Bad Day at the Range

[Lapua40X]

Well, I thought I measured the load twice; apparently not. Or, perhaps that bullet got seated deeper than the rest. At least the shot was waaaay off center and pierced primer tells a tale about high pressures for that round. No way to know for sure now why it happened. :'(
Anyhow, since that round went down range the rifle got belligerent. It's another Remington 40X. On closing the bolt the cocking piece will sometimes set but, about half the time, it simply follows the bolt with stopping at the sear. Trigger functions as it should (when the bolt does finally stop in the cocked position) and the cocking piece appears to be OK (I even exchanged firing pin assemblies - no change in performance) so now I'm wondering where to look next. Bolt opens and closes normally.
Got any ideas?

 

[boltfluter]

Did you find the little piece of primer that usually is missing from the back of the case.? I would start by flushing the trigger with some lighter fluid to get any brass shavings that may have been blown into it out. Hope that helps. Let us know.

Regards,
Paul

www.boltfluting.com

 

[DennisH]

pierced primer tells a tale about high pressures for that round

Definitely disassemble your bolt and clean it thoroughly. Non cocking bolt tells the truth. Just one blown primer will put a lot of crud in your blot assembly. I am speaking from experience. Use a pick to make sure you don't leave anything inside the bolt. Flush thoroughly.

Good Luck, minor bump, but you should be ok.

Dennis

 

[fdshuster]

Another speaking from experience. If you blew a primer, (ruptured with a hole in it), you must clean the trigger.

One tuned (Neil Jones) Remington trigger was O.K., after flushing heavily with lighter fluid, but that was with one blown primer only. Another that had 2 or 3 blown primers resulted in a complete rebuild, at a cost of $70.

Lesson learned for me? Stop firing and fix the problem, with the first blown primer. Continue to fire additional shots will result in internal damage to the trigger.

 

[shooter63]

i had a stmilar experience with a 700 action& jewell trigger these were fireforming loads for 6mmbrx using 205 fed match primers broke the sear in not 1 but 2 jewell triggers so after getting them fixed i had gre tan to bush bolt face& switched to 450 cci mag not any more problems but ive used 205 primers in same 6mmbrx with bat action with no ill effects so this may or may not help to be certain i would definately clean the trigger& bolt out as described above regards shooter63