Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Gunsmithing


Reply

Off center primer strikes

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-22-2011, 09:53 PM
Silver Member
 
Join Date: Nov 2010
Location: NO. MISSOURI
Posts: 114
Off center primer strikes

I have a winchester model 70 that i purchased new about 10 years ago that has always struck the primers off center. My question is can this be corrected, and should i even bother with trying to fix it, as i have never had a misfire with it. Mainly it just bothers me that this rifle that i will never part with has this "flaw". What are some suggestions, and could someone point me in the direction of a good gunsmith that could take care of it .
Reply With Quote
  #2  
Old 07-22-2011, 11:33 PM
Platinum Member
 
Join Date: Jul 2004
Location: Texas
Posts: 5,421
Re: Off center primer strikes

Quote:
Originally Posted by SOUTHPAWSHOOTER10 View Post
I have a winchester model 70 that i purchased new about 10 years ago that has always struck the primers off center. My question is can this be corrected, and should i even bother with trying to fix it, as i have never had a misfire with it. Mainly it just bothers me that this rifle that i will never part with has this "flaw". What are some suggestions, and could someone point me in the direction of a good gunsmith that could take care of it .
Most of the time the reason for this problem is a bolt face that is too large allowing the case to set
of center. The bolt is machined and the firing pin hole is/should be, centered as well.

The other thing it could be is the extractor not holding it correctly unless the firing pin hole is
much larger than the firing pin.

Ether way it is hard to fix without a new bolt and/or a new extractor.

Try a fired case without resizing it with a primer only and see if it still hit it off center.if the
chamber is large it will allow the round to set off center if they have been full length sized
so the fire formed case should do better.

Just a few possibilities

J E CUSTOM
__________________
"PRESS ON"
Reply With Quote
  #3  
Old 07-23-2011, 02:12 PM
Silver Member
 
Join Date: Nov 2010
Location: NO. MISSOURI
Posts: 114
Re: Off center primer strikes

Thanks je custom,

the firing pin hole is visibly off center as was the scope mount holes on the receiver, i had sent this rifle back to winchester to correct these problems. They did correct the scope mount holes with what i believe was a new receiver but they did not address the bolt issue whatsoever. I have neck sized only on some of the cases just to see if there was any real accuracy benefit, and there was some but the primer strikes are still off center. I probably am just being nitpicky about this and just wanted to see what other people had to say on the subject.
Reply With Quote
  #4  
Old 07-25-2011, 05:32 PM
Gold Member
 
Join Date: Jul 2011
Location: Near Napoleon,MI
Posts: 997
Re: Off center primer strikes

If you were to see the primer strikes on my savage 24 combination rifle, you would probably snort your coffee / adult beverage.... The strikes are light and about 1/3 the way across the diameter... But it is pretty reliable. I had lots of misfires until I replaced the firing pin with a new one, not a single misfire since, but certainly not the best design.

Now wait until I tell you about the breech locking mechanism on that gun... About the 3rd or 4th trip out to the range with the gun I found that the breech would unlock from the recoil of firing. It scared the crap out of me. So I stopped shooting it until I figured out what was wrong with the thing. Well, finally after a complete disassembly, I discover that the breech locking pin (which has a triangular/wedge shaped point) was just barely engaging the notch on the receiver (hardly more than 0.030"). So I filed and filed and filed (it was pretty tough, definitely heat treated, but only about 30-35Rc). After getting no-where, I had to be more drastic and went to the belt sander. it took several rounds on the belt sander to increase engagement until finally it was back to filing and then stoning.

In the end I got it to work nice, but have to wonder if I would have killed myself if I had loaded a 20ga magnum shell in the lower barrel. For a discontinued gun, it appeared not to have been fired much and wonder if the first owner had a similar experience after which it became a safe queen ????
Reply With Quote
  #5  
Old 07-25-2011, 09:27 PM
Silver Member
 
Join Date: Nov 2010
Location: NO. MISSOURI
Posts: 114
Re: Off center primer strikes

Lucky that you knew something was amiss with that combo gun, i had a browning gti try to do that to me but i honestly can't tell you how many thousand rounds had been fired through it. A trip to the gunsmith fixed her right up and now she's ready for another hundred thousand rounds.
Reply With Quote
  #6  
Old 08-01-2011, 01:58 AM
Silver Member
 
Join Date: Dec 2004
Location: Southern Oregon
Posts: 201
Re: Off center primer strikes

Gre Tan rifles in Rifle, Colorado can probably fix it for you. I had him do a few of my Remington with his bushing modification to the bolt face and firing pen. My reason was they were cratering primers from the firing pin hole being oversized. Pretty sure he can fix your off center strikes.
__________________
"Beware of the man with only one rifle"
Reply With Quote
  #7  
Old 08-01-2011, 09:33 PM
Silver Member
 
Join Date: Nov 2010
Location: NO. MISSOURI
Posts: 114
Re: Off center primer strikes

Thanks for the info, i'll contact them to see what they say.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Off center primer strikes
Thread Thread Starter Forum Replies Last Post
Kimber 84 light primer strikes elkhunt58 Equipment Discussions 0 05-28-2011 03:53 PM
FS: RCBS Automatic Bench Primer & Auto primer nad1967 Reloading Equipment and Components 1 12-08-2009 08:50 PM
Need some help-Light primer strikes Shaidon Rifles, Bullets, Barrels and Ballistics 3 08-11-2009 03:43 PM
UPS strikes again specweldtom General Discussion 18 02-21-2009 05:20 PM
RCBS Bench mounted Primer (Strips) and Primer Strip Loader. Roll-Yur-Own Guns For Sale 3 03-13-2007 04:35 PM

Current Poll
Do You Think Slingshots Should Be Legalized For Hunting Brown Bear?
Yes - 47.26%
913 Votes
No - 52.74%
1,019 Vote
Total Votes: 1,932
You may not vote on this poll.

All times are GMT -5. The time now is 05:25 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC