10-22 Won't Fire With Ruger 25rd Magazine

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oscar

Bearcat
Joined
Mar 4, 2001
Messages
65
Location
Illinois
Took the rifle to the range today and it would not fire with the Ruger 25 rd mag. The rounds would chamber and there would be a mark on the rim from the firing pin, but the round would not fire. I then tried the rounds in a Butler Creek and they fired. It seems to me that the Ruger magazine was slowing the bolt and the round was not fully seating. Kind of like a high primer. Does this make sense?
 

Mobuck

Hawkeye
Joined
Dec 25, 2007
Messages
7,538
Location
missouri
Could be the drag of the top round on the bolt is causing a failure to go completely closed. Did you try the mag with just a few(2-5) rounds in it?
 

FiremanBob

Bearcat
Joined
Sep 25, 2012
Messages
43
Location
VA
A little polishing of the inside of the feed lips with 400-grit wet sandpaper might cure the problem.
 

Mobuck

Hawkeye
Joined
Dec 25, 2007
Messages
7,538
Location
missouri
If you can find the patience(being a little sarcastic here) to give the mag a chance to break in by loading 10 or less rounds for 100 shots or so, I'll bet the mag works fine from then on.
 

Precision32

Blackhawk
Joined
Jan 11, 2011
Messages
629
Location
Ocala, FL
Check your firing pin protrusion. I have found the firing pins are too short in almost every 10-22 I've worked on. If you set the bolt with the rim cut up on your worktop, the firing pin will push up to it's maximum positive protrusion. The firing pin should extend 0.025" beyond the bottom of the rim cut. I shoot for 0.030" when I tune one up.
 
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