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Old August 26, 2011, 11:26 AM   #1
Crazy Carl
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.41Mag data for 2400 & cast bullets?

I'm finding it almost impossible to find data for the .41, using 2400 & cast bullets. Lyman 49, Speer 13 & Lee's Modern Reloading 2 have zero data for 2400, pushing a 21/215/220 hard cast.

The "One Book/One Caliber" for the .41 has data for Lyman's 212, 215 & 220 bullets, but.... I'm using Dardas' 215gr LSWC. Should I use the 215 data, or? I ask, because the 212 lists 1.586" OAL, the 215 at 1.575" & the 220 at 1.700".

Should I load a dummy round & measure the OAL? If so, how would I know to adjust the charge for the different OAL?

Should I just start with the minimum charge for the bullet weight & go from there?

I'm not trying to load some barn burner, screamer load, but just an effective whitetail load for shots out to 25yds (very thick brush/cover, where we hunt) with a 5.5" Bisley Blackhawk.

I'm new to reloading & don't want to screw this up.

Thanks!
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Old August 26, 2011, 11:39 AM   #2
Unclenick
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Well, that's just crazy, Carl. The Lyman #46 has data, though. 215 grain 410610 with 14.2 grains to start and 18.8 grains maximum. That bullet is in Linotype (hard) so you may want to stay near the lower end with a more typical commercial alloy, or work up slowly while watching for excessive leading and any kind of pressure sign.

I'm guessing they pulled the data from #49 because they discontinued the molds, but I haven't looked that up to verify it.

Another trick you can use is to take jacketed bullet data for the same shape and seating depth bullet, and knock it down 10% at both ends of the load range. That usually puts you in safe turf and is the strategy published by Ranier for their plated bullets, which they say should use lead bullet data.
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Old August 26, 2011, 12:53 PM   #3
243winxb
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41 Magnum-Alliant 2400 Powder-215 gr Cast Bullet.

The OAL will be set by crimping into the crimp groove. Then use the starting load of 14.0gr-2400 and work up to where accuracy is good. Lyman #45 lists a Maximum of 18.8gr. As already said above.
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Old August 26, 2011, 08:24 PM   #4
crowbeaner
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RCBS 41-210-KT sized .410", CCI 300, 19.0 of 2400, crimp tightly.
Lyman 410032, sized .410", same primer, same charge.
Lyman 410459,sized .410" same primer, 18.0 of 2400.
Use a 40 caliber expander button to insure tight neck tension; crimp tightly in the crimp groove. Before you load a bunch of 410459s, check the OAL in your gun. You might have to crimp this bullet over the front driving band if you have a short cylinder. Hope this helps. CB.
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Old August 26, 2011, 09:29 PM   #5
Nevmavrick
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Using either an RCBS 41210KB cast of linotype or a Lyman 410610 cast of WW+2% tin with Lyman GCs sized to .412", I put 18.3gr to 19.2gr of Alliant 2400 over a CCI300 (or Federal 150s) into my M57 6". I'll use it for anything a .41 can be used on.
I've put a "few" RCBS 210s downrange sized .410" with up to 20.0gr from the M57, and an M58 (4"). When I carried a RBH 4 5/8", that same bullet was used as a hiking pistol. I was in SE Alaska at that time.
The .412" bullet is more accurate in my guns, but as you're using "factory" bullets, I presume you don't cast.
I don't like the BB bullets, and the molds I have with them, have them removed. You prolly won't have any special problems with them as you are loading them up. Factory bullets may give a little difficulty, with .410 sizing and BBs, when loaded down...say under 1000-900fps.
Have fun,
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Old August 26, 2011, 10:43 PM   #6
Crazy Carl
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Thanks, fellas. Much appreciated!
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