Just in case anyone else in here shoots the .445SM, 2 of my favorite loads feature IMR-4227 and the WLR primer.
I have reamed the Starline brass to use rifle primers and also use cut off rifle brass:
31 grains 4227 under a Cast Perf. 260 WFNGC 2.0" COAL
30 grains 4227 under a Hornady 300 XTP crimped in the lower cannelure 2.08" COAL.
Deviations in the single digits or low teens.
There are others but these 2 have always shined for me.
4227 is a widely underrated powder.
Maybe because it is not flashy and doesn't produce every last fps possible.
But to paraphrase Townsend Whelen it's the accurate guns/loads that are interesting.
And that is 4227's forte. What's not to like?
I am still trying to get A-1680 to behave anywhere near as well, looking for the potential extra fps.
Going to the WLRM with those loads next.
Back to the loading desk......
Some comparisons with 296 and 1680 are to be found in this evolving spreadsheet:
Sorry about the blank pages. The conversion to PDF is not perfect (OpenOffice).
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NEMO
"Everything 44"
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