given at distance of 300 to say 400 yards and the 6 mm bullets of 55 to 70 grain using varmint bullets I hear that you need 400 foot pounds of energy to be on the target or so.if you look at some of the posts I fell this may not be true. any thoughts on this?i shoot a 22 br and used 22 250s and a 6 mm ppc with sierra and custom bullets.the ranges were up to 350 yards.
gary b
gary b