Mine is a Model 70 Deluxe with a 22" barrel. Haven't tried 40 grain but it gets 4190 fps with 35 gn Ballistic Tips and 3600 with 50 gn Ballistic tips.
I have some 55 grain factory loads in a yellow box with a $3.80 price tag. The velocity printed on the box is 3650 fps but the chronograph says 3380.
The factory ammunition was very accurate and splattered ground squirrels in a most spectacular way. I once met a coyote hunter who searched the state
for this ammo because it would not exit a coyote.
Cheers,
Walt
