Hello bmcgilvray and a very big thank you for the very in depth and detailed range report. I've always wondered what the ballistics of some of those loads would be when shot out of a real gun with a 4" barrel. How close to POA did those BB loads, and the 200gr load shoot for you when shot out of your M10? I second the motion that this should become a sticky.
Hey, good to see you 336A!
I didn't shoot the loads for accuracy but the 158 grain and 200 grain bullets were all striking swinging disc target I had set up at 25 yards. I was using the center 5 1/2-inch disc as an aiming reference and shooting from a rest.
I'm sure that some of the lighter bullets went beneath the disc but they weren't far off. I could aim at the bottom of the iron stem holding the disc and strike the disc with the lightweights.
I have to be careful with my ancient chronograph and its components. Having an aiming point avoids bullet damage from a low shot. Oehler hasn't built the Model 12 in years and replacement parts are sure to be non-existent. I ordered extra "sky screens" once after I shot one screen with a .22 short of all things and a friend, who had borrowed the chronograph, shot one with a .45 ACP. I still have 3 screens. When they are gone that's all for the chronograph and I'd have to get another.
The 200 grain .38 Special load will flip a disc over twice on my target stand. Only one other experimental load using 158 grain bullets and a heavy charge of powder will cause the discs to flip twice. Regular +P 158 grain ammunition will cause the discs to flip once.
The only 9mm load that will cause the discs to flip completely over one time is the 147 grain Ranger (old Black Talon) load. All other 9mm loads will only start the discs to swinging. This really doesn't prove anything regarding relative effectiveness of handgun cartridges but is interesting.
The .45 ACP will cause the discs to pinwheel merrily.
Thanks!! The search is on for some BB +P 158gr. SWC-HP.:yup:
Some of that ammo looks pretty old - is all of it still available? I've noticed all of you people who do "comprehensive" ammo testing never test Corbon DPX - one of the leading hollow points out there. What about Speer Gold Dot Short Barrel?
Originally Posted by Keltyke
All it takes is money.
I'm only mildly interested in the Corbon load but haven't purchased any to test yet. I'd be pretty interested in trying the Speer Short Barrel load, especially out of longer barrels, hah, just for fun. I'd like to see if it really offers any special advantage in short barrels that other loads don't possess.
No, some isn't available. The Winchester +P158 grain load was tested both in current guise and from a lot manufactured years ago. This was just to observe any change in performance. The Remington 158 grain load is current as well.
The Super Vel ammunition has attained almost mythical status though it has been out of production for many years. I had a couple of full boxes and a partial box so thought to run it over the chronograph screens.
Buffalo Bore is current and has generated a lot of interest on forums.
I'm not too keen on +P .38 Special loads with light weight bullets so concentrated on loadings with 158 grain bullets. Perhaps I can run onto some deals on some popular light weight +P ammunition to test in an upcoming installment of .38 Special tests.
I loved Super Vel compared to what came befor it. From personal experience, it was effective.
I still have an Ohler chronograph like the one in the photo.
It has long since be replaced with something a little more modern. :image035:
(but it still works!)
Hmmmph...they're makin' fun of my old ammunition and now my antiquated equipment.
Hah, everything I have around here is old.
On the contrary...........
As a lover of the 38 special, I find the bolded text quite interesting. This would tend to imply that the kinetic energy delivered by the 38 special and the heavier bullets exceeds the 9mm.
Originally Posted by bmcgilvray
Very good documentation of testing. I have not tested nor tried the BB. I am curious about how well it performs in the accuracy department. Being the deviation was very low, I would assume you should be able to get fairly good groups. I sure would like to see what BB uses to meter the powder.
Thanks! I've bookmarked this for future use. I shoot standard .38 up to .357 in my J-frame, but I use the Buffalo Bore when I load it up for SD. A bit less punch than a full .357, but impressive performance for a 2" barrel! And I sure wouldn't want to be on the receiving end...
Not all the kinetic energy of the bullet is imparted to the disc; some of it is used to alter the shape of the bullet; the bullet does not stop completely, so it still has some energy; some of it creates heat, etc.
Originally Posted by TedBeau
The exact determination of kinetic energy is "mass x velocity squared", or "mv2/2", - if v is much less than the speed of light :image035: