Re: 240 SMK with H50BMG
I would give H50BMG a try, retumbo works great for my 200 lrx hunting load, but it gives me too much ES and SD with the heavies. I shoot anywhere from -20 to 75 degrees and according to Kirby Allen the H50BMG is pretty temp stable. I have some R25 but use that in my sisters 7 rem mag pushing 175 a-frames.
Confucius say, "He who go to bed with itchy butt, wake up to smelly finga."