High Speed Video : 380ACP Speer 90gr Gold Dot JHP

[Brass Fetcher]

Here is one of the high speed videos from today's shoot.

http://www.brassfetcher.com/High Speed Video/380ACP Speer 90gr Gold Dot (SIG P238).wmv

Please note that this is 20-percent gelatin, which is much tougher than the 10-percent gelatin used for 'static' shots. The scale upon which the gelatin block sits, are 1-inch squares with 1-inch spaces.

 

[Pyro]

Very neat stuff.
If I may ask, what else have you captured on high-speed?

 

[Adam123]

Very neat stuff.
If I may ask, what else have you captured on high-speed?

http://www.brassfetcher.com/

There are multiple calibers for rifle, handgun, and shotgun.

 

[Brass Fetcher]

Pyro - "We shoot all sorts of things" . Some on high speed video, while some are 'static' tests. One of the challenges is getting permission from the tests sponsor to publish the data publicly. Some sponsors are 100% pushing for freedom of information, while others understandably want to treat the data as proprietary and we respect that too.

 

[Ben86]

That is very cool, thanks for sharing. Interesting how the bullet got sucked back by the vacuum within the gel. Do you compensate for this when measuring penetration?

 

[1KPerDay]

Very cool stuff. Thanks for posting it.

 

[Brass Fetcher]

You're welcome.

More HSV videos here: http://www.brassfetcher.com/index_files/Page1950.htm

We'll be updating this section throughout the night.

@Ben86 - for dynamic shots (high speed video), we measure the depth traveled to the very tip of the projectile. For static shots (10% gelatin), we measure the length of the track which is naturally after the block has sprung back from the shot.

John

 

[FIVETWOSEVEN]

Looks like 9x18 didn't expand.

 

[Brass Fetcher]

That's correct - no expansion on the Silver Bear JHP fired from the Makarov.

More videos are being added today http://www.brassfetcher.com/index_files/Page1950.htm

 

[Pyro]

Just watched the .25 acp Gold Dot video, was always curious about this round since I have a few of them.
Didn't look like it expanded fully, from the video it seemed a pedal expanded causing the projectile to tumble before the other pedals had a chance to bend out.
35 grain bullets just don't have that much momentum.

 

[Brass Fetcher]

Yes that was indeed what happened with the Gold Dot. What causes a hollowpoints expansion is the stagnation pressure at the nose - which is driven by the density of the fluid you are shooting, but exponentially driven by the impact velocity. Velocity is much more important than the density of the fluid.

Speer probably went with a 35gr bullet because they are faster, all else equal, than a 50gr bullet. Chances are that the bullet was either designed in a 4" test barrel or that the chamber pressures are lower in order to accommodate the liability concerns if a gun of questionable condition got exploded with this ammunition.

 

[wally]

Great stuff, but some of the filenames are linked to the same video
(http://www.brassfetcher.com/index_files/Page1950.htm)

.45ACP and .380 Remington are two I noticed quickly.


How does 20% gel compare to 10% for penetration? If they are similar, anything that didn't exit the 10" block would be marginal penetration.

 

[Pyro]

The hottest round I know is the Fiocchi .25's FMJ I carry; the box says 800 FPS but with a 2.5 barrel I found other rounds running with an extra 40-50 fps (which your tests actually compliment).
I just saw the Glaser Slug video too. If they weren't $13 bucks for 6 bullets I'd get some.

 

[wow6599]

The 10mm looks good...........

 

[WardenWolf]

That's correct - no expansion on the Silver Bear JHP fired from the Makarov.

More videos are being added today http://www.brassfetcher.com/index_files/Page1950.htm

Still looks like it made as big a mess as the Speer Gold Dot .380.

 

[IMTHDUKE]

Great info here....thanks

 

[Sulaco]

The link seems to be broken.

 

[Brass Fetcher]

OK, the link should be working now.

 

[FIVETWOSEVEN]

Can you compile the aftermath of the tests in picture form so we can easily compare what they look like?

 

[Benaiah]

Great video! Thanks.

 

[Brass Fetcher]

"Wait for the report" .

All of that should be done by the end of next week.

 

[FIVETWOSEVEN]

Could you do a high speed of the 5.7 x 28 round next? I'm curious of how it performs.

 

[MikePaiN]

Incredible vids...thanks for all the work brassfetcher

 

[Brass Fetcher]

FIVETWOSEVEN - you're too much.

http://www.brassfetcher.com/High Speed Video/5.7x28mm FN SS-195.wmv

Many more videos to come in the next few days...

MikePain - you're welcome. Thank you for the kind words. Oh - the testing is funded by businesses and private individuals ... so thank them too, wherever possible.

 

[FIVETWOSEVEN]

Didn't seem like the 5.7 penetrated enough, whats your take on it?

By the way I love your videos, one of my favorite things to watch.