depends on the rifle old M16s used to have 1:12 this was designed to stabilize 55gr projectiles in arctic conditions, or regular conditions for that matter. Now-a-days....were using heavier bullets. 55 and 69 grain projectiles. m193 and m855. The military commonly uses 1:7 twist rate. My RRA rifle has a 1:9 twist rate and I haven't found a bullet it wont stabilize. I have shot 75 gr. (too big to feed from the mag) and a 40 gr v-max. I dont want to go heavier or lighter...so 1:9 is perfect for me.
The Springfield 1903 has a 1" in 10" twist rate. The later M1 service rifle also has a 1" in 10" twist rate.
1:16
It will vary with caliber.
The "rate of twist on rifling" is caliber specific. To give you an answer we would need to know which cartridge the rifle is chambered for.
1/10
1/10
Them twist rate of a Winchester model 70 rifle in .223 Rem.is 1"in 9".
1 in 16"
Your Winchester model 70 bolt action rifle that is chambered in .300 Win Mag,has a twist rate of 1 in 10.
The Remington Model 66 is chambered for the .22 long rifle cartridge. The most common twist rate for the .22 long rifle is one full turn in sixteen inches (1:16).
The standard rate of twist for a .22LR firearm is 1 turn in 16 inches. I don't know why a Remington 541 target rifle would be any different than 1:16
This rifle was built by Mossberg and was labeled the 800B. The "B" series was sold thru Montgomery Wards and other large reatilers. All Mossberg model 800 .243 rifles manufactured had a twist rate of 1 in 10. So I believe it is safe to the twist rate is 1 in 10.