Frank Sleeping

More reloading questions for the group

What would you consider to be an acceptable range as far as the deviation +- in FPS for your various loads (which were produced to be identical)? Is there some window which is commonly thought to be "consistent?" enough? Reason I ask is because I've struggled in some respect and have found that even when I have a small run of ammo, all produced the same with all the same components and to the same spec, I get the feeling that the deviation that I'm getting on the Chronograph is too wide and they should be closer together in velocity. I only use an electronic scale to produce charges which are either .1 or .2 under my target weight, then I move the charge over to a beam scale to trickle the last little bit in. Beam scale is frequently checked for zero and its pretty solid. I've also seen this behavior with brand new Hornady brass (sized and cleaned of course before loading) paired up with good quality points like Sierra MK or Bergers and good powders IMR, Hogdon, Alliant.

Thoughts?
What velocity window do you like to see a given batch of reloads stay in?

Thank You.
Think

Walking Away

It is really hard to walk away | An NC Gun Blog -- [Do you have any idea how hard it is to walk away from a 2 day gun class that you’ve paid for? It’s easy to tell people that if the instructor is unsafe, pick up your stuff and walk away. It’s a whole lot harder to do it. On Saturday, I had to do it, and without my brother there I’m not sure if I could have.]

ETA: The article is now password-protected, unfortunately -- legal reasons, perhaps? -- but it was linked and read pretty widely as of last night. bayourenman linked to/discussed it here.

Community question

What's with the comments with links in them being marked as spam all of a sudden? It wasn't doing it to me before, but now it is. It says it's a "community setting" - is anyone moderator-y enough to be able to fix that?
rock

the revolvers of willi korth

Willi Korth was born in Stargard / Pommern on 11 July 1913. He learned machining and toolmaking at the Deutsche Reichsbahn between 1930 and 1934. Ten years later, in the summer of 1944, he briefly worked at Mauser-Werke under contract as an independent designer of military small arms. In August of 1950 Korth moved to Ratzeburg. Next year he found a job as a manager at the Hubertus Metallwerke in Mölln. In 1952 Korth resigned to pursue his own designs. His first effort was a blank firing gas revolver. The few gas revolvers, designed and manufactured by Korth in the winter of 1954/55, are now sought after as collector’s items.
    On 1 October 1955, following the expiration of the postwar ban on German manufacture of firearms, Korth founded a company in Ratzeburg under the name of Willi Korth, Waffenfabrikation. In September of 1955 Korth exercised his first manufacturing license for firearms. In 1962 he designed and manufactured his first revolver, initially chambered in .32 S&W Long, the highest caliber allowed by the terms of his license. Instead of a traditional cylinder release on the left hand side of the frame, the cylinders of these revolvers were unlatched from the frame by pulling forward the head of the ejector rod. The crane lock was released by the leftward push of a button located on the right hand side of the frame under the cylinder, whereupon the entire crane assembly complete with the cylinder would slide forward for removal from the frame.
    The first series production of Korth revolvers began in 1964 with the police revolver chambered in .38 Special, serial numbered 20xxx. In 1965, Korth introduced 4" and 6" barreled six-shot revolvers in .22LR and .22 Magnum, and five-shot models in .357 Magnum, serial numbered in the 21xxx series. The subsequent 22xxx/23xxx series appeared in 1967, comprising a small run of 6" revolvers in .357 Magnum and .38 Special, as well as .22LR, plus a few 4" .357 Magnums. Its new feature was a torsion trigger spring mounted on a stud accessible on the left-hand side of the frame, and fixed with a set screw on its right hand side. This arrangement allowed an easy adjustment of the trigger pull weight between 1kg (35.274 ozs) and 2.5kg (88.185 ozs) without disassembling the revolver.
    The 24xxx series, introduced in 1969, featured another innovation in the trigger action, designed for a precise and tunable stacking transition in double action, achieved through the use of variously sized rollers on the trigger impinging upon the double action sear on the hammer. Thenceforth every revolver was shipped with five numbered metal wheels of different diameters that ranged from No.1 (0.283") for the hardest stacking transition to No.5 (0.293"), for no stacking at all. Korth also added the second cylinder lock, achieved by latching the head of the axially fixed ejector rod inside a lug located under the barrel. Because the head of the ejector rod was no longer accessible for manipulation with the cylinder latched, Korth added a pivoting lever at the right side of the hammer to cause the cylinder release. The floating firing pin with its spring was retained in the frame by a transverse pin. Finally, the exposed coil mainspring gave way to the definitive sleeved telescopic design inspired by the MP38 recoil spring.
    The production of the second, Combat revolver variant started in 1973, with the first 15 specimens numbered in the 27xxx and continuing in the 28xxx series. They upped the centerfire cylinder capacity from five to six rounds and featured a rounded grip frame, a ramp front sight combined with a low mounted rear sight. Most significantly, they initiated the transition from the one-piece barrel topped with a ventilated rib and fitted with a short locking underlug, reminiscent of Dean W. King’s patented 1936 custom conversions of S&W revolvers, to a two-piece assembly comprising a tensioned barrel surrounded by a shroud topped with a ventilated rib and fitted with a full-length underlug, in an arrangement that referenced Colt’s 1955 Python externally, while replicating Karl R. Lewispatented 1967 design originally realized by Dan Wesson. Throughout their production, Combat barrels varied in length between 77mm and 82mm, nominally designated as 3". Meanwhile, the Sport revolvers retained their one-piece barrel fitting, with both five- and six-shot cylinders available through the 28xxx series.
    In the series 29xxx begun in 1974, Korth co-branded his revolvers with Dynamit Nobel serving as a distribution partner. All revolvers in this series were fitted with six-shot cylinders. The 30xxx series completed the transition to the two-piece barrel construction and introduced the optional 102mm or 4" Combat barrel configuration. Finally, the 32xxx series introduced the definitive, semi-slabsided profile of the barrel shroud. All these features remained unchanged in the 1980 33xxx series, which for the first time added the 6" Combat configuration. Meanwhile, beginning in 1978, Willi Korth had refocused his design work on a new autopistol, considering the action of his revolvers fully perfected. From the first five prototypes in 1982, the production of the first series did not start until 1989. The pistol never succeeded commercially, owing to lack of development and the initial price of $6,750.00.


