The original IZH94 from EAA/Baikal was 1/12. http://www.predatormastersforums.com/baikal.html One could surmise that the SPR94 is the same.
You will have to measure it. Hammer-forged barrels made by Baikal can have quite a bit of variation in the rate of twist. I have a Baikal .243 that was supposed to have 1:10. I measured it, and it is actually 1:8.6!!
It will vary with caliber.
Contact Remington on their web site. Your question is impossible to answer without the caliber of the rifle
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).
1 in 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
6mm Remington twist rate is 1 in 9, 244 Remington twist rate is 1 in 12. The 1 in 12 twist will not stabilize long 100 grain bullets while the 1 in 9 twist will.When the the caliber .224 Remington's name was changed to 6mm Remington, the twist rate was changed.
Standard factory 222 Remington ADL has a 1/14 twist rate.
The twist rate is 14"
You will have to call Remington with the serial number.
The Remington 7600 typically features a barrel twist rate of 1:10 inches for its .30-06 and .308 caliber models, which is designed to stabilize the bullet for accurate shooting. This twist rate allows for optimal performance with a variety of bullet weights commonly used in these calibers. However, it's important to check the specific model and caliber, as variations may exist. Overall, the twist rate contributes significantly to the rifle's accuracy and effectiveness.
The rate of twist for a Remington 788 in .243cal is 1 in 9 which is one complete turn of the bullet in nine inches