I took my custom BRNO out Sunday and tried 57g of RL 15 with 250G Speer Hot Core. Was at 3.33 COAL. The Norma Brass was 2.92 at 72.4 gH2O after firing. WLR primer. Chrony averaged 2600 fps.

Calculated pressure 61,881fps. at that velocity with Quickload, well crimped and sitting .01 from the lands.

No / NADA NONE signs of stress on the rifle or brass, smooth extraction. Nice clean and sharp recoil with a satisfying "crackboom".

I would say 57g is very MAX Hot Load with the new RL 15 coming from Sweden.

Any thoughts on that theory?

Last edited by frhunter13; 03/27/17.