.41 magnum and 250 grain WLNPB

[Heavy lead]

I have searched high, low, deep and wide in some 14 manuels I have, and all over the internet for this combination with 2400, rather than just start and extrapolate and wing it, I'd rather have some data, but I'm throwing this out to find out if anyone has used this combination, not looking to set a world speed record, just like 2400 and want to work a load with this new boolit I have. Now this is not a LBT, I only put WLN to give an idea what the boolit looks like. I designed it on MM website and had him cut it with a .420 long 80% meplat with a .1 front band, .9 middle band and a .11 base drive band. The weight of the boolit lubed and sized with BAC is right at 250-251 grains, the crimp groove back is almost identical to my NEI 220 Keith that casts at 230, so my case capacity is identical.
Anyone have any thoughts or experience with this combo, or should I just stick 296 in it and forget it. I really want a load with a little less commotion than a full bore 296 load though.

[Blammer]

Here is my results with a bit heavier boolit.

http://castboolits.gunloads.com/showthread.php?t=80838

[Three44s]

From my Hodgon's #26:

It lists H4227 ........

Start = 19.0 gr. @ 1186 fps and Max = 20.0 gr. @ 1255 fps

And H110 ........

Start = 19.0 gr. @ 1254 fps and Max = 20.5 gr. @ 1342 fps

No other powders listed for 250 lead in that manual.


Accurate Arms #1 lists AA # 9 behind 240 lead at 15.5 gr start for 1305 fps and 17.2 gr Max for 1483 fps

AA #9 would be more flexible than H110 and it's seems overlooked for the performance it yields.

(With 2400, I stick with Keith's idea on using standard primers to keep peak pressures more in check.)

I switch to magnum primers on somewhat lighter charges to maintain accuracy.

Three 44s

[Timmer]

A year ago I purchased a mold from Veral Smith for my .41 magnum Marlin 1984 lever action rifle. The mold casts a bullet that weights 245 grains and it does not have the gas check design instead it is a plain base bullet. I am using Alliant 2400, powder charge is 14.5 grains, with a Winchester large rifle primer. The OAL is 1.580 inches. So far I am shooting 5/8" at 50 yards for 5 shots from the benchrest. And according to my testing over the long holiday weekend, I am placing 3 shots into 1 1/2" at 100 yards. Again from the benchrest. The groups tend to string left to right so I am thinking it is my hand hold that is causing the stringing. Time between shots is about 2 minutes. This reload is not the fastest but the more acuate according to my testing using Alliant 2400. Have Fun developing a NEW load for your firearm.

[Heavy lead]

Thanks for the replies, I read through the thread from Blammer and used a start load of 12.5 2400 with a RP 2.5 primer, half grain at a time worked up to 15.5 chronographed at 1130, nice easy shooting load and the 2400 became clean at 15 grains, so I'm thinking I hit a sweet spot with it, might run it to 16 to see if I can do better with as good as accuracy, only shot it at 25 yards today, I'll stretch it out next weekend to 50, all my 41's are open sighted, so I'll probably not shoot past that, not me, not with open sights.

[giz189]

Heavy Lead, I have a copy of an older Lyman Cast Bullet Handbook, circ 1973 and in it is listed a 240 grain bullet cast of #2 alloy with starting load of 14.0 grs 2400 to a max compressed load of 20 grs of 2400. Might help some. Bullet # 410426

[fourarmed]

I am using a 280 gr. LBT LFNGC boolit cut to take .416 checks. I am loading with H-110. I find that if I go faster than about 1250 in my Dan Wesson, I start to notice stiffer extraction, so I have set that as my working maximum. It takes varying amounts of H-110 to get there with different primers. I seemed to get best accuracy with WLP primers compared to Fed 150 and 155 and CCI 350.

[canyon-ghost]

I've been working up loads with 2400 and a 220 grain Keith mold. At 14.3 grains it begins to get serious in my Contender and ranges all the way up to 15.7 grains. The 15.7 grains is supposed to be a starting load but, I havent tried anything stouter in the TC. My Blackhawk consequently loves this load, and it will make 100 yards easy.
Ron