Loads for 260 grains in the .41 Remington Magnum

[Elric]

A while back I snagged an RCBS SO 41-260-FN PB bullet mold. Love it. BUT... got to load for it. I have a 41 Mag 23" barrel Contender waiting for cast bullet lovin' and this 260 grainer might be of interest.

Things to choose from: Red Dot, Unique, 2400, Lil Gun, I4227, Bullseye, AA1680, and a few others.

Hoped for velocities in the 1600 range.

Waiting on BACO to turn-out a .411 H&I die, when I get that in my trembling hands there is a 412263 that I'd love to jerk the handle a few times on. 288gr (nominal) in the Contender... I do have my PTG .414 Supermag reamer on-hand for further mathification, but that will have to wait.

 

[Chris Sparkman]

Hodgdon has data for 4227 that I use for a Mihec 265 gr gc bullet in my Bisleys. I find it to be a very accurate load. I size to .412

 

[JonB]

I have a Ranch Dog TLC-411-255-RF that drops 'em at 260gr with 50-50 alloy.
For my Marlin 1894s, I like 15.0 gr of 2400, and I might add, my lightweight carbine kicks pretty good with that load especially for a pistol caliber in a Rifle

Somewhere I found the following MAX loads (maybe RanchDogs website?) and penciled them into my notebook, each had estimated velocity of 1500 to 1600fps.
15.5gr of 2400
19.5gr of H110
disclaimer: I wouldn't use these loads in short barreled handguns...or any handguns

 

[fiver]

I'm thinking H-110 is in your future.
I could get a 240 and a 255 up to 1600 easily enough in my 24" barrels but with the 44 mag/45colt. [using 2400]
I don't know if the 41 has the capacity to get anything that heavy up to that speed but if it does then H-110 is about the maximum gas maker your gonna cram in there.
1680 is just slow enough to be reserved for the super magnum cases.

 

[Rick]

N-110 is your friend in the 41 mag. 10 inch FA revolver, 244 gr Lead Heads commercial cast, 19.5 gr N-110, CCI 200 @ 1527 fps. 10 shot chrono test with an extreme spread of 20 fps. One of the most accurate loads I've ever fired from a revolver with repeatable 1 1/2 inch groups at 150 meters (12X Burris, scoped from the bench).

Your 1680 may shoot well for you but will most likely be below your goal of 1600 fps. It worked fairly well for me in a 357 mag revolver test with heavy for caliber bullets (190 gr) but was below my velocity goal.
.

 

[Elric]

Not getting ahead of myself. Think of the .405 Winchester case... Now whatcha gonna do with less than screaming max loads with all that extra case?

BUT... this is a real Lūb Monkey exclusive! The .414 Savage! Think of a .375 Winchester (.375-ish bullet and 2" case) BUT for the .410 bullet....

.41 Mag - 1.290
.414 SM - 1.600"
.414 S&W - 1.800" (akin to the .460 S&W caselength)
.414 Savage - 2.000" (akin to the .375 Win caselength, probably max length of 303 Savage opened up)
.405 Win - 2.580"

Look up the .303 Savage, which is the parent case of the .414SM and go to your happy place.... Take .303 Savage brass, anneal the neck and shoulder, then open it up to .35, then .41

How much case do we need?

 

[fiver]

when you combine volume with pressure then things really take off.
unfortunately you get to a point where you need to change over from blunt points to rifle shaped projectiles to take advantage of the speed.