Originally Posted by RJM
Was just looking at some chronograph data that I have for the .41 Magnum after looking at the thread on the 10mm vs. .44 Magnum for bear defense....

The 10mm from a 5" barrel is about the same size and over all barrel and chamber length of a S&W N-frame 4" revlver which is what most people would carry for bear defense... I use the .41 Magnum as it is just easier for me to control in a 4" than the .44....

Sectional Density wise:

.401/200 grains/.178
.410/210 grains/.178
.429/225 grains/.174

.401/220 grains/.195
.410/230 grains/.195
.419/250 grains/.194

Don't have any chronograph information on .44 Magnum from a 4" but have lots from a 4" Model 57 .41 Magnum...

Speer Gold Dot 210 grain.......1185
Federal Fusion 210 grain........1280
Federal Classic 210 grain........1266
Remington 210 SP....................1247
Winchester 240 PT....................1166

Have not chronographed either of the 10mm loads in question but have loaded a Montana Bullet Company 200 grain Hard Cast with 8.6 grains of Longshot that is running 1210 fps from RIA 4.25" barrel and 1260 from a 6" PARA Hunter.

Dick has shot the length of a moose with a 230 grain .41 Magnum with a MV of about 1200 fps... Is there going to be any difference between it and a 220 10mm going the same speed...I think not....

Bob


One of the 10mm pistols I shoot is a long slide Glock 20 (from way before there was a G40), which is a lot closer to the size of that 4" N-frame revolver. (Lay them on top of each other, most guys are surprised how much bigger the revolver really is.) In that G20L, I settled on these as my best full power loads:

Mihec (shallow HP) 200gr - 1350 fps
Mountain Molds custom WFN 220gr - 1300 fps
Mihec 41-220-WFN (sized .401") - 1250 fps

Both of those use AA9 and brass is reloadable as many times as I want with no smiles. Using Blue Dot or Longshot for either load is too hot at that velocity, but they can get within ~50 fps.

For me, that long slide G20 is easier to shoot quickly and accurately than a 4" 41 Magnum, and carries about the same. That was an easy switch for me.

Last edited by Yondering; 03/08/19.