ive run the bullets through my 220 with good results and will test them through my 22/250 later on the 22/250 is lighter more handy rifle for all around hunting. guess i have cruel intentions in mind.
id start at 38grs of h380 and go from there. this load is well below max and should produce very good results or atleast get you started.
what are your plans for the 53gr tripple shocks. both my 220 and 22/250 may see some use as a medium weight hunting rig. antelope small deer kinda thing.
i just checked and 38grs is about 1.5grs below max, you could start wokring up from as low as 35grs if you wanted with the max being at about 39grs. if you make it much higher than 39grs you may be dealing with compressed loads.
in winchester brass 39.5grs is at 93% of the cases capicity
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