SO long as you don't blow a case, I can't disapprove. Safety first but I know you care just as much about your hide as I do mine, so perhaps you can give us a report down the road on the SLR. Can't imagine running any faster than your 47, but it is a larger case, albeit not a Small primer Lapua case.
It will be interesting when Lapua 260 brass users wring those out w/RL17.....
I won't tell you the load but my .260 averages 3177 with a 130 gr. berger and REMINGTON brass with Reloder 17......... no pressures and a sd in the single digits. The 30" barrel may help some of that ,its the smoothest krieger ever made in my humble opinion.
