mongoose33
Member
I've been reloading .38 special to use in my Rossi R92 38/.357 Lever Action, in preparation for some Wild Bunch 3-gun stuff, and when I've been chronoing them a strange pattern emerges--the first round is far slower than all the rest.
In a variety of loads, this is what I get:
Hi 812 894 927 985 993 985
Lo 763 650 766 814 810 798
Av 795 838 886 907 904 906
It doesn't matter the loads, though the first four are me working up through progressively higher Bullseye loads, and the last two a couple of 4756 loads, but in EVERY case, the LOW round is the first round.
And it's really low compared to all the rest.
Question: why?
I'm crimping these into plated bullets, and I've pulled some and there's a clear crimping groove, so I don't believe the bullets are being set back after the first one--and the amount of recoil isn't that serious anyway.
I've run a couple of loads through using linotype cast bullets and I don't get the same effect.
I've searched on the web for this issue, and can't find anything on it. Any insight?
In a variety of loads, this is what I get:
Hi 812 894 927 985 993 985
Lo 763 650 766 814 810 798
Av 795 838 886 907 904 906
It doesn't matter the loads, though the first four are me working up through progressively higher Bullseye loads, and the last two a couple of 4756 loads, but in EVERY case, the LOW round is the first round.
And it's really low compared to all the rest.
Question: why?
I'm crimping these into plated bullets, and I've pulled some and there's a clear crimping groove, so I don't believe the bullets are being set back after the first one--and the amount of recoil isn't that serious anyway.
I've run a couple of loads through using linotype cast bullets and I don't get the same effect.
I've searched on the web for this issue, and can't find anything on it. Any insight?