I'm new to reloading and have not started just yet. I have a Remington R25 and Savage hog hunter, both 308 and 20in barrel with 1:10 twist. I have been researching plenty of load maps, powder brands, bullet brands, and primers. I have some questions that have been bugging me and I would like some advice from the experienced reloaders. Primer questions In the Speer manual #10 from 1979, they are using 165gr bullet and Winchester 748 with a magnum primer. Can I still use this data with large rifle primers instead? Is Winchester 748 a slow burning powder that needs/requires the extra ignition from a magnum primer? Is there an advantage to using magnum primers vs large rifle primers? Does the seating depth of a primer affect bullet accuracy? Case length question I have seen two case lengths, 2.005 and 2.008, which case length is generally ideal for 308? Powder brand question From your experience, is there a certain powder brand that you get the best performance with or have had the most success? Last two questions How can I tell if my rifles can handle compressed loads? Does having a muzzle brake have any affect on reloads?