Wilderness Blacktail
Well-Known Member
Copy all that.
Does that primer feel like its backed out of the case at all? Almost looks like it could be.
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6.8 western from 7 SAUM brass
- Thread starter codyadams
- Start date
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Does that primer feel like its backed out of the case at all? Almost looks like it could be.
Dashizzle37
Member
It feels flush to the case. Doesn't seem to have backed out.
Wilderness Blacktail
Well-Known Member
And all the other primers looked like that? Like very mild.
Dashizzle37
Member
All primers look good. The other case i had an issue with that didn't fire, the primer looked expanded on one side and not the other. Deformed is the best way I can explain it. Unfortunately I didn't handle it long enough to get a picture.
Wilderness Blacktail
Well-Known Member
That is very odd. I think I would cull those primers.
I dont know that a primer could make a mild/normal load exhibit very high pressure like the case that died tho.
Dashizzle37
Member
I'll pull apart the other loads. Hopefully some new cci will and a lighter load fix the problem. Thanks for your help.
Wilderness Blacktail
Well-Known Member
I think I would create a specific post on this and see what comes from it. Something is going on here and Im not sure the primer could do it.
It would make sense if somehow a heavier bullet was used, much longer C.O.L and bullet was heavily jammed or the charge got increased heavily (dont think thats possible as I wouldnt think theres enough room)
It would make sense if somehow a heavier bullet was used, much longer C.O.L and bullet was heavily jammed or the charge got increased heavily (dont think thats possible as I wouldnt think theres enough room)
with a primer like that tells me your case was short and your bullet wasn't jammed. when sizing down your 7saum brass best to back your die out a 1/4-1/2 turn and only partial size the neck, a false shoulder is best option and will eliminate the case head separation. make sure your bullet is jammed tight into the lands. roughly .015- .020 into the lands not just touching the lands. you are not over pressure that primer backed out of case and slammed bolt face and when case expanded it forced the primer back into the case, common problem when cases are too short.
Dashizzle37
Member
I will give that a try. When I sized the cases I only did the neck but the whole neck. It will be easy to pull the bullets and reseat farther out. I will give it a try this weekend and post back on here how it went. Thank you for you help.
if possible pull bullets and expand necks to 30 cal. and then back down to 6.8 with the die backed off leaving a false shoulder, adjusting your die so the case has slight resistance when chambering and then load long with bullets touching lands. this is the best way to avoid any issues. if expanding up isn't possible just jam bullets as described earlier and you should still feel resistance when chambering a loaded round.
codyadams
Well-Known Member
This is what I would put my money on. The case was pushed forward during firing, possibly out of the extractor, or it was never in it, then it went off. The case wall expanded and gripped the chamber, then pressure slammed the primer against the bolt face, causing the flat primer. Then, the increasing pressure slammed the back portion of the case, that is stronger due to being thicker and didn't expand as much to grip the case wall, and this caused the case separation, and shoved the primer back in, creating more of a flattened look.
As stated, create a false shoulder on the cases, and jam the bullets into the lands for good measure to make sure that doesn't happen again. If they were jammed, it may have only happened to the one because the strike of the fireing pin may have pushed the bullet deeper in the neck, allowing the case to go forward, due to not enough neck tension.
You have put a lot of work into this and I was following your efforts. I actually called ADG to order some 7saum brass to try myself when ADG advised me they were releasing a trial production run of 6.8. They gave me a list of vendors that were receiving this brass and I was able to purchase from two of those vendors. I've got two hundred rds and not wanting to part with mine, but I can share those vendors with you if you want.
I'm loading 175 TGK in once fired Winchester brass and 165 Nosler Accubond LR in the ADG brass for my new X-bolt Hunter.
My results are not jiving with the load data I've found, curious what you and other's loading this cartridge are getting?
I'm loading 175 TGK in once fired Winchester brass and 165 Nosler Accubond LR in the ADG brass for my new X-bolt Hunter.
My results are not jiving with the load data I've found, curious what you and other's loading this cartridge are getting?
yes the SAUM case has to be fireformed into the 6.8 chamber and the smaller .200 line is a blessing, NO clickers and no special reamer like the PRC case where they order new reamers with an increased .200 line to eliminate the clickers
