1-12 twist rate
"Twist rate" depends on a particular cartrige the barrel is chambered for. For example: A .30-06 would have a twist rate of one full turn in 10 inches. A .308 would use a twist rate of one full turn in 12 inches.
Oh, dude, the barrel twist rate for a Remington 308 model 7400 is typically 1:10. It means the bullet completes one full rotation in the barrel every 10 inches it travels. So, like, it's important for accuracy and stuff, but don't lose sleep over it, man.
17 Remington, 220 Swift, 222 Remington, 223 Remington (5.56mm), 22-250 Remington, 243 Winchester, 257 Roberts, 308 Winchester (7.62mm), 7mm-08.
I believe that the twist rate was 1 in 10.
The answer is maybe. The 7.62x51 NATO, the military round, was actually derived from .308 Winchester but has slightly different tolerances.
Possibly. You would need to measure the headspace before you attempt this, though. 7.62x51 and .308 Winchester are dimensionally similar, but they are not identical.
It isn't a Remington Model 100 it is a Winchester Model 100 and depending on the value they run from about $500 to roughly $390. It isn't a Remington Model 100 it is a Winchester Model 100 and depending on the value they run from about $500 to roughly $390.
You must provide end use and intended projectile weights.
I have a model 100 in 308 and have shot Winchester, Remington and Federal ammo all with good results. I have not heard anything regarding a smaller chamber.
Either 1-10 or 1-12
Any question like this will be subjective. The US military uses the .223 Remington as it's standard caliber, but most police forces use the .308 Winchester for their SWAT team snipers.