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Old May 22, 2021, 01:04 PM   #1
Join Date: February 24, 2020
Location: Wisconsin
Posts: 21
.243 AR-10 Slow burning Powder issues? General issues with .243 AR10?

A friend is building a AR-10 .243 for me. Aero upper and lower, 22" custom Mcgowan barrel. I hand load for .243 bolt action with RL19 and IMR4831. Guy at the local reloading supply store advised I may have issues with having enough pressure to cycle the rounds properly due to the slower burning powders that I am currently using. Can anyone shed more light on issues that I may have to keep an eye on with my .243 build? Is this a common occurrence? Can I just load hotter rounds (closer to max, or max) or would I need to use a faster burning powder? Thanks in advance for your assistance.

Last edited by Natty270; May 22, 2021 at 01:35 PM.
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