Korth revolver parts:
1. Frame
2. Barrel assembly
2.1 Barrel
2.2 Barrel shroud
2.3 Front sight •
2.4 Front sight retaining pin
2.5 Front sight Target Model •
2.6 Front sight retaining screw
2.7 Barrel shroud screw
3. Sideplate
4. Cylinder
5. Extractor
5.1 Extractor spring for rimless cartridges
6. Crane
7. Extractor axle
8. Cylinder retaining pin
9. Spring guide rod
10. Return spring for extractor
11. Extractor axle head
12. Spacer bushing
13. Cocking spring
14. Extractor axle guide bushing
15. Circlip for cylinder mount
16. Plunger for cylinder stop
17. Compression spring for cylinder stop
18. Retaining screw for #16 and #17
19. Crane locking piece
20. Compression spring for #19
21. Retaining nut for #9
22. Locking screw for trigger spring stud
23. Trigger spring stud
24. Trigger spring pawl
25. Trigger torsion spring
26. Trigger
27. Cylinder stop bolt
28. Pin for cylinder stop
29. Cylinder hand
30. Double action roller •
31. Guide pin for the hand and double action roller
32. V spring for the hand
33. Hammer cocking cam
34. Retaining pin for #33
35. Hammer complete with axle
36. Double action sear
37. Compression spring for #36
38. Retaining pin for #36
39. Pin for #40
40. Hammer strut
41. Bushing for hammer spring
42. Mainspring •
43. Mainspring guide housing
44. Cylinder release lever
45. Cylinder release lever plunger
46. Spring for #45
47. Firing pin
48. Firing pin return spring
49. Firing pin retainer pin
50. Rear sight tang for Model Sport
51. Rear sight blade for Model Sport
51.1 Rear sight blade for Model Combat
51.2 Adjustable sight blade for Model Combat
51.3 Retainer for elevation for Model Combat
51.4 Rear sight with blade for Model Target
51.5 Rear sight blades for Model Target •
51.6 Locking screw for sight blades
52. Elevation screw for Model Sport
52.1 Elevation screw for Model Combat
52.2 Elevation screw for Model Target
53. Compression spring for elevation
54. Steel ball for elevation
55. Snap ring for elevation screw
56. Windage adjusting screw for Model Sport
56.1 Windage adjusting screw for Model Combat
56.2 Windage adjusting screw for Model Target
57. Windage screw retaining pin for Model Sport
57.1 Windage screw retaining pin for Model Target
58. Leaf spring for rear sight
59. Cylinder locking plunger with retaining spring pin
60. Compression spring for cylinder locking bolt
61. Locking bolt for cylinder lock
62. Retaining pin with compression spring for #61
63. Trigger pivot screw
64. Sideplate screw
64.1 Fitted pin for side-plate
65. Lower retaining pin for grips
65.1 Single retaining pin for Match grip
65.2 Upper retaining pin for grips
66. Trigger stop screw
67. Grips
68. Grip screws (pair)
69. Grip screw bushings (pair)
70. Stop pin for hand lever spring

• Variable dimensions.

