Thread: 284 Winchester load data using AR2209

Greetings @Boomdog,
It depends on what velocity you are getting. Current AR2209 is faster than the older stuff and there is a lot of old data still around. I suspect that your current load is max or over max. You don't state the actual projectiles you are using and this can have a big effect on pressure and velocity. Nosler lists 53 grains as max with the 140 grain.
GPM.