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Old 08-31-2021, 08:39 AM
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25 grains of 4227 with a jacketed 240 is on the warm side. 24 grains is the heaviest load I have in my load data.

Out of a rifle barrel, you will get a little better velocity with a slightly slower powder like Win-296 or lilgun, with a little less pressure, though 4227 will certainly work as well.

Larry
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