RE: 7mm rem mag loads with RL 22
Hello Jem. I have been loading the 7Mag for years with RL22 as it was developed specifically to use in the 7mm Rem Mag. My rifle likes the 140gr bullets with 68 grains of powder and a standard 210 primer. I have never used the 154gr Hornady, however, you can go on the alliant web page and look it up. I would suspect somewhere around 66 grains would be max. RL22 is the best powder I have found with the 7Mag. Regards, Rick.