    Willi Korth’s revolvers were benchmade by five gunsmiths at the rate averaging about 120 pieces a year. In contrast to the mass production standards, Korth revolver parts were neither cast nor milled. They were ground in the course of hard fitting from steel forgings that boasted a tensile strength of 1,700 psi. Each revolver required 70 man-hours that comprised 600 distinct operations. Their major components were surface hardened up to 60 HRC on the Rockwell hardness scale. The original production of Korth revolvers ended in 1981 with the serial number series 33xxx, adding up to a total of 7141 revolvers in caliber .38 Special, .357 Magnum, .22LR, and .22 Magnum, with barrel lengths ranging from 3" to 6", fitted with 6-shot rimfire and both 5- and 6-shot centerfire cylinders. The three main variants were the Combat, the Sport, and the Target models, some of which were finished as engraved luxury pieces.

    Korth turned over his business with all inventory, tools, and drawings to count Nikolas von Bernstorff on 30 June 1981. The company continued as Korth GmbH & Co. KG, its payroll peaking at 30 employees during the following decade. Its initial production comprised the 1982 transitional series 34xxx and 35xxx, still made under their inventor’s personal supervision. Following Korth’s resignation due to failing health in 1983, his successors produced the 36xxx, 37xxx, and 38xxx carbon steel series, mostly from the legacy parts fabricated and blanks forged by Willi Korth. They also introduced the Fxxx matte-finished Profi series priced 25% below its luxurious siblings and added the optional 5¼" barrel configuration and .32 S&W Long chambering. Additionally, in 1985 there appeared the short-lived Sxxx matte stainless steel series, highly sought after by collectors today. Starting with the 36xxx series in 1986, the top strap of the Korth frame was made about 0.5mm thicker, adding around 9 grams to its weight. Additionally, the crane was modified with a new cylinder bushing, which eliminated the gas check relief cut of the original centerfire revolver design. These modifications strengthened the revolver and improved its cylinder support, at the cost of accelerating the erosion of the forcing cone.




1985 Korth 4" Profi Sport


    Willi Korth died on 10 October 1992, leaving the development of his autopistol unfinished, with its production by his successors falling short of the inventor’s design goals in accuracy and reliability alike. In mid-1999 Korth GmbH underwent bankruptcy following a long production slump. Its assets were taken over in April 2000 by the Armurerie Freylinger of Luxembourg. Over the following years, five gunmakers employed by Freylinger produced the 39xxx and 40xxx series, briefly expanding into the American market by establishing a subsidiary in the United States in 2001 in a joint venture with Earl Sheehan, an independent importer of Walther firearms. In 2001, they introduced the finish option of plasma TiAlN PVD surface coating in satin and matte styles, which boasted exceptional abrasion resistance. Since 2002, Korth revolver aficionados benefited from their comprehensive historical and technical analysis by Veit Morgenroth, arguably the most detailed investigation of a sporting firearm ever to be published. Regrettably, this treatise neglected the contributions of Korth’s successors, which included the Triple Lock, the externally tensioned mainspring, and switch-barrel configurations developed by Freylinger.
    In November 2008 the original Korth factory in Ratzeburg clodsed its doors. But six months later, on 22 April 2009, Andreas Weber and Martin Rothmann revived the Korth trademark in Lollar near Giessen. The new owners of Korth exhibited their 41xxx revolver series and autopistol prototypes in 2012 and 2013, both at IWA in Nürnberg and the SHOT Show in Las Vegas. In the sequel, I shall examine some representative Combat and Sport revolvers manufactured by Willi Korth and his successors.

Crossposted to [info]larvatus and [info]guns.

Compact .45?

I have a full sized 1911, which is a pain to carry in an IWB holster, even in a SuperTuck Deluxe (when I sit, the muzzle hits the chair, and the beavertail jabs me in the ribs).

My original thought was just buy a smaller 1911, but based on this post, I'm considering being open to more options.

