Re: {Bullseye L List} Digest for bullseye-l-list@googlegroups.com - 1 update in 1 topic

[John Englehart]

Does your hammer spring feel weak ?

On Monday, May 31, 2021, 09:01:42 AM EDT, bullsey...@googlegroups.com <bullsey...@googlegroups.com> wrote:

bullsey...@googlegroups.com

Google Groups

Topic digest
View all topics

• KART .22 Conversion - 1 Update

KART .22 Conversion

John Hash <jlh...@aol.com>: May 30 12:02PM -0700 For many years, my Kart Conversion worked perfectly, but about ten years ago, it developed problems. Feeding was the foremost problem, followed closely by light firing pin strikes. I finally changed to Kimber magazines which cured the feeding problems, it seemed. I tried Jagemann magazines for the hold back feature, and they seemed fine, too. However the light firing pin hits persisted. The barrel is a Marlin, like the other early Karts. I thought it was a change in the ammunition. Fred designed his conversions to shoot Remington standard velocity ammunition, but in the ensuing years, most switched to CCI SV. I became suspicious that the problem was caused by insufficient closure, too. I noticed a small peened area on the firing pin cover, so I filed off some metal there, creating a slant on the rear surface of the cover, hoping this would provide a more direct hammer strike on the firing pin. We also rechambered the barrel with a standard .22LR Clymer reamer. We ground a small chamfer on the loading ramp where it meets the lower lip of the chamber. The light hits continued. The Kart firing pin is a Colt Ace pin, or close copy, I understand, and the critical measurement is from the shoulder to the tip. My FP protrudes a bit farther than the chamber depth in the slide. U nlike the High Standard and S&W 41 which have a near contact type of firing pin, it is the inertial type like the 1911. Now that Johnny Dworak is gone, God rest his soul, I have no source of firing pins. I want to try a firing pin set up like the HS and Smith. Does anyone know if an AR-15 firing pin is longer than the Kart firing pin? It looks very similar. By the way, my usual practice was to shoot the slow fire dry, but add oil after brushing for the timed and rapid fire courses. Rubbing the ammunition for the 900 with oil seems like a good idea, too. Until I get the Kart working reliably, I am shooting an HS 107 with an LSP aluminum sleeved barrel and a 30mm UD. Your advice would be appreciated. Thanks.   John Hash jlh...@aol.com

Back to top

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to bullseye-l-li...@googlegroups.com.

[John Englehart]

Firing pin should not be able to hit chamber face.