Anybody load the old Lee 41-240 swc for 41 mag?

[Sweetpea]

Going to start working up a load.

Weight is right around 250 grains.

Of course there is no reliable data for this boolit that I can find, so looking on IMR's website, it shows a starting load of 17.4 gn of W296.

My question is, there is an awful lot of boolit inside the case, do I drop back from that data much to start?

Any help would be appreciated.

Thanks, Brandon

[x101airborne]

From what I remember, do not reduce H-110 / 296 loads. Double check me as I am going off of memory. I load a LFN design 240 grain 41 cal boolit over 12 grains unique and it is all i want. Lets say, it is tangy like my heavy 44 mag loads. Good luck!

[littlejack]

Sweetpea, go to the Handloads.com site. At the top of the page you will see "Load Data" Click on it. Now you can look up the .41 Magnum loads that have been posted. Remember, "Use caution with these loads". Thay have been posted by shooters from all over the place, and you must use discression when getting/using data off of the internet.
I have stoaked my Model 57 up with the 265 grain gc boolit from Laser Cast. I used a heavy dose of
H110. I do like the H110, as it seems to burn more efficiently with the heavier boolits, and one can get
the max out of his magnum
Reguards
Jack

[NickB1075]

H-110 and 296(same powder) do not work well with light or low loads. I have been using 296 in my S&W model 657 for a while now and it really likes stout loads. I don't know about that exact bullet but I put 21 grains behind some older 225 that I found at a yard sale. This load was fine in my revolver with no high pressure signs but as always exercise caution. But when I started I reduced 10% from the minimum load for 210's and worked up (thats how i found out that H110/296 doesn't work well with low charges). That may be your best bet to find a good charge.

[Sweetpea]

Anybody else?

[GLynn41]

i had one of those molds and wore it out-- used 18 gr of 296-- same load was also used with the ssk 280 gr and it has more in the case -for either bullet 18 was plenty -- used it in blackhawks and a 6" DWA and a * 3/8s S&W-- start low and see where you can go

[9.3X62AL]

H-110/WW-296 likes things best with magnum priming and somewhere between 90%-100% loading density. I've used the Lee 240 only in a Ruger Blackhawk x 6.5", and extrapolated loads from 210 grain cast data minus 15% to start. This process caused no grief in the BH. 210s shot better in that revolver, and at moderate velocities you can "run out of front sight" with these heavier castings. I'll get around to trying the 240s in the 657 x 6" one of these days.

[Tatume]

Anybody else?

I recommend the Hodgdon web site and their data for 245 and 250 gr cast bullets: http://hodgdon.com/ Getting load data from individuals on the Internet is unreliable and dangereous. It is far better to substitute a different cast bullet of the same weight in reliable, pressure tested data.

Take care, Tom

[Tatume]

I just returned from the range where I was shooting 240 gr LBT WFN GC bullets loaded for three 41 Rem Mag revolvers (S&W M57 Mountain Gun, FA M97, Ruger BH, all ca. 4”). The average speed was 1100 fps, using Alliant Unique ( http://www.alliantpowder.com/ ). I consider this to be a maximum load with this powder. There are no Alliant data for 41 Rem Mag using cast bullets, so I have to develop my own loads. I start with minimum loads for the heaviest bullet for which data are published and work up. A chronograph is essential for developing loading data.

Next, I will develop loads using reliable published data with H110 ( http://hodgdon.com/ ) and Accurate #9 ( http://www.accuratepowder.com/ ). I expect 1300 fps, but we'll see what we see. The point here is, with judicious experimentation you can develop safe, accurate loads.

Take care, Tom

[countryroads]

Anybody else?

I load the Lee 410-210SWC bullet (it weighs 211.5 grains as cast from my wheel weights) with 11.8 grains of AA #5 for my Ruger NM Blackhawk. No signs of high pressure. MV is 1248 fps.

[big dale]

I have not loaded for the 41 mag for a couple of decades now, but I used to have a blackhawk that just loved that boolit. H110 was not my favorite powder to use in it. I shot it much more with a mild load of Herco of between 9 and 10 grains. I liked buying 8 pound kegs of that stuff. For hotter loads my old blackhawk prefered 4227 or 2400. I always prefered to start low and work up and back off when the accuracy got worse or the recoil got to be more than I found comfortable. My blackhawk had the short barrell so it could kick more than a Super Blackhawk did.

Have fun with this stuff.

Big Dale

[9.3X62AL]

Tatume makes some wise counsel in his posts. Just don't be in a hot rush to achieve max velocity while "stair-stepping" powder amounts in test series of this type. Rome wasn't built in a day, after all.

[Good Cheer]

Used the Lee 240SWC with 2400, 296, 4227 in the single action Ruger. As stated above I ran out of front sight.
Tried seating out the bullet to take advantage of the cylinder length. Hurt my trigger finger so bad I couldn't shoot for half a year.:roll: