Hey Luke, as our resident barrel burner on this forum, I can tell you that a hot load with a light bullet, is a lot less harder on a barrel than one with a heavy bullet, same with a slower twist easier on a barrel than one with a fast twist , from my findings I think it has to do with dissipating pressure, which a light bullet and slow twist will do, don't try to build a rig that tries to do every thing it just never works out.
Dean
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