Just chronoed some of my first RL 17 loads from my Ruger Alaskan w/ 20" barrel.

270 gr Hornady bullets:

80.0 gr Rl 17...2654 fps
81.0 ""........2700 fps
82.0 ""........2734 fps
83.0 ""........2763 fps
84.0 ""........2809 fps

All spent cartridges looked similar...flattened primers, but no other apparrent pressure signs. Bolt lift did not seem heavy.

Base measurements were 0.532" for the lower four loads and 0.533" for the top load. Recoil is tolerable, but would not care to shoot more than a dozen rounds at any one sitting.

Temp was in the mid 40's. Rl 17 is supposed to be temp stable, but I would back these loads down for warmer weather shooting.