I sporterized my 8mm Mauser M48 and I'm loading 180 gr. Barnes TSX over H380. Do any of you have any experience with this round? If so, what powder would you suggest using? I have H 4831SC, IMR 4350, IMR 4064, RE 19, Win 760, H 380 and Varget. I also have Barnes manual, the new one, but it doesn't offer many load suggestions. It says AA 2700 is most accurate, I haven't found 2700 yet and I've been looking for over a year. I'm trying to get 2650 f.p.s. for Elk and Mule deer, any suggestions are appreciated.