For u experts. I am working up loads with RL 23 with little literature available that I have found. Rifle is pre 64 w/kreager 24” bbl. I have a good load with H4831 SC and trying the new RL 23. I expected I would be able to to use a grain more and increase velocity.

Bullets are barnes LRX in 139 and 145 gr and nosler brass. Actual range experience is showing the opposite to be true with oressure signs emerging at 1 grain LESS of RL 23 than H4831 SC. Heavy bolt lift and primer pocket expansion being noticed.

Not being an expert but having some reloading experience I seek your opinion. Rifle shoots good groups of 1/2” or so at levels of 61-62 grains of both powders.

Any opinions appreciated.