I'm. Going to elaborate on what everyone else has said, Imr7828ssc will give you the highest velocity in just about all the short weatherbys with normal bullet weights, but it will also peak real quick, doesn't give a lot of warning on pressure and if you use 7828 and max your load out, do it when its 70-80*, don't do it when its 30* and then try to explode a groundhog when its 85*, your rifle might explode instead.
Very good point! Safety, safety, safety ... there is no substitute.
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H4831sc or H1000 with CCI 250 primers. 4831 with 140s H1000 with 150s, although H1000 with 150s will likely be compressed for best results. If you have a 10 twist and don't mind having a loaded round over 3.5"s long the 165 Matrix vld over Retumbo with a 215M may be worth a try, should be able to get 3150 with Retumbo/165 combo.
I am not comfortable with compressed loads....my 270 WMag is a 64 German Mark 4......at the present I an loading R-22 with 68g for the 150 Barnes....but with to find the best for that gun....Compressed?..What should be my concerns? Thanks for getting back to me,
A compressed load makes no difference, if its a safe pressure its a safe pressure compressed or not. Just never use a powder that you have to compress so hard that it could cause the bullet to come unseated. Also a majority of the time compressed or densely charged loads have a tigher ES and SD because of the lack of air space in the case and not letting the powder shift.