Reloading .303 British : VihtaVuori N140 Loads

I doubt the primer will have much effect if it is a standard Large Rifle primer.

I’m going to repeat one additional test using 38.5 gr; in my first test with 38.5, three of four 10 shot groups did really well (just over 2 MOA).  The fourth group poor result might have been me (4 MOA).