texasgunhand
08-22-15, 17:17
I thought I would try some S/B primers since I can get them half price over cci small pistol... Loaded up 50 one day and they seemed to shoot fine but seemed under powered..Getting sooty brass like it's undercharged but its the same charge as normal 4.2 of win 231.
4.1 gives me sooty cases and 4.2 seals the Chamber with brass coming out clean with CCI primers.
Loaded up 100 with s/b primers at 4.2 and they even felt under powered and came out black and sooty like a 4.0 charge.
So i checked my uniflow,checked my scales both the digital and 10/10 and everythings the same. Can changing primers have that much effect on an established load? I've shot hundreds of the cci with 4.2 of win231 and the brass always comes out nice and clean. With the s/b primers Iam going to have to wet tumble them to get them shiny again,, walnut media isn't going to get it its so bad.
Just fyi, my normal load for 9mm is 4.2 of win.231 useing a 124gr berrys plated bullet and a cci small pistol primer set at 1.150 per winchester data. The only thing different is the S/B primers.
At the end of each shooting day I shoot 5 rounds of federal allum.case fmj to clear the barrel if any lead gets in from the berry bullets. Normally I don't really feel any difference in them and my load with the cci primers,but today with the s/b primers there was a difference between those and my loads , mine felt weak,normally they don't.
Any ideas?? maybe I will have to bump it to 4.3 with the s/b primers next time. They shoot well but somethings wrong. I've seen bigeds primer pics so I know there's a difference in primers,this is my first time useing a non american made primer. I have about 1800 left, may have to increase my charge to compensate maybe.
I weigh every 5th or 10th round and my uniflow stays on track very very rarely it will through a 10th under but that's normally me not operating the handle smoothly.
4.1 gives me sooty cases and 4.2 seals the Chamber with brass coming out clean with CCI primers.
Loaded up 100 with s/b primers at 4.2 and they even felt under powered and came out black and sooty like a 4.0 charge.
So i checked my uniflow,checked my scales both the digital and 10/10 and everythings the same. Can changing primers have that much effect on an established load? I've shot hundreds of the cci with 4.2 of win231 and the brass always comes out nice and clean. With the s/b primers Iam going to have to wet tumble them to get them shiny again,, walnut media isn't going to get it its so bad.
Just fyi, my normal load for 9mm is 4.2 of win.231 useing a 124gr berrys plated bullet and a cci small pistol primer set at 1.150 per winchester data. The only thing different is the S/B primers.
At the end of each shooting day I shoot 5 rounds of federal allum.case fmj to clear the barrel if any lead gets in from the berry bullets. Normally I don't really feel any difference in them and my load with the cci primers,but today with the s/b primers there was a difference between those and my loads , mine felt weak,normally they don't.
Any ideas?? maybe I will have to bump it to 4.3 with the s/b primers next time. They shoot well but somethings wrong. I've seen bigeds primer pics so I know there's a difference in primers,this is my first time useing a non american made primer. I have about 1800 left, may have to increase my charge to compensate maybe.
I weigh every 5th or 10th round and my uniflow stays on track very very rarely it will through a 10th under but that's normally me not operating the handle smoothly.