I have a .204 Ruger load I worked up for coyotes this fall thats a solid 1/2" but the SD is 40...velocity seems to be all over the map but I get some really good groups. My Max distance shots will be 400 yards...no long range shots and am wondering if a high SD really matters? Im not sure why its so high either. Im using the same brass lot, trimmed to the same length. Power is measured precise...CBTO measurements are uniform. Using Berger 35 gr match/varmint.
Cheers!!
Cheers!!