While not as common as .45 and .44-40 in this area, the .38-40 is still very well represented. Those that have 'em love 'em. They have enough
power for knockdown targets, yet recoil is low enough to allow fast target re-acquisition. Many old timers liked the .38-40 because it "shot hard". If I sound enthusiastic about this caliber, I am! I have 3 rifles chambered for it and 3 revolvers. I use black powder, Cleanshot, W-231, and HP-38
in this caliber and they all perform well. I think Winchester-Western
used to sell a hotter load for use in 1892 Winchester rifles only.
I have read old accounts which stated that in the '73 Winchester, the .38-40 was considered adequate for deer to 200 yds.
Regards,
J D