cherokee305
New member
I added a cooper 22-250 to my collection a couple weeks ago and I'm trying to work up a load. Coopers recommended load of 36.5 gr of H380 behind a 50 gr blitz king shoots great and runs around 3600 fpm. I worked my way up to 38 gr in .2 gr increments and kept similar groups, but saw very small if any speed increase. I guess I'm wondering if others have seen this? I'd hate to stop on 3600 fps, that's only 300 fps faster than I'm shooting them in my 223, with 10 more grs of powder. I was hoping to have more explosive results in the prarie dog town.