The Firing Line Forums - View Single Post - Rifle Accurate at 25, 50 yards, not at 100

elmbow · September 16, 2015, 02:26 PM

have you slugged the barrel? Read up on how to slug using egg sinkers and slug it, see what you come up with. If you are getting good groups at fifty, I doubt it is an oversized bore but.......it's worth checking. Are you getting any keyholing on your target?
I would get rid of the Simmons scope no matter what, spend at least $200 on a scope. Double check your bases and rings, but this doesn't sound like a scope or scope mount problem, you are too consistent on paper. The barrel could be oversized and sending them off on a tangent beyond fifty yards. And another thing, adjust your scope at fifty so you are hitting where you're aiming. Make sure you are shooting consistently.
Also, read up on the 8mm history, there were two bore diameters, a .318 and .323 IIRC. Have never owned one but remember reading precautions on the early 8mms.

September 16, 2015, 02:26 PM	#7
elmbow Member Join Date: August 9, 2012 Location: Utah Posts: 81	have you slugged the barrel? Read up on how to slug using egg sinkers and slug it, see what you come up with. If you are getting good groups at fifty, I doubt it is an oversized bore but.......it's worth checking. Are you getting any keyholing on your target? I would get rid of the Simmons scope no matter what, spend at least $200 on a scope. Double check your bases and rings, but this doesn't sound like a scope or scope mount problem, you are too consistent on paper. The barrel could be oversized and sending them off on a tangent beyond fifty yards. And another thing, adjust your scope at fifty so you are hitting where you're aiming. Make sure you are shooting consistently. Also, read up on the 8mm history, there were two bore diameters, a .318 and .323 IIRC. Have never owned one but remember reading precautions on the early 8mms.