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Old 08-31-2021, 07:47 PM
tdan tdan is offline
Join Date: Nov 2006
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The load data I posted earlier was for IMR 4227. I thought I would check my old Hodgdon #26 manual for 4227 data. They show 24.0 gr MAX for H-4227 for a 240 gr jsp with 36,900 CUP. Turn the page and you find the MAX load for IMR 4227 is 22.0 gr for same bullet with 33,900 CUP. Kinda makes you think that Hodgdon is skewing the results to show a velocity edge in their version. The current story is that the latest version of IMR 4227 is simply the H-4227 formulation with an IMR label on it. Since load data and results are all over the place with this powder, my recommendation to the OP is just go with H-110.
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