Thread: Looking for load data for 303 british

Originally Posted by timattalon

While I cannot help with a subsonic load, I use 43.5gr of AR2209 behind a 215gr projectile in 303 brit and. I get about 2100fps with it out of a 18inch barrel and it is accurate...(trajectory like a stone but accurate..) I do not know how the 255gr would fare behind that pressure wise,

The 30/06 uses 45gr of 2209 behind a 250gr to get similar velocity.

If you are want subsonic the you could start with a reduced load or ty some trail boss...

Ken Waters pet load for 303B IIRC, with 215gn Woodleigh bullets was 45.6gn of RL19 for about 2200 fps - but do the research and check this, I am not handy to my bookshelf at the mo. May not be relevant to powder you have but there has been some RL19 on offer recently I've noticed, FWIW