Several years ago I found at the local gun shop a like new Herter's 401 Power Mag! The price was right and it came with a set of RCBS dies so decided to pick it up! Let me tell you, this thing will shoot. Me and the boys in the area have a freindly informal shoot once a month and we shoot alittle mid range ( 125 yrds) pistol competition! They all shoot mostly 44 mags, also a few 45 long colts and a 454 casull! The 401 isn't the biggest or the fastest but I usually do very well. So well in fact the guys started giving me a hard time when I'd bring it! So I had a Ruger 3 screw blackhawk in 357 rechambered to 401 in the hopes of being able to sneak it into a match! Same #### thing, this gun also shot extremely well. I have limited 401 brass so I make mine from 41 mag brass. The 41 brass is swaged down in the 401 resizing die then a small amount of brass needs to be turned off with a lath near the rim! Case length for the 401 is 1.29 where the 41 mag is 1.28. My favorite load is 16.5 grs of 2400 under a 260 gr cast bullet for a 40-82 winchester! Basically It's a super 38-40 or a 40 mag take your pick. Where everyone else is going to these 454 and larger hand cannons, Iv'e decided to go on a road less traveled, and when my buddies all pull on there little shooting gloves that help the recoil or put there howitzer down because the pain isn't fun after a few rounds I'll still be shooting with a big grin on my face. Now all's I need is to chamber a Marlin 94 up and try it out in a rifle!