I tried RL23 in my Criterion barreled Savage. I started out shooting H4350 in it with 75Amax in Lapua brass. It ran 39.8 grains at 3450fps as a 26” barrel when new and super accurate. After a few hundred rounds it slowed down to 3400. Recently cut it off to 22” to run a suppressor on it. Wanted to see if I could get some speed back with RL23. I ran the same batch of 75 Amax starting at 38 grains and ran .4 increments up to 43.6 grains which was just about all that will fit in the case and probably real close to being too hot. Picked 43.2 grains at 3445fps shooting under 2” group at 500yds. Just for grins I shot some leftovers that were running 3400 before cutting the barrel off. They now clocked at 3272 and still shot good. I’ve already got a H4350 load for the 22 Creed or I’d being trying RL23 in it too. If it proves to be temp stable it should be something to try.