Ridge Runners has it right. I don't use RL22 but do use IMR7828 in my 7mm RM and like the performance I get. When I worked up my load for the 140 Ballistic Tip I ended up a bit over the max listed in at least one of the manuals I consulted. I worked up very carefully until I started seeing pressure signs then backed off a bit. I am averaging 3350fps with that load and get sub .5 moa groups if I do my part. I have gotten about 6 reloads out of the brass I'm using right now with no signs of over pressure. I have a 26" barrel so that helps add around 100fps over a buddies 24" rifle using a similar loading. I also use fireformed brass and neck size only so my case cappacity is maxed out for my gun. The slower powders do seem to work well in this caliber. You might even want to try RL25 in your gun.

Good luck and be careful.