Dave
After seeing your post I recalled loading some rounds last fall to run over the chrono,never got to it.Fired from my Model 1900 by WR,with 22" barrel,_results.

160 gr.Hornady RN
Privi brass,Fed 210 primer
34.3 grains RL-15
Velocity 2256 to 2267 fps
No pressure signs

140 grain Nosler Partitions,(old lathe turned model)
Privi brass,Fed. 210
35.3 grains RL-15
Veloscity 2402 to 2411 fps
No pressure signs but shoots about 2" higher than 160 Hornadys at 100 yards.
Fun little rifles,enjoy.