Re: 7remmag w/ 150 mks, load ?
I used them in my SFII a little during initial break-in. They shoot well with H4350 and H1000 in that particular rifle. I was just using mild loads(mid range) and only pushing them about 2850-2900 fps. Groups in the .4 range at 100, not too bad for a new factory tube.
I'd say you may get a great combo with either 4350s, R22, H1000, IMR7828, or H4831.