1911 guy
Member
O.K., here's the skinny. I've got a sweet .308 load that I've been using for a while. 44 grains of Varget over a CCI primer in a milsurp case topped by a Speer 150 grain JSP. Shoots like a champ in my Savage.
Now the problem. I'm going to be out of milsurp brass after a few more reloading cycles. I can get new Winchester brass close to home, but this same load shoots lousy in a Win. case. I'm going with the thought that the slightly thicker brass is giving me a little more pressure and tightening up the groups.
Two solutions I'm thinking of.
One, try bumping up the charge a bit at a time. Pro: Same OAL (2.8 in) Con: More powder used and a lot of monkeying around to get the new measure right.
Two, seat the bullet a few thousandths deeper and try to get the "magic" pressure that way. Pro: Same recipe, slightly different length. Con: This is the biggie. All my manuals say 2.8 is the MIN OAL for this powder. The big question is since I'm not pushing max load (47gr) can I seat 10 or 20 thou more and keep it below unsafe limits?
I know someone out there has a better handle on this than me and I appreciate any responses.
Now the problem. I'm going to be out of milsurp brass after a few more reloading cycles. I can get new Winchester brass close to home, but this same load shoots lousy in a Win. case. I'm going with the thought that the slightly thicker brass is giving me a little more pressure and tightening up the groups.
Two solutions I'm thinking of.
One, try bumping up the charge a bit at a time. Pro: Same OAL (2.8 in) Con: More powder used and a lot of monkeying around to get the new measure right.
Two, seat the bullet a few thousandths deeper and try to get the "magic" pressure that way. Pro: Same recipe, slightly different length. Con: This is the biggie. All my manuals say 2.8 is the MIN OAL for this powder. The big question is since I'm not pushing max load (47gr) can I seat 10 or 20 thou more and keep it below unsafe limits?
I know someone out there has a better handle on this than me and I appreciate any responses.