Re: 300 RUM: Retumbo or H1000?
918, the US869 was most accurate for a friend's 300 RUM and my 30/378 Wby but living here in Az the temp sensitivity reared its ugly head with it. Went with the temp stable Retumbo and H 1000 which were consistent in the weather here, whether practicing in the valley or at 6500' in the mountains. Am currently working on a load for another 300 RUM now. Good luck
No apology for liking Weatherbys