I got a nice note from Jason at Leaf Technologies, who had been curious about how different cartridges compared in terms of Muzzle Energy (ME). So what he did was take the data from BBTI and average the ME curves for the cartridges he was interested in, then plot them head-to-head in one Excel graph. He sent me the result, and with his permission I am sharing it here:
(Click to enlarge.)
I always love to see how others use our data, and the conclusions they draw from it. It’s EXACTLY the sort of thing we hoped would happen, and why we’ve made the data freely available. If you would like to read some of Jason’s conclusions, and the discussion they engender, pop over to the Northeast Shooters Forum.
And if you have your own interesting spin on how our data can be used in a new way, drop me a note. If I think it’d be of interest to others, I’ll be happy to post it here/link to it. Just send an email to email@example.com
So, we have a new winner! Kyle won the all-leather IWB of unknown make.
The next, and final, holster in our drawing is very much a known brand: a High Noon Holsters “Skin Tite” model leather OWB. This is a right-handed almost new holster which has a $54.95 value (plus shipping).
This particular holster is marked for a Steyr M. But just about any medium-large semi will fit (though the retention snap may not be in the perfect position). Interestingly, both a full-size 1911 and my Ruger Mark I fit perfectly (with the barrel protruding out the bottom).
Rules are the same as previously:
So, here’s the deal: make any kind of contribution to the Kickstarter (as little as $1.00 – I won’t mind), and enter into this drawing for a holster. Please note that this is *IN ADDITION* to the other rewards there on the Kickstarter – all perfectly good and valuable rewards. Then just come here and leave a comment, or post it on the BBTI Facebook page, or send me a Tweet. I’ll enter your name into a completely separate drawing. And next Wednesday after the Kickstarter is over I’ll select a name and send that person this holster is up for grabs.
If you’ve already contributed to the Kickstarter, just let me know and your name will go in the hat for this drawing.
Last chance – get your entries in and help me out with making the Kickstarter a success! Thanks!
The new Ballistics By The Inch site is now up and running! Bigger, Faster, And with More DATA! Take a look, spread the word, let us know if there are any glitches or problems.
Just spent a chunk of the afternoon and early evening doing something I had been meaning to do for at least a year: adding info about BBTI to various and sundry Wikipedia pages about ballistics and cartridges. I still need to create an actual ‘page’ about BBTI, but haven’t ever done that, so . . .
Anyway, now for all the cartridges/calibers we tested there are links on Wikipedia, plus any related entries that I could think of. But if you find yourself poking around there, and come across an entry which would appropriately link/mention BBTI, please edit it to do so (or drop me a note and I’ll take care of it.) This isn’t an effort to get more hits to the BBTI site (we’re rapidly approaching 2.5 million), but just to help more people get the information that they need.
. . . by losing their guns?
Report: Officers lose 243 Homeland Security guns
Washington (CNN) — Nearly 180 Department of Homeland Security weapons were lost — some falling into the hands of criminals — after officers left them in restrooms, vehicles and other public places, according to an inspector general report.
The officers, with Customs and Border Patrol and Immigration and Customs Enforcement, “did not always sufficiently safeguard their firearms and, as a result, lost a significant number of firearms” between fiscal year 2006 and fiscal year 2008, the report said.
And yet, one of the most common responses I hear to the idea of private citizens exercising our 2nd Amendment rights is that only law enforcement officers are trained adequately to safely handle and carry firearms.
Like this guy, no doubt:
(Cross posted to my blog.)
I mentioned the other day that the BBTI site was closing in on 2 million hits. And, with the site chugging along with 3,500 – 4,500 hits a day, I figured we’d get there before the end of this month. But then, over the last couple of days, hits about doubled, approaching 7,000 hits a day.
Now, this happens. Usually it is due to BBTI being “discovered” and posted on a new gun/shooting forum someplace – so a bunch of people who haven’t heard about the project yet run off to check it out, and send links to their friends. And it has also happened when I’ve posted some new information to the site (such as when we added in the additional testing results last spring) or announce something new in the works (as with the cylinder gap tests).
But that wasn’t the reason why we saw the bump up this time. Instead, it was because of an announcement from the FBI.
See, the FBI has announced that they are going to go to a .40 S&W AR-15 carbine. And in discussing that decision, people started citing our numbers on the .40 S&W cartridge performance in different barrel lengths. You can see what I mean at The Firearm Blog, at Calguns, and elsewhere. This is something I have mentioned before, how BBTI has come to be increasingly used as a resource for evaluating firearm performance, but this is the first time that I’ve seen it happen in response to some newsworthy item. And I think that is really pretty cool.
(Cross posted to my personal blog.)
Just under a month ago I wrote about launching the major upgrade to BBTI. Since then, we’ve had 217,390 hits to the site, bringing us to just shy of one million hits (986,999) as of midnight. Given how things have been going the last couple of days, I expect we’ll break a million today or tomorrow. [edited to add: we had over 21 thousand hits on 6/27, thereby crossing a million.]
And that’s kinda cool.
So, thanks to all who passed along word of our project. In particularly, our top ten referrers have been:
I find it interesting that the top referrer (by a long shot) isn’t even a firearms-related site. That we’ve risen high in Google searches comes as very little surprise, and I’m pleased that the BBTI blog itself has such a prominent spot, just after five of the best known gun forums/blogs. That’s kinda cool, too.
