need 357 mag data for 2400 with NO magnum primers

[lx2008]

hi,
as the above title suggests, i dont have any sm pistol mag primers on hand only sm. pistol.
i have always used 296/h110 but only with mag. primers. i did just buy some 2400 so i want to use this
powder to load 357 mag w/ 125gr jhp`s. only problem i`m having is i cant find reliable data for 2400
using standard sm. pistol primers. i looked at loaddata, and some issues of handloader that had 357
load articles but all data i saw was using mag primers.

any suggestion for using 2400, 125gr jhp`s & standard sm primers? (as an aside, i`m wanting to produce stout loads)

thank you!

[Rich/WIS]

Over the years have used a lot of 2400 in 357 and 44 and always used standard primers and had no issues. Did I miss the memo on using magnum primers?

[Ed_Shot]

over the years have used a lot of 2400 in 357 and 44 and always used standard primers and had no issues. Did i miss the memo on using magnum primers?

ditto!!

[atr]

same here....standard primers with 2400 in .357 and .44..no issues

[lx2008]

dont believe anybody missed any memo`s...i just didnt see any data so far for 357mag that that used 2400 and standard primers.
maybe i need to do a little more digging.

if you guys have any links you could post, i would appreciate it.

[racepres]

Yea...I'll weigh in as Only using Mag Primers with Ball powder... (Not the Flattened AA powders tho..they get standard primers also)

[Kai]

dont believe anybody missed any memo`s...i just didnt see any data so far for 357mag that that used 2400 and standard primers.
maybe i need to do a little more digging.

if you guys have any links you could post, i would appreciate it.

Plenty of data out there using standard primers. Actually very little data out there specifying magnum primers with 2400. Here is an example for ya from Handloaddr #234:

[NSB]

First of all, use what you have. You need to get yourself a couple of different loading manuals also. Magnum pistol primers are for powders such as 110 and 296 (not sure you even need them there, but I use them. In fact, I use them for everything since that’s all I have and I have a LOT of them).

[ddixie884]

Lyman #45 lists 2400 with regular primers. You can find this manual online and download it.

[stubshaft]

+1 - I only use magnum primers to light up 296 in my 357's including my Maxi's.

[imashooter2]

The data on the Alliant site uses standard primers with 2400. Hard to get a better authority than the manufacturer.

[Rodfac]

Over the years have used a lot of 2400 in 357 and 44 and always used standard primers

Plus one...Rod

[rintinglen]

Speer No. 14. p. 895. 357 Magnum, 125 grain JHP, 2400 powder, OAL 1.575": Start; 16.5 grains, 1335 FPS, Max 17.5, 1409 FPS. CCI 500 PRIMER. (standard Small Pistol.)

Lyman's 50th lists an oal of 1.59 inches and a max of 17.7 grains. Generally speaking, magnum primers add very little pressure, but include a powdered aluminum-based substance that burns a little longer to help insure complete ignition. Additionally, Magnum primers have a slightly thicker cup to help resist primer piercing. My model 14 has a very light trigger and doesn't do well with standard CCI primers, much less Magnum 550's.
All things considered, 2400 will run with standard primers and should work just fine. Any load for a 357 and 2400 can use a Standard primer. This is not the case with H-110/296, who need the extra spark that an SPM primer provides for best ignition..

[justindad]

Some powders are only good for specific applications and can act unpredictably outside those specific uses. Other powders can be used in a wide range of applications without any surprises. Since 2400 is used everywhere from 14ksi .45 Colt loads to rifle loads, you should be good with a standard SPP.

[Kosh75287]

I'VE used 2400 with the Winchester LP (semi-magnum?) primers, and could tell no difference between them and CCI or Federal standard LPs. I guess a reloader MIGHT get a SLIGHT bump in velocity (and pressure) if switching to a magnum pistol primer in a load originally worked up with a standard pistol primer, but I'd bet that the difference would need a chronograph to be measured.
A majority of my magnum-pistol (.357 & .45 Colt for Rugers) reloading is done with 2400 precisely because it does not require magnum primers to assure best ignition. I DO keep true magnum pistol primers around, in case I use IMR-4227, or run across a new propellant recommending their use, but otherwise, they just lay on the shelf & collect dust.
I have NEVER been able to get 2400 to burn completely in a 6" barreled revolver of any caliber. IMR-4227 is worse, even with magnum primers, and offers me no velocity advantage over 2400 in the 6" .357. I have ALMOST obtained complete burning with 2400 in my 7.5" .45 Colt Redhawk, and 2400 performs quite well in it. IMR-4227 gives higher velocities, but the 2400 loads seem to group better.

[pworley1]

You should almost always be able to substitute a standard primer for a magnum primer. You might need to reduce a max load a little if going the other way.

[siamese4570]

I went thru the same exercise. I couldn't tell any difference between the regular and mag primers.
Siamese4570

[Frank V]

A fellow named Elmer Keith used a lot of 2400 & said do not use mag. primers with his loads. Some of his loads were not meek either.

[Thumbcocker]

Never used a magnum primer with any handgun load using 2400, h110, or 296.

[Larry Gibson]

hi,
as the above title suggests, i dont have any sm pistol mag primers on hand only sm. pistol.
i have always used 296/h110 but only with mag. primers. i did just buy some 2400 so i want to use this
powder to load 357 mag w/ 125gr jhp`s. only problem i`m having is i cant find reliable data for 2400
using standard sm. pistol primers. i looked at loaddata, and some issues of handloader that had 357
load articles but all data i saw was using mag primers.

any suggestion for using 2400, 125gr jhp`s & standard sm primers? (as an aside, i`m wanting to produce stout loads)

thank you!

About 11 years ago I developed a 2400 load under the Winchester 125 JHP for use in my Contender 357 magnum. It also shoots well in my 6" Ruger Security Six.

I developed a load 18 gr of Alliant 2400 in Winchester cases using WSP primers under the Winchester 125 JHP. OAL is 1.553. Measured psi in that Contender barrel via the Oehler M43 give a very uniform 33,200 psi. Velocity out of the 7.94" Contender barrel is 1771 fps. This load runs just over 1500 fps out of the Ruger.

A very good magnum level load. Just wish I could get more of those Winchester 125 JHPs....probably never make them available as a component again......