haven't been able to find H4350 so ended up going with RL16. More temp stable than 15 or 17.
Been getting single digit SDs with most loads, unreal, 5 and 6 SD numbers.
New 6.5 CM Nosler brass, 139 Scenar, F210, 2.777 OAL, ~0.017 off lands.
41.0 2776 AVG, no sd, bats crapped out.
41.3 2800...