22 br

[maddysdad]

any one using 2520 powder.got some the other day .what would be a starting load for 52 grain bullets.i saw that 33.7 was giving 3800. but this must be a max load i would think.

 

[rockhound78]

Definitely max load in MY gun. Erratic. I dropped 10% from the Max. on the main site (,as it seems you perused that 22br section),and worked my way up to that Max. and had to drop back a bit. Worked a lot better then. As it said on the Main Site, 2520 varies lot to lot. I was using 53 Vmax and velocities were about 3823fps. My gun was a 1-12" twist. I am sure the max. would be lower in a faster twist.

 

[maddysdad]

my gun is 1/14 twist.i was thinking but will check more into it of a start load of 32.0 then go up .3 tenths of a grain to 32.7....