MachIVshooter
Member
OK, I've had my .454 for a while but only recently got around to purchasing dies. So I loaded up 100 rounds using new Starline Nickel brass. 50 were 300 grain gold dots and the other 50 were 300 gr. Sierra JSP's. I went out to chronograph and found 2 problems. One was the bullets unseating and binding the chamber after 3 or four shots. I had a pretty good roll crimp on 'em, but perhaps I need to not expand the cases and just use, say, a .45 ACP ball to flare the mouth a little?
The other problem is velocity. I used data from freedom arms website (which indicates a 7.5" tube), and loaded just a bit under max (I used 31.0 grains of H110 with CCI small rifle primers). I am only getting around 1450 FPS from my 7.5" SRH, while the data indicates that it should be somewhere in the 1700-1750 FPS arena. Should I be using magnum primers?
If anyone has any suggestions it would be appreciated. As it stands I am getting better performance out of my .50 AE Desert Eagle with 6" barrel (325 grainer @ 1520 FPS).
The other problem is velocity. I used data from freedom arms website (which indicates a 7.5" tube), and loaded just a bit under max (I used 31.0 grains of H110 with CCI small rifle primers). I am only getting around 1450 FPS from my 7.5" SRH, while the data indicates that it should be somewhere in the 1700-1750 FPS arena. Should I be using magnum primers?
If anyone has any suggestions it would be appreciated. As it stands I am getting better performance out of my .50 AE Desert Eagle with 6" barrel (325 grainer @ 1520 FPS).