Not interested in pushing to max pressures and vel. in my Encore, because of frame stretching. Thats what my custom Savage/PacNor .338 RUM is for with 225 gr. Barnes TTSX. Plugging in other powders into QuickLoad only shows me pressure spikes near max case capacity, whereas 748 stays even....that's why I chose it and I have some to use. If this was a bolt gun and my only one, I would experiment more, but right now interested most in accuracy.......I have one bottle of 8508XBR if I don't get exactly what I want with 748 will try it next.
I plugged in your load into Hornady Ballistic calculator: 160 gr TTSX with BC of .342 at 3020 and my 185 @ 2750 with BC of .432 at 300 yds. sighted at 100 yds, yours drops 12" my load, 14". At 500 yd a 6" difference in favor of 160 gr. and both doing near same velocity, 1800 fps. but 185 has 200 more fpe. IF 2000 fps is needed for proper expansion of these bullets, it appears 400 yds. is max for that expansion with both above loads.
