.243 Win data
laylandad Member Posts: 960 ✭✭
edited October 2009 in Perry Shooter Competition Shooting and Reloading Forum
I've worked up to a really good load in the Speer #13 manual using a 90gr Speer spitzer SP with 38.5gr of W760 with CCI 250 primer. I have noticed that cross-referencing data from the powder manufacturer, Speer seems to be a little underloaded. The #13 has a starting load of 37.0 gr of W760 and max of 41.0gr with a magnum primer. Hodgdon website has the starting load at 41.0gr and max of 43.5 with standard LR primer. Who is right? Is it safe to continue to use the Speer data? Is the difference in the data the primer?