Anyway, thought I would pass this bit of good news along.
(Cross posted to my personal blog.)
Six months ago we launched Ballistics By The Inch. And since then we’ve had over 770,000 hits, one major magazine article, and coverage & discussion of the site in countless gun forums & blogs around the globe. When I have checked the stats for the site, I have never failed to be impressed with just how widely it has become known.
Well, tonight we posted a major upgrade to the whole site. This includes three additional caliber ‘chop tests’, but it also includes data collected from testing over 40 additional “real world” guns – including a baker’s dozen carbine-length guns. This data has been separated out into a new series of graphs for easy comparison. All together, there are now over 150 graphs showing ballistic performance – along with all the charts giving numerical averages for each 1″ increment in barrel length for 16 different calibers. And for the true data junkies, there are downloadable files (in two formats) for the entire sequence of initial tests, and another set for the second round of testing done in April 2009.
Like the initial project, this major upgrade and revision has been a huge job – and one only made possible by a lot of work from several individuals. Yes, there were the three of us testers from the original project. But there was also the addition of a fourth tester this time around who helped us gather & operate all those ‘real world’ guns, and I would like to welcome Keith to our team. But I would especially like to thank my good lady wife for all the html coding & design for our website – both the last time and with this major revision. Quite literally, none of this would have been available without her hard work.
There will probably be minor tweaks and additions to the site in the coming months and years. We still have some ideas of data which might be of interest to the gun community. But for now we hope that you will enjoy and make use of the data provided, and help to spread the word to others who may be interested.
(Cross posted to my personal blog.)
When we did the original round of tests, we used one or two ‘real world’ pistols for each caliber as a reference point for people to compare to the ideal platform of the T/C Encore. We thought that this would be adequate. But it quickly became evident that a lot of people wanted more data points of how ‘real world’ guns would compare at different barrel lengths.
So one of the major goals of this most recent round of testing was to revisit those calibers we had tested last year using a lot more ‘real world’ guns. In preparation for the testing, we started asking around from friends and family, until we had over 40 additional guns to test, in different lengths and quality. Here is that list:
Para LDA Carry 9 – 9mm, 3” barrel
Korth semi-auto – 9mm, 5″ barrel
Beretta 92 FS – 9mm, 4.875” barrel
Kimber Target ll 1911 – 9mm, 5” barrel
Sig P210 Target Heavy Frame – 9mm, 6” barrel
DSA TP-9 – 9mm, 6″ barrel
Beretta Cx4 Storm – 9mm, 16″ barrel
Kel Tec Sub-2000 – 9mm, 16″ barrel
Special Weapons MP5 Clone – 9mm, 16″ barrel
Infinity – .357 Sig, 6″ barrel
Bond Texas Defender – .357 Mag, 3” barrel
Colt Detective Special – .38 Special, 2.125” barrel
Smith & Wesson 627-3 – .357 Mag, 5” wo brake / 5.625” with brake
Korth revolver – .357 Mag, 5.875” barrel
Winchester Model 94AE – .357 Mag, 16” barrel
Stoeger Buntline – .357 Mag, 18” barrel
Beretta 96 Elite ll Brigadier – .40 S&W, 4 1/2” barrel
Rocky Mountain Armoury Sphinx – .40 S&W, 4 1/2” barrel
Browning Hi-Power – .40 S&W, 4 5/8” barrel
Ruger PC4 Carbine – .40 S&W, 16″ barrel
Bond Arms “Texas Defender” Derringer – .44 Mag, 3″ barrel
Smith & Wesson 629-5 Mountain Packer (ported) – .44Mag, 3” barrel
Smith & Wesson 629-5 Performance Center – .44 Mag, 4 7/8” wo brake 5 5/8” with brake
Smith & Wesson Model 629 Classic – .44 Mag 6 1/2”
Smith & Wesson Model 629 – .44 Mag, 12” barrel
Henry Golden Boy – .44 Mag, 20” barrel
Smith & Wesson Model 325PD (Airlite) – .45 ACP Revolver, 2 1/2″ barrel
Bond Texas Defender – .45 ACP, 3” barrel
Para LDA PDA – .45 ACP, 3” barrel
Beretta Model 8045 Cougar – .45 ACP, 3.625” barrel
Ed Brown 1911 – .45 ACP, 6” barrel
Group IND UZI – .45 ACP, 16″ barrel
Kahr Thompson – .45 ACP, 16″ barrel
Vector Arms Kriss Super V – .45 ACP, 16″ barrel
La France M16 – .45 ACP, 16″ barrel
Bond Derringer – .45 Colt/.410, 3 1/2” barrel
Navy Arms Schofield – .45 Colt, 3 1/2” barrel
Cimarron (Uberti) Colt – .45 Colt, 5 1/2” barrel
Cimarron (Uberti) Colt – .45 Colt, 7 1/2” barrel
Beretta Stampede Buntline Carbine – .45 Colt, 18” barrel
1892 Winchester Lever Action Rifle (reproduction) – .45 Colt, 20″ octagonal barrel
Quite a list, eh?
Here is a post pertaining to the testing and results obtained for the .40 S&W caliber.