I am no expert but I am with Grandpamac and spudattack and others on this. Logically if the bolt lift is easy but the case is stuck, there has to be a problem with primary extraction.
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I am no expert but I am with Grandpamac and spudattack and others on this. Logically if the bolt lift is easy but the case is stuck, there has to be a problem with primary extraction.
If it is a primary extraction problem wouldn't it do it with all brass after firing, that is not the case with this rifle . On his first outing to the range he didn't have any issues but the next time he struck this problem but not with all the rounds he fired on the second day.
Does Primary extraction just suddenly occur or is a problem that is there from new, like in this case started off fine then went to pieces with some brass and not others.
Greetings Mooseman,Quote:
Originally Posted by Mooseman
It can just be a loose extractor and will vary with the pressure of the loads. For whatever reason the bolt lift is not doing its job of starting the case out of the chamber using the mechanical advantage from the bolt handle. Cases may stick as they are fired more or with higher pressure. I think you said that the loads were near max. With a tight chamber and close barrel tolerances pressure will be higher and may be borderline hot. It all adds up.
Regards Grandpamac.
It will be a contributing factor. Likely a combination of poor primary extraction, possibly dirty chamber, oversize brass/undersize chamber, hot loads. It will be at least two of those problems with the major being primary extractionQuote:
Originally Posted by Mooseman
No all cases are wiped down, he has a tumbler also so his brass is kept clean.Quote:
Originally Posted by T.FOYE
Inspect the brass that gets stuck for any scratches or gouges on it.
It could be a burr in the chamber creating a mechanical lock with the brass once fired.
It might do it with some loads more than others due to reasons including pressure of a given load, or the brass softness of a given load etc.
Problem solved, used brand new and once fired brass and there was no problems at all. I guess my old brass has sent it’s last sending. Lol
Great stuff.
Ah Deereman you beat me to it, a big thanks to everyone who suggested possible problems and as my son said it was an easy fix using new brass.
He sent me some pic's so here they are
The rifle in question CA 300 Rum carbon fiber rap barrel with a vx 6 on top.Attachment 164397
New load he is going to settle on 88 grs IMR 7828 and the 190 gr LRAB
Attachment 164398 that's 3 shots at .6 inch
Needless to say he can't wait for hunting season to start so he can get out and put some holes in something more than paper, he is very please with the rifle by all accounts.
He also tried his Tikka 243 that the boys use and it shot very well to, gotta love those Tikka's ( 3 shot Attachment 164408group)
Glad it’s worked out, however I do think it will rear its head again and the primary extraction issue will need to be addressed.
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