I saw this long time a go in a gun book, about in the 70's. What you do is get some #1 buck shot that is 310 dia. . Put 3 grs. of 700X in the 30-06 , then seat the shot about half way and crimp it. I have a Remington 700 and it well put the shot at about 1400 PFS. I get about a 1" group at 25 yds.. And it well kill a squirrel.