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  #16  
Old 08-11-2018, 11:11 AM
ElrodCod
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I don't know what's causing it but if it was my gun I'd completly disassemble the bolt and give it and the chamber a thorough cleaning. Then I'd toss the magazine.
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  #17  
Old 08-11-2018, 11:25 AM
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Quote:
Originally Posted by CardPuncher View Post
As Rawhp points out, those rounds were probably were not even close to fully chambered and the FP didn't need to be extended. More likely the round was not straight and were discharged when the bolt hit the rim.
I agree with this. It's hard to tell if the nose of the OOB rounds are getting stuck in the mag, or if the shell rim is getting trapped at the bottom of the extractor. Either way, the rim is being held low and angled when the bolt smacks the top edge.

First, I'd try this fix for BX-25 mags:

https://www.rimfirecentral.com/forum...d.php?t=463407

That should raise the rim a few thousandths higher on the last round.

Next thing would be to check the bottom edge of the extractor. It should be slightly rounded to allow the rim to move up the bolt face easier. This is more important on rounds that are feeding up at a steeper angle (like the last round).



Lastly, have you tried hand cycling the last few rounds to see how the last round is feeding differently? It may point to something we haven't thought of yet.
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  #18  
Old 08-11-2018, 10:38 PM
ford8nr
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[QUOTE]By the looks of the brass, those rounds weren't even close to being in battery, and only barely chambered[QUOTE]

That is a correct assessment. After further investigation the rounds are actually jamming while chambering with some rounds having the rim edge pinched while still 1/2 in the mag. I figured this out sfter I had a couple jams on the last round without discharge.
Hand cycling them they all chamber fine.
Bullets did NOT leave the barrel. Got stuck just into the rifling.

Last edited by ford8nr; 08-11-2018 at 10:41 PM.
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  #19  
Old 08-12-2018, 12:22 PM
ford8nr
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Shot a match this morning and the gun ran fine with the 4 mags I used.
Did some trouble shooting afterward. Found there was 1 mag of 6 still having problems. When clearing a jam I noticed the mag follower was floppy when empty. Put one round in and the round was wiggly also. 2 rounds in and it was fine. Disassembled mag and I think the follower pin or spring bushing is just worn. The 22 casing over the pin seems to firm everything up. Ruger did replace 3 mags for me last year that were worn out causing jams in competition.

How fast someone asked ? 20rds / 4 distances (25 to 100yds) under 20 secs.
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  #20  
Old 08-12-2018, 12:25 PM
ford8nr
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Then I'd toss the magazine.
Mag gets tossed now.
Problem is I have 6 BX25 mags.
Had to number them to find the problem.
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  #21  
Old 08-13-2018, 11:38 PM
rawhp
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Quote:
Originally Posted by ford8nr View Post
Mag gets tossed now.
Problem is I have 6 BX25 mags.
Had to number them to find the problem.
Well, problem solved without any injuries. I'd call that a win.

That's pretty fast shooting, especially for those longer distances.
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  #22  
Old 08-14-2018, 04:28 AM
ford8nr
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That's pretty fast shooting, especially for those longer distances.
It's a timed silhouette shoot. 5 targets at each distance 25, 50, 75 and 100yds. Shot off of a bench. Fastest times don't make scope adjustments. Sight in for 1 distance, hold under / over as needed.
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  #23  
Old 08-27-2018, 10:11 AM
ford8nr
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Follow up ...
Got a follow up voice mail from Ruger on Friday asking how the gun / mags were running.
Shot two matches this weekend without problems.
Returned Rugers call thus morning and mentioned the one older mag that was giving me the problems. Pleasent CS lady said I'm sorry to hear that, let me check your contact info and get a new one in the mail to you.
Can't beat that and why I keep buying Rugers. I looked a Buckmarks briefly before I bought my Mk4 Target.

Last edited by ford8nr; 08-27-2018 at 10:21 AM.
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  #24  
Old 08-29-2018, 11:58 PM
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