What you are asking for is a �Catch 22�. You want to shoot p-dogs at 300 yards, with less noise, less recoil, and less barrel heat with a 22-250.
If you own a 22-250, enjoy what you have. A round that can truly make a 300 yard shot.
Hell a 22 long rifle rimfire (less noise, recoil, and barrel heat) can make a shoot on a 300 yard prairie dog if it gives you enough pot shoots at him.
