I have a gen 1 Ruger American hunter with the bull 20” barrel. I’m not sure if I should keep shooting the 147’s or change to the slightly lighter 140 for long range shooting 800-1000. Since my barrel is only 20” I don’t know if going down in bullet weight will be better or not to get it going a little faster and actually make a difference. With the 147’s there coming out at an average of 2320…