I have two of them. It has a 35* shoulder and I believe it mics .495 at the shoulder. If memory serves me correct there is about 2.5-3gr of difference between the 3-8mm Mag and the .308 BAER. The .30-.358STA (.300 Jarrett) is about .5gr more than the BAER. I've had and used all three and prefer the 30-8mm due to brass forming ease. There also wasn't any appreciable difference in accuracy between them.