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zombie
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Posted: May 23 2010 at 4:14am | IP Logged Quote zombie

I'm ready to reload and shoot some 357 magnum for the first time, I'm somewhat confused about the load data I've come across! I have for components Alliant 2400 powder, CCI 550 mag primers and Berry's 158gr FP copper plated bullets.

Lyman 49th ed. manual has under 357 loads:
158gr Jacketed HP
2400 powder + magnum primer
11.3 start

but the database here has this entry:
158gr LSWC
2400 powder + standard primer
13.8 start

Which to go for? And should I use a similar light crimp as I do with my .38 spl reloads (same bullets)?

I also have Winchester standard pistol primers onhand as well.

Thanks for any info!

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Alias
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Posted: May 23 2010 at 4:55am | IP Logged Quote Alias

I have been reloading 357 mags for several years now and I am a big fan of H110. I am not a big fan of the Lyman reloading manual though at all. That being said.....the Lee manual starts at 13.9g with a max of 15.3g, the Speer manual starts at 13.8g with a max of 14.8g, Hornady starts at 10.5g with a max of 14.3g, and of course Lyman has a start of 12.0g with a max of 14.9g. Now, personally, I don't use 2400 but would like to give it a shot one day. If I was to reload with it I would start with a load of 14.0g and work my way up to what ever my gun liked best. I do know that alot of folks here use it and will have better info to give but i hope I helped a little.

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Ham Gunner
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Posted: May 23 2010 at 8:28am | IP Logged Quote Ham Gunner

Most of my 2400 loads in any caliber are closer to a max pressure load as it seems to get better accuracy with the higher pressure loads. Although it is not as finicky to pressure levels as 296/H110, it still does seem to perform a bit better after attaining a certain pressure level and the heavier weight bullets seem to help get the pressure up. I have not seen much need for magnum primers using 2400, although plenty of data charts show them being used. Like with 296/H110, a good firm crimp with any bullet would certainly help improve this powders's pressure deviations and therefore accruacy.

All copper plated bullets that I have experience with will do much better with a faster burning powder and slower velocities. Magnum level loads with the plated bullets do not normally work out so well and one should follow the manufacturers velocity level recommendations.

I would suggest using hard cast or jacketed bullets and not using copper plated bullets for magnum loads.

Edit: Welcome to Handloads.

Edited by Ham Gunner on May 23 2010 at 8:34am


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dwhite53
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Posted: May 23 2010 at 2:38pm | IP Logged Quote dwhite53

Plated bullets are usually not recommended for over 1200 fps. You'll blow the plating off of them and your accuracy will be horrible. Unique or Universal may be a better choice of powder as you'll have to down load 2400 to an inefficient level to keep your velocity below 1200 fps.

All the Best,
D. White
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nhblaze
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Posted: May 24 2010 at 8:32am | IP Logged Quote nhblaze

IMO

Think of plated bullets as a lead bullet
they are a soft lead, with a shiny finish

as compared to a jacketed bullet

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cpg
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Posted: May 25 2010 at 7:07am | IP Logged Quote cpg

Not Berry's Plated, but...
I put 12.2 gr of 2400 under a 158 JHP and was very happy with the results. < 2" groups at 20 yards using open sights and a bucket for a rest. Burn seemed fairly clean. I'm going to play around with heavier powder charges, but this was a very good (or lucky) start.

Also, I do not use magnum primers. I do put a very light crimp on the cartridge.

Contact Alliant via email with your component list and barrel length, they'll respond rather quickly with some data.

From one noob to another , welcome aboard.

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Rocky Raab
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Posted: May 25 2010 at 9:17am | IP Logged Quote Rocky Raab

Berry's says to use cast bullet data with their bullets. Ranier says to use jacketed data with their plated bullets - but cast data will work. Both say to stay under 1200 fps.

In my current tests, I'm shooting the Ranier 38 158 TC in 38 Special cases, crimping lightly just over the shoulder angle. (Crimping on the straight shank either buckles the case, cuts the plating, or isn't firm enough to hold against recoil.) I'm getting best accuracy at about 900 fps. Best loads so far use W231 or American Select.

BTW, Alliant now rather strongly recommends the use of standard primers ONLY with 2400.

Edited by Rocky Raab on May 25 2010 at 9:20am


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dwhite53
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Posted: May 25 2010 at 4:51pm | IP Logged Quote dwhite53

Rocky,

   Same method I use to crimp. Results in a pretty deep seating but I haven't had a problem with it.

All the Best,
D> White
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STCM(SW)
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Posted: May 25 2010 at 6:37pm | IP Logged Quote STCM(SW)

nhblaze wrote:
IMO

Think of plated bullets as a lead bullet
they are a soft lead, with a shiny finish

as compared to a jacketed bullet


My thoughts also......

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zombie
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Posted: May 25 2010 at 7:30pm | IP Logged Quote zombie

Thanks everyone for your suggestions! I just fired off 18 .357 rounds of the following load:

158g Berry FP copper plated bullets
12.6 2400 powder
CCI 550 magnum primer

All shot well out of a 4" GP100 I plan on trying it out on my 2" SP101 as well, should I stick with this load or should I change the primers from magnum to standard? I also have Bullseye powder, would that be more suitable than 2400 for a light 357 load?
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Rocky Raab
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Posted: May 26 2010 at 5:59am | IP Logged Quote Rocky Raab

I'd definitely go with standard primers, per Alliant's advice. Bullseye would work fine, with a much smaller charge, of course.

