David Barham
FNG
That sucks
I did some below zero velocity testing with my 200.20x Berger load. Factory tikka 24” barrel. Zeroed for Norma 180 Bondstrike.
H4350 with the 200.20x had a 7 fps velocity increase going from between 57-59 degrees in July (average of 3 range sessions) to -7 degrees. The change per degree is small enough across that temp range to call it zero change.
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What is your charge weight with the 200.20x? I've got an 8# of H4350, Norma and ADG brass, and 500 bullets to play with. Hoping to get a good load to try in the 300WSM barrel I have. Hopefully the 11 twist is fast enough for the elevation I hunt in.H4350 with 200.20x works well for me.
You should be in the ballpark between 61-62 grains. Start low and work up. I don’t have my notes handy, and I ended up sticking with the 190 LRAB to have commonality with my hunting partner. We run the exact same load.What is your charge weight with the 200.20x? I've got an 8# of H4350, Norma and ADG brass, and 500 bullets to play with. Hoping to get a good load to try in the 300WSM barrel I have. Hopefully the 11 twist is fast enough for the elevation I hunt in.
Jay