Reloading .303 British : FMJBT Bullets for reloading 303

BTW, I don’t often shoot a “clean” 600 yard score with my AR (score of 100) and it has a heavy barrel and 4x scope, easily capable of sub-MOA accuracy.  I’m quite sure that I’m the limiting factor in the scores I get on my No. 4 rifles, they are indeed capable of holding the 10 ring on the SR and MR targets, and I suspect also on the LR (Long Range) Target.