Aug 27, 2024 #1 R rickt300 Beginner Jan 17, 2008 13 2 I have a couple of pounds of Superperformance powder. Like to burn it in my 7MM RM with 160-162 grain bullets. Latest burn rate charts has it right next to R19 so would data slightly reduced for R19 be a good place to start?
I have a couple of pounds of Superperformance powder. Like to burn it in my 7MM RM with 160-162 grain bullets. Latest burn rate charts has it right next to R19 so would data slightly reduced for R19 be a good place to start?
Aug 27, 2024 #2 S SJB358 Ballistician Dec 24, 2006 32,270 2,745 I wouldn’t be scared of bracketing it and starting low.
Aug 27, 2024 #3 RL338 Handloader Mar 23, 2017 3,086 4,942 In limited testing in my 375 Wby it takes 4grs more to equal Hybrid 100V. Start low and work up as mentioned above.
In limited testing in my 375 Wby it takes 4grs more to equal Hybrid 100V. Start low and work up as mentioned above.
Aug 27, 2024 Thread starter #4 R rickt300 Beginner Jan 17, 2008 13 2 Ok will do as soon as I finish bedding it.
