Question about a case and seating problems

[martinbr]

Hello, I have a dillon 550b that was passed on down from my brother and I have been reloading .45acp with it currently. But I ran across this case when cleaning my brass and I can't make what origin this case came from. It fits into my .45acp dies really tight. So I am not going to use them. It looks like it's made out of a combination of nickel and brass or something. I found quite a few of these at the range, so I guess it's kind of a common case. I am also am having some seating problems with some cases. I have to press down fairly hard to get them to seat properly. The press is clean, so I don't know what else it could be except that maybe I should get a primer pocket cleaning tool to clean the pockets before I load? Any suggestions or tips would be greatly appreciated....
thanks,
martinb3152

[Jim Watson]

TW = Twin Cities army ordnance plant.
5 6 = 1956
I think that if you found a number of them at the range, somebody was shooting an old box of surplus ammunition.

The primer is crimped in and the crimp should be removed by reaming or swaging before repriming, "cleaning" is not enough.
Or you could just discard or give them away unless "quite a few" means hundreds.

[martinbr]

TW = Twin Cities army ordnance plant.
5 6 = 1956
I think that if you found a number of them at the range, somebody was shooting an old box of surplus ammunition.

The primer is crimped in and the crimp should be removed by reaming or swaging before repriming, "cleaning" is not enough.
Or you could just discard or give them away unless "quite a few" means hundreds.

Thanks for this info. I am just going to chuck them. There not that many. Plus, I don't have any experience in decrimping primers.
martinbr

[noylj]

Jim Watson:
+1

Martinbr: don't even have to know the plant, the headstamp, with the two digit date, just screams military and military just screams crimped primer. You can see the crimp rings around the primer.