A set of 0-1 mikes and a good hand priming tool to tell if your primer pockets are getting big are your friend.
In the accuracy game how fast a bullet traveles is irrelevant other than usuing it to figure your drops.
I watched a 12 year old girl running a 6mm BR with a 105g Berger mop up at Ridgeway against guys that have been shooting for decades.
Her dad taught her how to read wind flags.

dave

[Linked Image]

Only accurate rifles are interesting.