Ruger Forum

Snub Nose Velocity Test

This is a discussion on Snub Nose Velocity Test within the Range Reports forums, part of the Firearm Forum category; This was really interesting. A couple of guys set up a Chronograph and did a Velocity Test on two Snub Nose Revolvers. Ruger SP-101 2.25 ...


Go Back   Ruger Forum > Firearm Forum > Range Reports

Reply
 
LinkBack Thread Tools Display Modes

Old January 15th, 2011, 02:25 PM   #1
 
Dood's Avatar
 
Join Date: Aug 2010
Location: Outside Of The Box
Posts: 701
Dood is on a distinguished road
Snub Nose Velocity Test

This was really interesting.
A couple of guys set up a Chronograph and did a Velocity Test on two Snub Nose Revolvers.

Ruger SP-101
2.25 inch barrel
.357 Magnum

S&W Model 442
1.875 inch barrel
Rated for +P loads

They used a variety of different kinds of ammunition for this test.



(The Burp Velocity was kinda funny.... )


EDIT TO ADD:
Here is the information from the YouTube page....
Quote:
Overall the % loss in energy with the SP-101 was 27.7%
Overall the % loss in energy with the Model 442 was 26.2%

These percentage losses are from factory stated velocities compared to our chronograph data. Most Factory .357 and 38 Spl loads are tested out of a 4 inch barrel.

Let it not be said that you don't get any benefit from a .357 Mag out of a snubnose revolver...just compare the two in the video. These benefits; however, do come at a price and that is more muzzle flash and bang, and greater recoil, that can result in slower follow up shots.

I was not surprised that the 110gr Winchesters were slightly anemic out of the snubby. This is based off of testing I'd done previously. I was however very surprised that the 158gr Speer's didn't perform as well. I had come to the assumption that the heavier bullets would maintain more energy out of the shorter barrel. In fact it lost 37% energy which was the highest percentage loss in the test. The Remington 125gr .357s performed pretty well and are typically bargained price, and should probably be high on the list for carry loads (although I do like the bonded bullet construction of the Speer's round more).

I want to get my hands on some of Speer's short barrel ammo to test in the future
To the Mod Staff:
If this is not the correct area to post this thread then by all means move it.
Thanks!




Last edited by Dood; January 15th, 2011 at 02:30 PM.
Dood is offline  
Advertisements
Old January 24th, 2011, 07:38 AM   #2
 
WheelyGuy's Avatar
 
Join Date: Jul 2010
Location: Tennessee
Posts: 1,091
WheelyGuy is on a distinguished road
That chrono seemed to be set up quite a ways from the shooting point. Is that typical? How close do you actually have one of those when officially measuring "muzzle" velocity?
WheelyGuy is online now  
Old January 24th, 2011, 08:58 AM   #3
Retired Gunsmith
 
Iowegan's Avatar
 
Join Date: Aug 2006
Location: Blair, NE
Posts: 8,966
Iowegan has a spectacular aura aboutIowegan has a spectacular aura aboutIowegan has a spectacular aura about

Awards Showcase

WheelyGuy, 10~12 feet from the muzzle is recommended. The reason .... when you fire a round, the velocity of burning gas is around 6000 fps. A plume of gas will exit the muzzle and quickly pass the bullet then peter out. If the muzzle is too close, the chronograph will try to measure the gas plume and get a grossly incorrect reading.

In the video, they got several "no data" conditions .... probably because they were shooting too high over the sensors. This happens to me a lot because I'm always afraid I'll blast the chronograph. I have the same exact Oehler chronograph and because it has two sets of sensors, it always compares both readings and displays the result. You either get a very accurate reading or you get a "no data" reading.
Iowegan is offline  
Old January 24th, 2011, 12:35 PM   #4
 
Dood's Avatar
 
Join Date: Aug 2010
Location: Outside Of The Box
Posts: 701
Dood is on a distinguished road
@Iowegan...
If you do not mind since I know you have posted that your are busy and have some health issues to take care of....
My question is: What your thoughts are on this guy's results with the higher end ammo?
I think he said the Gold Dot did not have the velocity that the manufacturers claimed it has.
(Something like that... )
Was this a 'Fair Test' from your experience?
Thanks for any and all replies...I will fully understand if you are to busy.

I was hoping this guy (or someone) would do a test with handgun type ammo.
I know this guy said he was going to do that at some point...
Dood is offline  
Old January 24th, 2011, 01:59 PM   #5
Retired Gunsmith
 
Iowegan's Avatar
 
Join Date: Aug 2006
Location: Blair, NE
Posts: 8,966
Iowegan has a spectacular aura aboutIowegan has a spectacular aura aboutIowegan has a spectacular aura about

Awards Showcase

Dood, Very few factory loads will actually reach "advertised velocity" unless you have a longer barrel. You may have noticed ... both test guns have pretty short barrels (2.25" and 1.875") so I would not expect velocity to be near as high as advertised. Yes, I think the tests were done fairly and are meaningful except "energy" is not a realistic statistic, rather "momentum" paints a better picture of effectiveness. Simply stated, momentum is velocity times bullet weight. There is energy & momentum chart in the Library as well as a "sticky" at the top of the reloading section.

Here's a QuickLOAD chart I had saved on Photobucket that may help explain why velocituies were so low in the above test. The red line and red numbers are for chamber pressure so don't worry about them. What we want to look at is the blue line and corresponding blue numbers at the right of the chart in respect to the black number at the bottom, which indicate barrel length. With this particular load, velocity is only 625 fps from a 2" barrel. At 3 inches, it increases to 775 fps and at 4", it hits about 825 fps. After 4", the bullet will continue to gain speed but at a much lower rate per inch of barrel.


Last edited by Iowegan; January 24th, 2011 at 02:05 PM.
Iowegan is offline  
Reply

  Ruger Forum > Firearm Forum > Range Reports



Search tags for this page

.357 snubby velocity

,

357 magnum velocities tests

,

357 revolver snub nose velocity

,

357 snub nose velocity

,
44 mag snub velocity
,

muzzle velocity in a snubnose revolver

,

snub nose 357 velocity

,

snub nose velocities

,

snub nose velocity

,

velocity loss in 44 mag snub nose

,
velocity loss in a 38 snub nose
,
velocity of .357 magnum in ruger sp 101 - videos
Click on a term to search for related topics.

Thread Tools
Display Modes


Similar Ruger Forum Discussions
Thread Thread Starter Forum Replies Last Post
Which 38 snub nose? Billd Ruger Double Action 43 November 20th, 2011 06:08 AM
Snub Nose SP101 rossa Ruger Double Action 24 November 5th, 2011 07:59 AM
Ruger SP101 Snub Nose Springs jguaraldi Ruger Double Action 1 September 5th, 2011 05:01 PM
Site dedicated to Snub Nose Revolvers terry_p Pistols & Revolvers 4 July 29th, 2010 04:58 PM
357 snub nose choices czruger Pistols & Revolvers 29 February 23rd, 2009 07:57 AM

Top Gun Sites Top Sites List  
Powered by vBulletin 3.8.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.1
Copyright © 2006 - 2014 Ruger Forum. All rights reserved.
Ruger Forum is a Ruger Firearms enthusiast's forum, but it is in no way affiliated with, nor does it represent Sturm Ruger & Company Inc. of Southport, CT.