300 Fireball and 300 Whisper reloading references on the web

[N310toN170]

I use this resource alot for comparing comparable powders between brands...

http://www.reloadbench.com/burn.html

Fudmottin:

I'd like to hear how that load works out. From a mock up of that round to reach those speeds you will be at 100% powder capacity. Given that you will only reach ~80% burn rate it may be asking alot to control muzzleflash or contain in a suppressor.