Search:

so "something" about them OSO loads suits that type of rifle....as said earlier try seating projectiles same/similar by setting up die using factory round.... got bugger all to loose trying it.

my .223 doesnt care about projectile ,feed it pretty much anything between 45-60grns and it will poke them into roughly inch or under....it has been known to do so with mixed loads too.

assume..you talking .223?????
benchmark data available online.......
first thing to try....use the OSA loaded round to set up your bullet seating die....eg put loaded round in press,have guts of...