Allen,

I use 69.0 gr. of R15 and a 250 LRM primer behind a 300 gn. A-Frame to get 2456fps.

I don't have my Solid load here at work but it used a similar amount of powder behind a new Hornady solid.

Both loads were right on top of each other at 100 yds.

These loads worked fine for my buff, if he'd have just died sooner. As a side note I have two of the solid that traversed 3/4 of the length of the buff (extreme quartering away) found under the brisket. No real deformation.

-Steve