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Just the same as people did with the .222 Remington and the .22 Hornet before that.
GPM.

Greetings @ Micky Duck,
The 24.5 grain load with the 55 grain projectile in the .223 goes back a very long way. It was in Nick Harvey's original 1980 manual and was for AR2201, a faster non canister...

Greetings Pommy,
Thanks for your responce and suggestions. I have pretty well decided on 24.5 grains of BM8208 for the 60 grain projectiles. The load shot well at 200 metres and the rifle now has a...

Greetings zimmer,
I still look very hard at chronograph reading that do not match predicted velocity and also tend to stop adding powder too soon which beats the alternative. My chronograph is a 35P...

Greeting again,
Having an inside morning so I graphed the two sets of data I have been working with, the Hodgdon /ADI and Data from Handloader developed by Brian Pearce. I find the graphs make it...

Greetings johnd and all,
After a bit more digging I have reached the conclusion that some of the Hodgdon /ADI data for BM8208 has been developed using a fast batch. Other of their data falls into...

Greetings all,
I have been scratching my head over some chronographed loads in my .223 using BM8208. I did some comparisons recently in my .308 using BM8208 and AR2206H and others. Velocities were...