That was a question I never thought to ask until my brother and I went shooting on Monday and he answered it for me.
He had a Remington 700 SPS Tactical rifle in .308 that he had just sent to a gunsmith to have the trigger replaced and action put into a new Magpul stock. Rifle was his former SWAT sniper rifle and can do some impressive groups.
I broke out my new Ruger Predator in .308 and was slowly putting it through it's paces while he got out the 700 and started shooting at the 25 yard target to verify zero. He wasn't on the paper.
I told him to remove the bolt and sight down the bore and the scope to see if it was close. He tried, but the high comb of the new stock wouldn't allow it.
He kept shooting and trying to judge the dirt being kicked up on where it was hitting. Finally, he walked up to the 10 yard mark and shot the rifle at the target...
Bullets were hitting sideways. I told him that meant that something was seriously wrong with the barrel. Said the bullets must be really undersized for the bore. He looked at his box of very expensive Federal Match ammo and realized that he had been shooting 6.5 Creedmoor ammo in a .308 rifle. He was not happy.
He cleaned out the barrel and loaded the proper ammo, then shot this sub half MOA group at 100 yards, which blew away my best group of 7/8"...
The spent casings were fire-formed pretty well to the .308 size on the left...
He had a Remington 700 SPS Tactical rifle in .308 that he had just sent to a gunsmith to have the trigger replaced and action put into a new Magpul stock. Rifle was his former SWAT sniper rifle and can do some impressive groups.
I broke out my new Ruger Predator in .308 and was slowly putting it through it's paces while he got out the 700 and started shooting at the 25 yard target to verify zero. He wasn't on the paper.
I told him to remove the bolt and sight down the bore and the scope to see if it was close. He tried, but the high comb of the new stock wouldn't allow it.
He kept shooting and trying to judge the dirt being kicked up on where it was hitting. Finally, he walked up to the 10 yard mark and shot the rifle at the target...
Bullets were hitting sideways. I told him that meant that something was seriously wrong with the barrel. Said the bullets must be really undersized for the bore. He looked at his box of very expensive Federal Match ammo and realized that he had been shooting 6.5 Creedmoor ammo in a .308 rifle. He was not happy.
He cleaned out the barrel and loaded the proper ammo, then shot this sub half MOA group at 100 yards, which blew away my best group of 7/8"...
The spent casings were fire-formed pretty well to the .308 size on the left...