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Berry's MFG
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Posted: June 01 2010 at 10:27am | IP Logged Quote Berry's MFG

Great follow up info from all you guys! We do not recommend over 1200FPS
for the pistol calibers. Since we don't have a cannelure line you need to be
careful on the crimp. Too deep and you can damage the plating, not
enough and the bullet can back out under magnum loads. The plated
bullets are perfect for target loads, like Ham Gunner said, he would use
jacketed for mag loads.

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nhblaze
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Posted: June 02 2010 at 9:20am | IP Logged Quote nhblaze

zombie wrote:
Thanks everyone for your suggestions! I just fired off 18 .357 rounds of the following load:

158g Berry FP copper plated bullets
12.6 2400 powder
CCI 550 magnum primer

All shot well out of a 4" GP100 I plan on trying it out on my 2" SP101 as well, should I stick with this load or should I change the primers from magnum to standard? I also have Bullseye powder, would that be more suitable than 2400 for a light 357 load?



For the 2" barrel I would work up a load with the
faster burning Bullseye. IMO . With the short
barrel you will never get the maximum velocities
that 2400 and a long barrel could produce.

Try the 2400 load first and see if you get any
unburned powder, I have had people tell me they
get lots of residue from 2400 in short barrels.
This is one advantage of using the magnum primer,
even though you don't have to.

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zombie
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Posted: June 02 2010 at 2:42pm | IP Logged Quote zombie

Shot through about 50 rounds of my .357 reloads today, 25 each through my GP100 and SP101. There indeed was a lot of unburned powder left in the SP101 but none in the GP100! I will certainly try out Bullseye now.

Generally speaking, should I be using a faster powder for snub nose revolvers? I plan on reloading .44 spl for a Ruger SRH Alaskan 2.5" 44mag as well. Thanks for the tips!

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The_Shadow
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Posted: June 02 2010 at 3:32pm | IP Logged Quote The_Shadow

You might wish to try Alliant's Power Pistol powder, it has been benificial in some of my 10mm loadings with the shorter barreled G-29. A little goes a long way, good velocity and accuracy.

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gotsig?
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Posted: June 05 2010 at 7:06am | IP Logged Quote gotsig?

Can I hitch hike here....

I want to load some W-231 behind my Missouri 158g SWC's. I have loaded them in the past with 6.5g of Unique, but just want to use up some 231 I have.

I've perused my loading books (Hodgdon's, Lyman's and Speer)and the load data here- and 6.0g of W-231 seems to be a safe load. Anyone ever loaded with W-231 that can confirm 6.0g as a decent starting point?

I just received my Starline .357 cases from Midway after a three month backorder wait (these are the only cases I EVER bought so far). I'll be using CCI magnum primers, but have some Federal Match primers as well.
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Reloader06
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Posted: June 05 2010 at 9:28am | IP Logged Quote Reloader06

Sig

   I have very poor accuracy with Mag primers and 231. If you're loading 357 Mag, 6.0 sounds a bit high, but possible. I would start around 3.5 and work up from there. Maybe even lower. That's if these are for target/plinking. Hunting is a whole different thing. Then your 5.5-6.0 is hopefully were you get your best accuracy. Did I confuse you enough? Good shooting, work up, be safe.

Matt

Edited by Reloader06 on June 05 2010 at 9:30am


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dwhite53
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Posted: June 05 2010 at 10:39am | IP Logged Quote dwhite53

Zombie,

   Do yourself a favor and instead of running out and buying powder on the extreme opposite end of the burning rate spectrum, find yourself something mid-range like, 231, HP-38, Universal, AA#5, Silhouette, or Unique. Like Shadow said, Power-Pistol would be a good choice too.

These will allow you a lot more flexibility in loading. You'll have a powder that will do well in a broad spectrum of cartridges and loadings. Any of these will go from target 38 Special rounds to just below top-end 357 Magnum rounds. Any of these will work fairly well in a short barrel also.

All the Best,
D. White

Edited by dwhite53 on June 05 2010 at 10:40am
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gotsig?
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Posted: June 08 2010 at 7:05pm | IP Logged Quote gotsig?

4.5g of W-231 was a nice load. Shot two cylinders of 4.5g and 5.0g of W-231 along with my standard 6.5g Unique load and a few .38 SPL +P loads with 5.2g Unique.

Didn't matter what powder I shot.... all 6 rounds were nearly all touching each other.

4.5g of W-231 (0.900" group on bottom right) and 6.5g of Unique (1.050" group on top right) were the best groups. Top left was 5.0g W-231 with some fliers.... bottom left was my .38 SPL +P loads with 5.2g of Unique.



Edited by gotsig? on June 09 2010 at 3:58am
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Berry's MFG
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Posted: June 09 2010 at 8:30am | IP Logged Quote Berry's MFG

I like it!

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