Weird jam

[GoldenVolt]

svandamme,

Here's a good test when working up a new load or using a new bullet.

Remove barrel from slide, drop new round in chamber.

The round should be flush with the end of the barrel and should make a nice ping sound.

If it makes a thud, and the head (back of round) of the bullet isn't flush with the barrel, the bullet could be hitting the lands (rifling) of the barrel.

There are a couple things to look at.

1) case length. 2) Over all length. 3) undersized chamber 4) bad bullet profile.

Hope you get it worked out.

Greg

[svandamme]

Greg, i do check those things, not all of them but i random pick a few out of every batch i make. And i sort my brass in batches per times loaded.
So all my bras should have had the same service life throughout the batch.

That being said , once i had it the first time, the same failure also occurs with factory ammo. I'm not sure if the reload is the cause of it, it's just that i usually shoot reloads...
The factory rounds i would think those are in fact correctly sized, so it's not clear at this time, if the issue could happen if i just shoot a box of factory ammo..
I'll also give that a try next time, got me a 1000 rd box of mag tech on the way anyway for my strategic reserve

[svandamme]

and as for consistency of the loads..

This was @ 25 meters , did not take to much time for it :



(i did rested my hands on the bench for that, no, i'm not zorry )

[wxl]

Dave's points are good but seems to be more a cartridge dimension or gun issue than powder as slide is not always going into battery. And if it happens with factory loads, then it seems more gun related. If chamber is clean, is it possible chamber is on the minimum spec length? I have a Razorback that does that and I have to reload on the shorter OAL than my other 8 10mm handguns (still hangs up on unfired round once in a while). Extractor needs tuning? Rounds hanging up on slide release when feeding from mag (should not make slide hard to pull back tho)? Different mag might help feeding (again fact slide is hard to pull back is a key symptom that does not fit mag issue)? Once round is fed and in battery and slide issue is a major point. Not sure I have helped any.

I have used dozens of different powders including AA7 with no significant issues. Actually most of Hodgdon's powders are made by ADI in Australia.