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  #16  
Old 10-06-2019, 10:48 AM
243winxb
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Headspace- SAAMI tolerances .043" to .051"

Mine is .048"

Ammo rim thicknees on both brands are right at .043"

Headspace is not a problem.
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  #17  
Old 11-18-2019, 05:18 PM
bhound

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I got a titanium fireing pin from Tandemkross works fine
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  #18  
Old 11-30-2019, 05:30 PM
243winxb
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Brownells firing pin came in today. Its .007" longer. 1.876" Something to test in the spring.

On back order for about 2 month.

Last edited by 243winxb; 11-30-2019 at 05:33 PM.
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  #19  
Old 01-16-2020, 03:14 PM
243winxb
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Installed new Ruger firing pin from Brownells, along with recoil spring, firing pin stop, rebound spring support & spring.

Test fired with same lot of federal. Still have misfires & 2 new stove pipes.

Have been using Safariland Breakfree CLP since running out of the original.
Then i remembered 2 problems i had before with CLP. It acted like glue on my 2 Citori extractors. My S&W cylinder turned hard on a new 38, M337PD. CLP made it worse.

Both problems were solved by applying WD 40. I used WD40 in the shop on sticky guns before.

So, i spray the MK 1 WITH WD40. .Work the action & letting it soak. Fired 90 rounds of the Federal over 3 different trips to the range. No problems, gun works perfect.

The last trip today i also fired 40 rounds of CCI Standard Velocity. No misfires. But 1 failure to pick a round out of the magazine & 1 fired case stayed on the bolt face & went back into the chamber. This is a sign of light recoil not pushing the bolt back fully.

The housing that contains the main spring may be worn or its gummed up with dry CLP? In my experence the springs are extra strong. So i feel its not a weak mainspring.

So if your auto loader is not running right, try a degreaser or penetrating oils. I use WD 40.

The winter freeze is back. Waiting for spring now.
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