I just bought an Akela in .177 and have shot it out to 140 yards with the 13grain knockouts and the 15 grain nsa's My good scopes are on powder guns, so I was using a bugbuster 3-9/32, which has huge crosshairs at 9x. the best group is 7/16 at 50 with old brown box crosman 10.3's and a dime at...