Question on short-barrel .357's

S

Skans

New member
Does anyone know the approximate muzzle velocity of a 2" .357, such as the S&W Titanium 327 (8-shot revolver). In other words, due to such a short barrel, is there really going to be that much difference in muzzle velocity of a standard .357 and a standard .38 special round.

It seems to me that much of the powder and energy of a .357 would simply be wasted in such a short barrel set-up. Am I way off base on this???:confused:
 
Thanks! That's exactly what I was looking for. Interesting, you still pick up on average about 150+ FPS with .357 over .38 special, even with a 2" barrel.
 
Magnum ammo will be significantly more powerful than .38 Special even out of a short barrel. I did a lot of reading before selecting the barrel length for my SP101, and depending on who was telling it and the ammo used, the .357 lost 70-100 FPS between a 2.25" and 3.06" barrel.

In short, a .357 will have significantly more oomph than a .38 out of the same length barrel. This holds true even if there is no barrel and you were to fire the bullets side-by-side out of a chamber alone.

But more barrel length will help the velocity of either a great deal.

Offered for what it's worth from a master armchair ballistics researcher.
 
I realize that .357 is always going to have more punch even in a very short barrel, but my thinking was that there is a lot of waste out of 2" barrels, perhaps enough waste to discourage me from not considering a 2" .357. Yes, lots of waste, but still significantly more punch than .38 special.
 
My experience shows a significant difference between 357 magnum and 38 special loads from snubbies. I see about 400 fps difference between the 2, for me that definitely makes it worthwhile. I have seen people shot with 38's and 357's from snubbies. If you can effectively use 357's then use those.
 
Please note

When you're reading bbti graphs account for this

in every case with the T/C Encore the length of the barrel was measured from the end of the barrel back to the breech face. This is how semi-auto pistols are measured, but revolvers are measured as the length of the barrel in front of the cylinder gap. Take this into consideration when comparing calibers using our numbers.





I have a S&W 327 NG and its a blast to shoot. Magnum loads are by far more fun than .38spl.
 
Wondering how long .357 supersonic lasts out of the 5 inch bbl. Do you think we get 50 yards before it drops to sub sonic?
Click to expand...

Probably 100-150 yards depending on where it starts with your gun in your conditions. It is very load dependent as there are so many mid level loads, my guess is for full power loads.
 
Here are some actual Chrono results from 1 7/8" S&W M340

185 LFNGC, Beartooth, WW cases, Fed 200 Mag primers, 14.7, Lil'Gun, 1006.5 fps

180 LWFN LBT, Fed Fact, Fed cases, Fed primers, .357 Mag, Fed Fact, 905 fps

158 LSWC, Rim Rock, Starline cases, CCI Std primers, 12.7, H-2400, 967 fps
158 CSWC, Add, Mixed cases, Std primers, 13.5, H-2400, 1074.5 fps
158 JHP - XTP, Horn, Mixed cases, Std primers, 13.5, H-2400, 1009 fps
158 LRNFP, Meister, Mixed cases, Fed 100 primers, 9.6, Blue Dot, 1019.5 fps
158 JHP, Remington, Mixed cases, Fed 100 primers, 9.6, Blue Dot, 945.5 fps

130 Hydra-Shok, Fed Fact, Fed cases, Fed primers, .357 Mag, Am Eagle, 1159 fps

158 LSWHP, Rem Fact +P, RP cases, RP primers, .38 Spec, Rem Fact, 752.5 fps

130 Fed Am Eagle, Fed Fact, Fed cases, Fed primers, .38 Spec, Am Eagle, 680 fps
 
Last edited:
Yes but from the purely pointless viewpoint a snubby .357 magnum is cool. Every revolver collection should have one. How's that for contributing absolutely nothing? Personally I own a Colt Lawman Mk III snubby.
 
Skeeter Skelton was quite enamored of the 2.5' S&W M-19 when it first appeared, but then said he got tired of the muzzle blast and flash and realized a 4" was just as easy to conceal. I have the 2" barrels for my Dan Wesson when I feel the urge.
 
It seems to me that much of the powder and energy of a .357 would simply be wasted in such a short barrel set-up. Am I way off base on this???
Click to expand...

Not off base, but load selection can have big an effect here, for example I use a very fast burning powder and magnum primers in my .357 snubbie loads.
 
When you're reading bbti graphs account for this

in every case with the T/C Encore the length of the barrel was measured from the end of the barrel back to the breech face. This is how semi-auto pistols are measured, but revolvers are measured as the length of the barrel in front of the cylinder gap. Take this into consideration when comparing calibers using our numbers.
Click to expand...

The Ballistics by the Inch website shows data two ways. From the same barrel as it is cut down, and from actual revolvers with different barrel lengths.
 
I don't find the recoil of 357 that bad out of either a Ruger sp101 or a Colt Lawman snub.
Shoot a can with both a 357 and a 38 and you will know whats what. The 357 makes it jump several feet more.
 
Originally, the .357 was supposed to produce about twice the velocity of the .38 special. Not enough difference to put up with the extra flash and noise in my 2" SP101.
 
Originally, the .357 was supposed to produce about twice the velocity of the .38 special. Not enough difference to put up with the extra flash and noise in my 2" SP101.
Click to expand...

It does give you 400-500 more fps with any given bullet weight. Whether or not that is worth it to you depends on your needs. For me it is absolutely worth it.
 
You must log in or register to reply here.
Back
Top