All my pellet rifles are .177 caliber. I have a Swiss Army TG-1 1400fps pellet rifle with a 4x40 scope along with a Ruger Blackhawk Elite 1200fps and a 3-9x32 scope and a Gamo Silent Cat 1250fps with a 3-9x32 scope. I'm shooting 30 yards with hollow point Premier 7.9 grain .177 pellets. Can...