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336A
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Posted: March 03 2012 at 9:45am | IP Logged Quote 336A

I have been trying to find some data for some time now for my .41 mag and commercial 215gr SWCBB bullets. For the most part I've come up empty handed. I have a good supply of these bullets and want to brew up some full power hunting loads.

I know that cast bullets generate less pressure than their jacketed brethren when all else is equal. Knowing this I weighed some of my bullets and instead of being 215gr they are weighing in right around 210gr instead.

The next thing I did was to do a side by side comparison of the 215gr SWC and a Sierra 210gr JHC. I found that the cast bullets' crimp groove is slightly lower than the Sierra bullet, so the cast bullet takes up slightly less case capacity, though it's not much.

So here is my question, is it safe to use Sierra's load data for 2400 and substitute their JHC bullet with the cast SWC?

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davemuzz
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Posted: March 03 2012 at 1:38pm | IP Logged Quote davemuzz

366A,

This doesn't answer your question directly.....but I just yesterday received my April 2012 edition of Handloader magazine. They have a small "spread" on loading for the .41 Magnum.

So...here's what they printed on loading for the RCBS 41-210-SWC (Lead mold of course):

15.0gr. 2400, NO CRIMP, 1,089 fps
18.5gr. 2400, NO CRIMP, 1,294 fps

15.0gr. 2400, HEAVY CRIMP, 1,102fps
18.5gr. 2400, HEAVY CRIMP, 1,282fps

The article's author gave some blurb about why he wanted to shoot a few loads with the "no crimp", but then also stated the magnum loads should always have a heavy crimp.

Yeah...go figure.

Anyway, I'd feel pretty confident using this load data. But compare it to the jacketed load data you have. I would just take a guess and figure the jacketed data may be a bit higher???

I hope this helps.

Dave

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336A
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Posted: March 03 2012 at 1:46pm | IP Logged Quote 336A

Yes I have that issue of Handloader. The commercial bullets I have compare in the same way as the RCBS .41 bullet with the Sierra in that article, except of course mine is a bevel base. The jacketed data that I have shows a MAX load as being 19gr of 2400.

Edited by 336A on March 03 2012 at 1:48pm


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twillis
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Posted: March 05 2012 at 10:45am | IP Logged Quote twillis

I have used 18.0 grs of AA#9 or 19 grs of 2400 with any 210 Jacketed and 215 - 230 gr cast SWC without issue. Cases are Rem or Win and the primer is WLP. I have shot this load in a Taurus Tracker (not the 230 gr bullet), 2 different Ruger Redhawks, a Ruger Blackhawk and a S&W 657. Recoil was stout in the Tracker, manageable in the Blackhawk and of little consequence in the Redhawks and Smith.

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336A
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Posted: March 08 2012 at 2:37pm | IP Logged Quote 336A

Thanks twillis, I just ordered some H&G #258 .411" bullets from Montana Bullet Works. I plan on doing a load work up to 19gr of 2400, will be using them strictly for hunting purposes.

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Posted: March 08 2012 at 4:05pm | IP Logged Quote Ranch 13

I find that 18.5 grs of 240 with 215-220 gr cast swc works rather well in velocity and accuracy from my Blackhawk.
For a mild but still plenty of punch and lots of accuracy load look at 8 grs of unique with your cast bullet.

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Vines986889
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Posted: March 21 2012 at 5:34pm | IP Logged Quote Vines986889


I know that cast bullets generate less pressure than their jacketed brethren when all else is equal. Knowing this I weighed some of my bullets and instead of being 215gr they are weighing in right around 210gr instead.
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336A
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Posted: March 22 2012 at 11:14am | IP Logged Quote 336A

Vines986889 wrote:

I know that cast bullets generate less pressure than their jacketed brethren when all else is equal. Knowing this I weighed some of my bullets and instead of being 215gr they are weighing in right around 210gr instead.


I weighed some of my 215gr SWC a few weeks back and came up with same results you did.

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336A
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Posted: April 01 2012 at 12:58pm | IP Logged Quote 336A

I finally got to the range today to try out my 220gr Montana Bullet Works bullets. I had 5 rounds each with 18.5gr and 19.0gr of 2400. The 18.5gr load was pretty stout to say the least, the 19.0gr load was more of a WHOA MOMMA Recoil with that load is all I ever care to endure to be sure. Both loads were very accurate at 10yd considering my meager skill, the 19.0gr charge was a bit tighter but not much cases ejected with ease and there was no signs of excessive pressure. I plan on sticking with the 18.5gr load however as it and my 8.5gr Unique share the same point of impact. The 19.0gr load was about an inch or so below point of aim.

I also experimented by shooting some 215gr SWC bullets with 8.5gr of Unique with out LLA being applied. I had more leading than I expected so I'm going to continue lubing bulk commercial cast bullets with the stuff. I also have some 230gr Keith bullets on the way from Dry Creek can't wait to give them a whirl next I'm not planning running those to full throtle however. I'm going to see how they like 8.0gr - 8.5gr of Unique.

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