Favourite 38Spl or 357 Mag loads

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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should treated as suspect and not used.

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Forum rules
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
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ovenpaa
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Favourite 38Spl or 357 Mag loads

#1 Post by ovenpaa »

I have a shiny new and unfired Remarlin 1894C that says it can be shot with both .357Mag and .38 Special. Does anyone have a preference for one or the other for Gallery Rifle and a recommended bullet. Are there any advantages with jacketed or cast and any tips or tricks I need to be aware of other than just shoot the feckin thing.
/d

Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...

Shed Journal
Dougan

Re: Favourite 39Spl or 357 Mag loads

#2 Post by Dougan »

As for .38 or .357...check out this recent thread: http://www.full-bore.co.uk/viewtopic.php?f=11&t=17606 - I given my opinion, and Adam's comments were most enlightening...

For Gallery (10 - 50m) I use a .357 case, 4.1 gn of Vhit N320*, and one of Rog's 158 gn soft alloy RNFPs...the rounds load and shoot very nicely...

* The Vhit manual doesn't give an N320 load for magnums (only .38sp) - I was advised that as it was a downloaded 'cowboy action' load, that it was ok to just add .3 of a gn to the .38 data to make up for the extra case space...

...and it's 4.1 gn because I was aiming for 4.0, but that was the nearest I could get with the Lee Autodisk (the best thing since sliced bread for loading pistol calibers IMHO...)
knewmans

Re: Favourite 39Spl or 357 Mag loads

#3 Post by knewmans »

What OAL do you use Dougan?
Dougan

Re: Favourite 39Spl or 357 Mag loads

#4 Post by Dougan »

I don't really seat 'to' a depth, but so that the slight roll-crimp goes into the cannelure on the bullet; in such a way that you can run your nail down it without being able to feel where the case starts...

...I've just measured some I've got made up, and they average 1.568".
markyw

Re: Favourite 38Spl or 357 Mag loads

#5 Post by markyw »

I have an 1894c in 38/357. For short range out to 25 yards I use 4.3gr of unique in a 38 and 5gr in a 357, both behind a lead 158gr RNFP or TC.

Regards

Mark
Dougan

Re: Favourite 38Spl or 357 Mag loads

#6 Post by Dougan »

There must be some other GR shooters with different preferences to the loads already given...

...I'm very curious to find out what others use for GR comps...com'on guys, share your secrets...
FredB
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Re: Favourite 38Spl or 357 Mag loads

#7 Post by FredB »

My first .357 was a Smith & Wesson model 27, purchased second hand at "Pistol 79" at Bisley. As the years went by, I had two S&W 686s, a model 66, a Colt Python and a pre-WW2 Colt New Service Shooting Master. After the handgun ban, I bought a Rossi, just to have something to use the dies and cases. I have used every bullet shape, Bullseye, Unique, Herco, Vit N310 ans N320, 2400 and probably a few more that I have forgotten about.
I always came back to 5 grns of Unique with a 158grn SWC bullet. Worked in everything and won a lot of trophies.
Fred
Dangermouse

Re: Favourite 38Spl or 357 Mag loads

#8 Post by Dangermouse »

My club gun will feed one and not the other and have heard that to be not un common. So suggest you make some dummies of both calibres up and test throughout with both.

DM
DavidRees
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Re: Favourite 38Spl or 357 Mag loads

#9 Post by DavidRees »

For 25m comps such as T&P1, and MT, I'm now using 4.2gr of 3N37 in a 357 case, pushing a 180gr LTC out of my 16.5" microgroove Marlin.

Tech. data in image, below:
Attachments
2014 05 31 .357 Marlin 25m GM 180gr LTC 4.2gr 3N37 Fed 100 R+P 5T5.jpg
Dougan

Re: Favourite 38Spl or 357 Mag loads

#10 Post by Dougan »

Not heard of 3N37 before...so a slower powder (compared to 320 and 340) with a heavier bullet...

...nice group :good:
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