Primers,

[bpcrshooter]

for a few years my dad has used 210M's in his 44-70. After I had some success with fed150M's in my 45-70, I had him try them. He loaded up his load plus a few .5, 1gr under and .5 ,1gr over. It was happy .5gr over his original load, the groups also shrunk to half the size. Ive tried the same in my wifes 45-70 with the same results. Next will be my 45-90 when it comes back from the Dr.