I just purchased a remington r25 .243. It has a 20 inch, 1-10 twist barrel. I am going to use it mainly for coyotes. I'd like to load 58 v-max .250 b.c., or maybe 87 v-max .400 b.c. for long range. I don't have a quickload program but I'm sure someone here may be able to help me. The powders I have on hand are: Varget, IMR 8208xbr, IMR 4895, IMR 4350, IMR 4007ssc, H380, IMR 4320, RL22, Benchmark. I'd like to use an extreme powder or one that is temperature insensitive, I hunt in temperatures ranging from 95 degrees F to -10 degrees F. The 58 v-max will be loaded to 2.600 - 2.630 oal. The 87 v-max will be loaded to 2.630 -2.650 oal. I do have manuals from nosler and speer and the current hodgdon 2010. But don't see any data for the imr 8208xbr in 58 v-max or varget in 87 v-max. Any suggestions? Remember it is a 20 inch barrel.