I bought some 255gr SWC to use in my 45acp and 45auto rim.
I loaded the first rounds last night and shot them today. I loaded the acp with 3.5grs of Bullseye and the AR with 4.0grs.
Both bullets loaded to the crimp groove.
Shooting them thru the chronograph today they both averaged 680 +/- fps. But there were huge velocity variations on both loads. They both shot well. The revolver AR rounds had several cylinder fulls where there were 3-4 rounds cutting one hole at 15yards off hand.
I’m looking for any suggestions on lower the extreme spread.
I’m weighing each charge and using a Redding profile crimp die.
I know there is some room to increase the powder charge or change powders.
Does anyone have any experience with this combination that can offer some advice?
The factory Double Tap +P version 875fps advertised.
