K31 Help

[0321jarhead]

I have no problem with using my Lee dies with the PRVI and then taking those rounds out again on the match on the 17th.

[OpenSightsOnly]

You should full length size the PRVI brass for the K31 using K31 specific Hornady or Redding dies only.

Not entirely true . . .

A K31 not the only rifle out there that fires GP11 or 7.5 Swiss as we still have 96/11, 1911 Long Rifle, K11, and Stg. 57.

RCBS or Lee works fine. However, a brass that is FL sized from a Hornady or Redding die will not work in any of the mentioned-rifles.

[BLR81]

When I measured the chamber with the Hornady device I used a GP11 case that was made into a modified case to determine the seating depth.

The rounds all fed smoothly, even the ones that needed the cocking handle to be reset and no excess force was applied to the bolt to close it.

The bolt slides with very little resistance for feeding and ejecting. In looking at a few videos of how people close the bolt on the K31, I was doing it more gently than they were. I was closing it more like I do on my Enfield which has no resistance. Maybe that was causing it to not fully close and leave a small gap where the firing pin couldn't contact the primer. I need to take it out again soon to test that theory.

I will disassemble the bolt and wipe down the firing pin spring that I put a little oil on. Other than a little grease on the bolt cam follower the bolt was left alone and no other areas of the bolt assembly were oiled or greased.

I really like the rifle and it was fun to shoot so I want to get everything working properly.

I am using new Prvi brass for my handloads.

What about this comment from your original post?

"After waiting to see if there would be a hang fire I tried to pull the bolt back to eject the round but I couldn't get it out of battery."

If the bolt wasn't in battery and not fully closed, why couldn't you open the bolt?

It is possible to not have the charging handle fully engaged but you said that the numbers on the bolt were up. Then you cams on the sleeve where the numbers are printed, had to be engaged. Which means that there shouldn't have been any gap. But even if there was you should not have had any trouble ejecting the unfired case.

Good luck,

[Latigo]

If the case was badly oversized he could have easily jammed the neck.
TTL.... very important.

[Enfield47]

What about this comment from your original post?

"After waiting to see if there would be a hang fire I tried to pull the bolt back to eject the round but I couldn't get it out of battery."

If the bolt wasn't in battery and not fully closed, why couldn't you open the bolt?

It is possible to not have the charging handle fully engaged but you said that the numbers on the bolt were up. Then you cams on the sleeve where the numbers are printed, had to be engaged. Which means that there shouldn't have been any gap. But even if there was you should not have had any trouble ejecting the unfired case.

Good luck,

I'm a bit baffled by not being able to open the bolt too. All the brass was new Prvi that had been FL resized and trimmed so I don't think the brass would be the problem and the bullets were seated by measuring from the ogive.

I wish I had some dummy 7.5x55 rounds on hand I could test the function with. I'm hoping to get back out to the range in a week or two and I'll try again (hopefully with no further problems).

[0321jarhead]

I wish I had some dummy 7.5x55 rounds on hand I could test the function with. I'm hoping to get back out to the range in a week or two and I'll try again (hopefully with no further problems).

If you are reloading, make some.