I'm new to a 300 win mag and also to reloading. I'm trying to reload for as much accuracy as I can get. I have CCI large rifle magnum primers and Remington large rifle magnum primers. Which one is going to be best for accuracy??? I've heard that Federal Gold Match primers are the cats meow, but of course I can't get any. I'm having a Winchester model 70 rebarelled with a match grade barrel and bedded trying to get as much accuracy as possible. I'm using Norma brass and sorting the brass by weight, deburring the flash hole, uniforming the primer pocket, cleaning the brass with a sonic cleaner, sorting the bullets by bearing surface and measuring each powder charge to within .1 grain. I won't know how close to the riflings I can get with the bullets until I get the rifle back. Any advice would be appreciated. Thanks.