Ballistics by the inch

Happy Thanksgivuk … er, I mean Birthday!

OK, first: Happy Thanksgiving to all my fellow Americans. And Happy Hanukkah to all who observe it!

But most of all,

Happy Birthday to BBTI!

Yeah, it’s our fifth birthday. We officially launched the site on Thanksgiving in 2008.  And it’s been a fun romp since then. We’ve gone through many different iterations on the site, adding in more calibers/cartridges, doing the big cylinder gap test, tweaking this and changing that. We’ve shot something on the order of 22,000 – 23,000 rounds. We’ve had something in excess of 20 million hits to the site. We’ve invested more than $50,000 and untold hundreds of hours of labor. And we’ve become pretty much the default resource for anyone who has needed (or just wondered about) data pertaining to handgun ammunition performance over barrel length. Like I said, it’s been fun! Thanks for helping to make it so!

And since it is our birthday, it’s time for a gift in the form of a whole new section to the BBTI website:

Polygonal v. Traditional L&G Rifling (“Glock tests”)

From that page:

For years people have wondered about the effects of the different styles of rifling, and whether one or the other would offer specific advantages for accuracy or velocity from a given cartridge.  But since many different factors can have an effect on both accuracy and velocity, these discussions have largely remained anecdotal.  We decided to see whether we could generate data as to performance differences between the two styles of rifling as concerns bullet velocity, using our standard chop-test techniques.  The data on this page is the result of those tests.

Check it out when you get a chance! And thanks again to all who have shared links to our site, who have sent us emails, who have contributed to help offset our costs — you folks have made our success possible, and it is very much appreciated.

 

Jim Downey

PS: as a personal thanks as well, I have made both my first novel and our care-giving memoir available for free download for today and tomorrow (Nov. 28th & 29th).

November 28, 2013 Posted by | 9mm Luger (9x19), Anecdotes, Data, Discussion., Links | , , , , , , , , , , , , , , , , , | 1 Comment

Take a chance on a holster.

I haven’t mentioned it here yet, but last weekend I launched a Kickstarter project to support my next novel:

St. Cybi’s Well – a prequel to Communion of Dreams by Jim Downey

Prequel to the popular novel Communion of Dreams. Get an early release download or a hand-bound copy in your choice of cover material.

So, *why* am I mentioning it here now?

Well, yesterday I got an unexpected box in the mail. Sometime a few weeks back I contributed a few bucks to a firearms-related website, and was entered into a drawing for various goodies. I never win these things, but participate just to be supportive of groups I like. Anyway, as you might have guessed, I actually won something for a change. This is what the box contained:

Here’s the holster with my Springfield EMP in it:

This is a perfectly nice holster, made by Woodenleather.com.  It’s marked as being for an “L-frame” S & W revolver with a 2.5″ barrel, but as you can see it isn’t molded specifically for that, and seems suitable for IWB use with a range of medium-to-small guns. I also tried my Steyr S9 and M357 guns, which fit perfectly, and smaller guns such as a Bond Arms derringer would also work, but ride deeper in it. A full-size 1911 and my Colt Python both fit fine, but the barrel protrudes out the end.

Now, the thing is, while this is a mighty fine holster, it’s made to be either used IWB or OWB left-handed. Note the position of the clip in the second image above. To me, it’s useless (or almost so). As I was thinking of how to find a new home for it, I also got to thinking about several other holsters of varying quality I have which I have wound up with but which I never use and I had another idea: use them for a promotion for the Kickstarter.

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 a 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 each week or so while the Kickstarter is going I’ll select a name and send that person whichever holster is up for grabs. Each winner’s name will go back into the hat for the next drawing, so you have multiple chances to win (meaning that the sooner you enter, the better for you).

If you’ve already contributed to the Kickstarter, just let me know and your name will go in the hat for the first drawing (and subsequent ones).

So, what are you waiting for? Go – get entered!

Jim Downey

September 21, 2012 Posted by | .357 Magnum, .357 SIG, .45 ACP, 9mm Luger (9x19), Discussion., Links | , , , , , , , , , , , , , , , , , , , , | 2 Comments

June? Already?

Yeah, seems to be. So here’s the numbers & info for the last month, plus a little look ahead:

We had 19,937 visitors to the BBTI homepage in May. We’ve added a number of additional review links to the list of Real World Guns. Followers for both Twitter and Facebook have also seen a nice uptick this last month.

Back in March I reported on how Google Adsense had screwed us over. Well, after looking at a number of options and being realistic about what kind of revenue advertising could generate, we’ve pretty much decided to just give up on advertising — with one small exception for now: you’ll note that some of the BBTI pages have a small ad promotion my novel. It is proving to be very popular, and the reviews for it have been quite positive — check it out. Of course, we’re still happy to accept donations to help offset expenses associated with BBTI — and thanks to those who have donated!

Happy & safe shooting, everyone!

Jim Downey

June 1, 2012 Posted by | Anecdotes, Discussion., Links | , , , , , , , , , , , , | Leave a comment