beerbucksducks
WKR
I recently had my .243 barrel cut to 18” and threaded. My old load did not shoot well after cutting and floating the barrel and bedding the stock. I am working on a new load now. H414 and 95 NBT are showing promise for accuracy and is at 2880 fps at hodgdon’s max of 42 grains. I also did a velocity ladder with Midwest Powder 551 which is supposed to be the same burn rate as h414/w760. I loaded in .5 grain increments up to 45 grains with out a sticky bolt or pressure signs on brass. Velocity was 3050 at the top end. Looking at the data max loads for h414/w760 are 40-42 grains and 2900-3100 out of 24” barrels. Where do most people stop while looking at velocity out of a short barrel compared to 24” data? If book data is giving 3000 with 40 grains and 24” I’d imagine 45 grains and 3000 out of 18” is pretty hot, despite the lack of pressure signs.
I am planning on staying around 42-43 grains and 2900ish, since h414 isn’t temp stable and I won’t have the ability to test it in the heat for a couple more months. I am curious how other people interpret pressure in relation to velocity in shorter barrels.
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I am planning on staying around 42-43 grains and 2900ish, since h414 isn’t temp stable and I won’t have the ability to test it in the heat for a couple more months. I am curious how other people interpret pressure in relation to velocity in shorter barrels.
Sent from my iPhone using Tapatalk
