I loaded some ammo for my brother's .280 Remington. The 2 that worked best for him were 52.0 gr. of IMR 4350 and 54.0 gr. of IMR 4831 using 140 gr. Barnes X bullets. I like using the "lead-free" bullets, the Hornady GMX is another favorite of mine. Hope this helps.
Originally Posted by Work2hunt