Thread: Jump

Hi All
looking to develope a load for my 7rm using 160 gameking hpbt
looking at 2225,big range of charge weights listed by sierra, 7.5gn approx
and also 2217, even bigger range,like 10gn.
ADI data is for 160 partition or 162 hornady spbt with about half of the
range of charges(+-4gn) starting around the middle of sierra's range,going up
So,would you,
a)load 3 at 0.5gn increments right through the range,
b)load 1 each at 0.5gn increments from start charge weight for the
first say third of the range to just check pressure etc,then 3 at each
0.5gn increment from there,assuming faster is better
c)ignore sierra start point,just use adi data,load 3 at each 0.5gn increments.


Also why does a 160 nosler partition have start charge of 4gn less than a
162gn hornady spbt?

You thoughts appreciated