All loads need working up. I would start with an arbitrary 42 ish and either do a ladder test ro work up on .5gr incerments then fine tune. FWIW these figures are arrived at using specific barrels, barrel lengths, bullets etc. A hell of a lot can change when you put a Barnard action, heavy Lilja 3 groove barrel and Plama brass together with RS52 and a 155gn bullet. Mostly over HME if you are shooting FTROriginally Posted by bullbarrel
It is a mystery.
OUCH
44gr of N140 was my standard long range load for 155gr SMKs (I'd use 41gr at 100 yards, 3MOA lower but softer on the shoulder). Interestingly the Viht online says that is too much. It was below the what sierra published in the loadall book I had. Don't shoot it any more.
For the 175s that looks way over. Perhaps they are thinking of the 155s?
Be safePeople tend to obsess over flat trajectories, whereas given we mostly shoot at known ranges (hunters excluded, I get that) then a best load would either be for accuracy/comfort, or staying supersonic if over 800 yards.
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