EMF 92 problem

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ihmsa70
Levergunner
Posts: 6
Joined: Tue Dec 18, 2007 11:00 am

EMF 92 problem

Post by ihmsa70 »

My EMF 92 in .357 shoots mediocre groups with every load I've tried, and that is a bunch!
I slugged the barrel today. There is a constriction where the rear sight dove-tail is. The slug measured .350 and .355. (lands & grooves)
Any suggestions?
Clyde
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Chuck 100 yd
Advanced Levergunner
Posts: 6972
Joined: Tue Apr 03, 2007 8:52 pm
Location: Ridgefield WA. USA

Post by Chuck 100 yd »

If new,send it back. If used and no warranty, I would lap it. Some folks fire lap but I hand lap if it is needed. A little harder to do but you have much better control of the results.
I cast a lap on a rod and use progressively finer laping compounds (available from Midway/Brownells) until constriction is gone. You may have to cast 2-3 laps as they loosen up in the bore. By laping from the breech end you can stay away from the muzzle and lap in a choke that will improve accuracy . :wink:
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Tycer
Advanced Levergunner
Posts: 7705
Joined: Sun Sep 02, 2007 10:17 am
Location: Asheville, NC

Post by Tycer »

If it's new, send it back for repair.

If it's not, lap it. I would fire lap and hand lap.

http://yarchive.net/gun/barrel/lapping.html

http://findarticles.com/p/articles/mi_m ... i_76558930
Kind regards,
Tycer
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