The Springfield XDs is an attractive option. I fondled it and it's nice, and it's half the price of the 1911. Even if you figure on getting another SuperTuck to hold it, it's still a solid $500 under. ($400 if you buy some spare mags).

Anyone have any particularly interesting thoughts?

I'm really hesitant to change caliber, since .45ACP is the only autopistol caliber for which I currently reload (I also do .38 Spl, .357 Mag and .45 Colt), and that would mean I'd need to spend another few hundred dollars on new dies, appropriate powders, bullets, etc. for some different caliber.

Edit: After puttering a bit last night, I might have fixed a Taurus PT145 that I had in the back of my safe which I picked up some years ago and had never worked right. I chamfered the bottom of the (friggin huge) extractor, and all of a sudden, it would feed a full magazine without stoppages. More shooting is required, but this may end up being my compact carry piece, as I both already own it and that's the reason it was originally purchased. So, this question may be moot.

Enfield help

Gun= Enfield, 5 groove, chambered in 300 win mag, muzzle break, wood stock, aftermarket trigger set at a ridiculously light pull (thankfully its adjustable!). Has been seriously sporterised, does not look like an Enfield, at all.

Finally picked up a new scope (Vortex Viper) in prep for this years hunting. The rings I had do not fit the scope, pulled the ramps off to get new and that is where my issue is. Apparently there is an option as to style/type of Enfield and I have ZERO idea as to what I have got. My options for style are Remington30 and Winchester70. My google-fu has failed me as to what the difference is between the two and more importantly, how to tell what I have.

Pictures not available atm as it is taken apart on my buddys coffee table (Friday earliest for photos).
Thanks!
rock

best pistol ever?

Dick Metcalf waxes lyrical about the Colt Government Model 1911. I agree that the Colt 1911 is to autoloaders what the Colt Single Action Army is to revolvers: an obsolete design sustained by sentimental attachment of nostalgic fanboys. Here is why:
  1. Far from the “Best Pistol Ever”, the 1911 design is demonstrably inferior to its descendants. Locating the barrel with a bushing at the muzzle and a swinging link at the breech makes it easy to tune for accuracy or reliability but hard to standardize for drop-in spare part replacement and tricky to take apart and put back together. A 1911 built tight for accuracy will not shoot reliably until it has been broken in with thousands of hardball rounds, at which point it will have loosened up to become less accurate. The exterior of the 1911 bristles with hard edges and delicate notches. Its ergonomics are so poor that only collector editions are made without beavertail tangs, memory groove grip safeties, extended thumb safeties, and cut or arched mainspring housings. Its construction standards are so lax that three generations of gunsmiths have put their kids through college by charging fees for hand-fitting for accuracy and reliability tune-ups. Its lore is akin to that of Harley-Davidson Big Twin, the flagship product of the oldest surviving motorcycle manufacturer in the world, which putters around in grand style as long as the rider abstains from going too fast or turning too abruptly.
  2. “Its straightforward, user-friendly design cannot be outclassed for reliability, accuracy, endurance, and effectiveness.” Oh, really? In the late 1960s, the US Navy ran a test using an accurized softball competition 1911A1 pistol shooting Remington 185-grain .45 ACP jacketed wadcutter match ammo. At the outset the gun printed 20-shot 2.5" groups at 50 yards out of a machine rest. About every 5000 rounds, it was put back into the machine rest and retested. In each of these tests through 25,000 rounds, it still shot the same size groups. At 30,000 rounds, the groups had opened up to about 3.5"; at 35,000 rounds, the groups were about 4.5". For comparison purposes, numerous Swiss shooters report no degradation of factory-grade accuracy in a SIG P210 after firing 250,000 rounds. These milspec guns were tested on behalf of the Swiss Army to put 10 rounds into a 50mm circle at 50 meters, and did so consistently over five times the lifespan of a 1911. As Ken Hackathorn and Larry Vickers pointed out while explaining the supersession of the 1911 by the HK45, “at 50,000 rounds, a 1911 needs a severe overhaul. It’s going to need to be rebuilt and it’s going to have a lot of parts that are worn out.” Back in its heyday, that was a reasonable expectation of of a military sidearm’s lifespan. Thus Julian Hatcher described in the 1953 Gun Digest a 5,000 round endurance test administered by the U.S. Army around the end of WWII to a number of service autopistols. Only the Colt M1911A1 passed. The German P38 came in second with 10 malfunctions, one broken extractor, and 2 other parts replaced. Among the blowback pistols, including the Walther PP and PPK and the Mauser HSc, each had at least 36 malfunctions, with the PPK coming in the worst at 83. All of the blowback frames cracked before completing 5,000 rounds. The PP outlasted the rest, firing 4,142 rounds before cracking the frame. This was par for the course for pistols that could be expected not to fire more than 50 rounds in annual qualification, but totally inadequate for entrants in the modern offensive handgun weapon system, as evaluated by Hackathorn and Vickers. Put simply, Colt’s beloved relic fails to live up to the standards of accuracy, reliability, and ruggedness, maintained by modern service auto pistols.
  3. “How well can a Government Model 1911 pistol shoot? Generally, a top-of-the-line Colt-manufacture .45 Gold Cup new from the box can be reliably expected to deliver 2.5-inch, five-shot average groups at 25 meters from a rest. Give it to a top-grade pistol-smith for refinement and you’ll get a gun that will put match-grade loads into a 1-inch circle at that distance.” This is no tribute, but a reproof. The factory-accurized Colt Government Model National Match Gold Cup is far too tight to merit the accolades for reliability earned by its predecessors in military trials; all the more so once it has been “refined” by a top-grade pistol-smith. Four decades ago Colt tacitly acknowledged these shortcomings in their stillborn SSP design, which dispensed with the separate barrel bushing and barrel link of the 1911, taking its design cues from Charles Petter’s French M1935A and its successor, the Swiss P210. The one-piece slide differentially-bored to support the tilting barrel cuts in half the clearances required by the replaceable barrel bushing; the barrel cam that superseded Browning’s swinging link in the Radom ViS-35 and the FN GP35, as derived from the his own 1927 patent for the Grande Rendement prototype of the latter, enables drop-in barrel fit for a unit construction slide; the integral hammer action that can be removed and replaced without tools, as introduced in the Tokarev TT30, simplifies maintenance and allows for drop-in unit-level armorer repair of ignition malfunctions; and the Luger-patterned frame with its rails enveloping the slide makes for their far more consistent alignment. These design changes amount to genuine corrections of John Moses Browning’s venerable masterpiece. To maintain its ongoing supremacy over its successors is an insult to the intelligence of modern handgunners.
Crossposted to [info]larvatus and [info]guns.
rock

