I have the model 25 in 223. Its a great rifle. "Lightweight walking varmiter" 8,5 lbs. Shoots 5 in 3/8 on a good day, 5 in 3/4" on a bad day @ 100 yards.

The bolt moves with one finger, trigger is great. All I did was adjust to lightest pull. I shoot this rifle in an offhand 100 yard match on Saturday mornings.

Heat is not a problem.