.41 Mag Load Data

[GypsmJim]

I target shoot with my own cast lead 175 gr. SWC boolits and Unique. Excellent results. I also use Unique with all of my other magnum cartridges. Unique has been hard to find, but I did acquire a good supply of W231 / HP38, and have worked up loads for all of my other revolvers that use Unique. My issue is that I cannot find any data for 175 gr. boolits in a .41.

Any suggestions?

[Texas by God]

Use the data for the 210gr bullet and work it up, if needed. A 175 gr bullet would be handy for daily use in the .41 magnum. I've been looking for an old Lee 175gr .41 AE bullet mould, but no luck so far.

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[RJM52]

I use 7.0/231 with 210s and 8.0 with 200 and lighter.... 210s run around 900 and the lighter ones upper 900s depending on the weight.

[black mamba]

For target loads which run at lower than max pressures anyway, 1.0 gr less of 231 than Unique will produce excellent loads.

[GypsmJim]

1.0 grain less was going to be my starting point.

The Lee 175 .41 AE mold is what I have. Been using it for over 25 years now.

Thanks to all for their comments.

[Cosmic_Charlie]

Those 41's are hard to come by these days. Strange that Ruger does not resurrect the cartridge. Freedom Arms, but three grand?

[Larry Gibson]

In my Ruger Bisley with 7 1/2" barrel the Old Lee TL410-175-SWC seated and very mildly roll crimped in the top lube groove runs 925 fps with excellent accuracy over 5 gr of Bullseye.

[Rodfac]

In my Ruger 4-5/8" bbl'd BH 3-screw, 6.7 to 7.0 gr of Win 231 or HP-38 gives me 1-1/2" to 2" gps at 25 yd from rest. Bullet is the RCBS 41-215, or Lyman's 410459 sized to 0.411", ACWW alloy & 50-50 lube. While these are heavier, similar loads with a lighter bullet would be safe in any .41 Mag. BTW, 6.7 gr gives me 966 fps with an ES of 33 over my chrono & are my everyday loads in the gun mentioned as well as a 6" M57 Smith & a Ruger NM Flat Top with a 6-1/2" bbl.

Best Regards, Rod

[GypsmJim]

H110, 2400, Bullseye and 210 grain boolits don't meet the thread's requirements.

[Larry Gibson]

You didn't say what 175 gr bullet?.

221/BP38 are close to Bullseye in burn rate and charge weight. Try 5 gr and tweak +/- to suit your wants.....

[GypsmJim]

You didn't say what 175 gr bullet?.

221/BP38 are close to Bullseye in burn rate and charge weight. Try 5 gr and tweak +/- to suit your wants.....

I did - see post #5.

I used Bullseye eons ago at a 6.5 grain charge, so 5.0 would be quite mild. 6.3 would be a previous poster's suggestion, so maybe I'll try half way in between.

[Larry Gibson]

Why not try 5 gr, half way in between and 6.3 gr?