Home Forums Hunting & Shooting Ask The Gunwriters Acceptable accuracy , out to 400 yards

my hunting rifle barrel is still dirty from 3 or 4 years ago maybe longer ? in the past it shot just under an inch 3 shot group at 100yards and i was happy with that always .this year i loaded Hammer bullets for this rifle with the dirty barrel and now it shoots 1/2 inch 3 shot groups i did 2 of these 3 shot groups both were 1/2 inch / 100 yards i said good enough took rifle deer hunting took 1 shot at 125 yards was a bang flop on the shoulder of the buck where i aimed at buck was standing when i smack him. barrel still dirty will check it next fall before deer season again.i will be using Hammer bullets again too with the barrel still dirty.