.41 mag loads using Unique or Trail Boss

[Agent Smith]

Just wondering if anyone has some load data for the .41 Mag, using either Unique or Trail Boss, with a 215 gr lead semi-wadcutter.

Thanks

 

[C.S.63]

I do not have any pet loads for the 41 but below is some info from there web page. I use Trailboss for the 44 special and have had nice results near the top recommended load but I worked up to it, Plenty of info for unique on the board and web, remember to cross reference back to a manual just to insure of crazy typos, hope this helps a bit

IMR has good info for the 215 cast Lead Flat point

4.5-6.5 of trail boss

 

[RalphK22]

I use 8 grains of Unique with a 215 grain SWC.

 

[Erich]

9.2 grains of Unique, Remington cases, CCI large magnum primer, 215-gr LSWC hardcasts of any type, moderate roll crimp - my longtime all-the-time .41 Mag load. Gives mid-1100-fps-range velocities from a 4" gun, and is very accurate (Hey, it's a .41!

)

6.5 grains Trail Boss, CCI cases, CCI large standard primer, any 215-gr LSWCs, moderate roll crimp - POWDER PUFF for the .41! My Gina loves shooting this. I would note that it was one of the least accurate .41 loads I've ever rolled, but that just means that it shot like a .45 Glock so it's no problem. Velocities around 860 fps from the 4" gun, deviation around 15 fps.

 

[ArchAngelCD]

From the Lyman Cast Bullet Handbook 4th Edition, page 267:

RCBS #41-210 SWC
Unique - 8.5gr to 9.5gr

Saeco (Redding) #418 220gr RNFP
Unique - 8.1gr to 9.1gr

I would guess using a 215gr SWC your numbers would be 8.3gr to 9.3gr Unique...

The Hodgdon Load Data Site reports a charge range of 4.5gr to 6.5gr Trail Boss under a 215gr LSWC bullet.

 

[kennyb]

i'm a unique fan as well for 41 mag (great gun) i vary between 7.0-10.0

 

[427mach1]

I don't use the cast 215 grain bullets but I do load the 210 grain Berry Bullets with 9.7 grains of Unique. I get right at 1200 fps, which is the max recommended for plated bullets. It is a very pleasant, low-recoil load.

 

[Jellybean]

I use 8 grains of Unique with a 215 grain SWC.

I use Unique for my mid-range (aka combat) .41 loads and 8 grains is the magic number for all my 210-220 grain SWCs and also for my 208 gr. wadcutter.

As for the Trail Boss, I have no use for it and want nothing to do with it. I prefer Bullseye for my light loads as it's much more versatile and much more accurate.

 

[SuperMan]

8.0 grains of Unique is what I have been using since the 1970s...950+- fps depending on what bullet one uses. Yesterday I tried 8.0 with a 260 Keith from a custom Lee mould and they shot excellent.

1983...Keith bullet from Lineotype...25 yards DA...

2004...210 Berry's plated....50' DA

2011..230 Keith by Leadhead Bullets...20 yards DA

8.0...it is magic in a .41...Bob

 

[max]

My standard for years has been a cast swc (210-220) and 7.0 of Unique.