I’ve got to look back through my notes, but remember loading up a compressed load of RL26 around 63.5 gr, giving just over 3200 fps from my 20” bbl BAR with Hornady brass - with slight pressure signs but cycling issues.
Keep in mind Hornady brass in 270 Win is 1.5-2 gr H2O capacity higher than Rem, Win, and Fed brass.
That was with a “hot lot” of RL26. My new lot is slower and definitely case capacity limited even with Hornady brass.