nanny statists, sore losers?

Charles Simic asseverates, without adducing a shred of evidence or articulating a scintilla of argument, that the chief mission of NRA and other gun lobbies is “to drum up business for the 1,200 gun makers in this country”. Let’s see how his claim holds up.

In 2012, according to an analysis by business research firm Hoovers, the gun and ammunition industry in the U.S. generated an estimated $6 billion in revenue. In comparison, Exxon Mobil alone generated $482 billion, with WalMart coming in at $469 billion. Outside of the oil and gas and retail industries, we find Apple at $156 billion, closely followed by General Motors, General Electric, and Berkshire Hathaway at $150, $147, and $144 billion. In the general scheme of things, the aggregate revenue of the U.S. gun industry would place it around relative pipsqueaks on the order of Hershey and Kodak.

If the strength of the gun lobby is owed to the industrial base of its suppliers, why don’t we hear about the politics of chocolate bars or film stock unfairly dominating American lunch counters and movie theaters? Could it be that NRA, in deriving nearly half of its revenues from individual membership dues, functions as a legitimate conduit of public interest, no less so than the Supreme Court of the United States, in affirming the individual right to keep and bear small arms that are commonly used for self-defense and appropriate for service in the militia, including Simic’s bugaboos, “not only hunting rifles but also military-style murder weapons and even hollow-point rounds that are banned in warfare”? Is it possible that Simic bemoans this publicly disclosed and thoroughly litigated state of affairs for want of journalistic integrity that begins with accounting for the financial data and studying the legal rulings of our court of last resort?

As witness Dan Baum interpreting the politics of guns in terms of “the power of the individual in relation to the collective, and the extent to which each of us needs to live by the permission of the rest”, an American liberal need not be a nanny statist. Likewise Seventh Circuit Judge Richard A. Posner, self-identified as a “pragmatic classical liberal”, who invalidated under the Second Amendment an Illinois law, the last in the land to forbid most people, though not politicians, from carrying a loaded gun in public. Simic’s demagogical legerdemain is far more plausibly attributable to intellectual dishonesty than political convictions.

Crossposted to [info]larvatus and [info]guns.