In addition to RL-15, I've used RL-12 (obsolete, but available at some gun shows) with good results in my Rem. 7600 Whelen. H4895 also works with the 225gr bullets in this rifle, but I've not been able to get the velocity I wanted that the other two powders readily produce. (M. D. Smith's reloading site has reloading data for the .35 Whelen using RL-12.)
