02 November 2008, 01:35
Big Bore Fan.405WCF-210grsXTP/HP-IMR4198
I reloaded the 210grs XTP/HP allways with 52grs of Norma N200. Now, I´m thinking to change the propelant. Norma powder is very expensive (60-70.-€/500g)and have long deliverytimes. But I have enough IMR4198 and Quickload means with 47grs behind the XTP bullet, I have ~2000bar pressure.
Does anyone have experience with this bulletweight/powder combination?
Thanks, Martin
04 November 2008, 05:41
elatheThis data is from Hodgdons web site for H4198 and 300 grain bullets. It might give you a place to start.
300 GR. HDY FP Hodgdon H4198 .411" 3.085"
Start... 37.5 1925 32,300 PSI
Max... 41.5 2091 43,000 PSI
04 November 2008, 06:48
ramrod340Not in a 405. I've been using 4198 and 210s in my 400PDK wildcat my capcity is almost 9% larger. I get about 1.5-2" groups at 100yds. It is hell on waterjugs.
For the 405 Loadtech says 37-41.1gr and 32,300-35525psi velocity 1990-2115fps.