When I reload my Ruger Mark II in 7mm Rem mag..With 160 grain bullets I have found that either H1000 or RL-22 works great. My gun has a long throat so I hesitate to tell you the loads that I use. Get on Alliant web site and go to 7mm Rem Mag. they will give you loads for different bullet weights using RL-19,22, and 25. I love the RL-22 when I am shooting 160 grain bullets. I have an elk load that consists of 160 Barnes TSX , RL-22, RP cases, and WLRM primers. It will shoot .5 group any time you want. the velocity of this load is just under 3000 ft/sec..
When I am shooting for fun I love the 140 Nosler Bt and either IMR-4831 or IMR-4350. I use a starting load of IMR-4831 (62.0 grains)which in my gun only produces about 2900 ft/sec. This load is very accurate and is very easy on the shooter.