outdoorguyBP
New member
New rifle, new caliber, new bullet
Ordered a 15 round test package and started doing a little work on this one yesterday. I've been reloading for years, but never have been one to load hot or to chase that upper band of velocity. I usually stay within published data from a few different sources for the bullet weight/type and find the accuracy I'm looking for. My experience with flattened primers, fire pin dimples, hard bolt lifts and those types of things are very minimal. I would say my only "measurable" gauge as been looking at primers. So....here is what I have
Sig Cross, 308 Win, 16" barrel, Sandman K using previously fired Hornady brass and CCI200 primers. Mag loading so I'm sticking close to SAMMI overall length. Shooting around 40degs @ 2,600' elevation
Started with Varget based on previous known data of mine in a different gun, 47 grains @ 2,727 and 47.5 @ 2751, the latter was slightly compressed and wasn't going to continue. Bolt lift, extraction seemed just fine, primer edges still round.
Swapped out to CFE223, worked up from 49 grains @ 2,744 to 51 grains @ 2,850. 50.5 and 51.0 were in the same hole and only a 3FPS difference. Again, bolt lift, extraction didn't seem to feel any different here. All primer edges still round, that charge of 51.0 was getting to that compressed zone so I stopped there plenty happy with velocity.
I've loaded up the balance of the bullets at 50.7 of CFE223 and will shoot for groups. Anyone with more experience with signs of overpressure chime in with advice?
Thanks in advance
Ordered a 15 round test package and started doing a little work on this one yesterday. I've been reloading for years, but never have been one to load hot or to chase that upper band of velocity. I usually stay within published data from a few different sources for the bullet weight/type and find the accuracy I'm looking for. My experience with flattened primers, fire pin dimples, hard bolt lifts and those types of things are very minimal. I would say my only "measurable" gauge as been looking at primers. So....here is what I have
Sig Cross, 308 Win, 16" barrel, Sandman K using previously fired Hornady brass and CCI200 primers. Mag loading so I'm sticking close to SAMMI overall length. Shooting around 40degs @ 2,600' elevation
Started with Varget based on previous known data of mine in a different gun, 47 grains @ 2,727 and 47.5 @ 2751, the latter was slightly compressed and wasn't going to continue. Bolt lift, extraction seemed just fine, primer edges still round.
Swapped out to CFE223, worked up from 49 grains @ 2,744 to 51 grains @ 2,850. 50.5 and 51.0 were in the same hole and only a 3FPS difference. Again, bolt lift, extraction didn't seem to feel any different here. All primer edges still round, that charge of 51.0 was getting to that compressed zone so I stopped there plenty happy with velocity.
I've loaded up the balance of the bullets at 50.7 of CFE223 and will shoot for groups. Anyone with more experience with signs of overpressure chime in with advice?
Thanks in advance
