Tag Archives: Diamondback

Alakablam

If you think an AR-15 pistol in 5.56 is kinda rowdy, how about an AR-10 in .308? I’ve been fooling about with one for the past few months (when I can get ammo).

Behold, the Diamondback DB10P, with a 13.5-inch barrel.

DB10

Equipped with an adjustable Gear Head Works Tailhook Mod 2 stabilizing brace, the DP10 is 31 inches long overall with the hook extended all the way and hits the scales at 7.8 pounds.

More in my column at Guns.com.

Playing with Jelly

It is not rocket science. Longer barrels give you more complete propellant combustion which translates to more velocity imparted to the projectile. The more velo, the more energy is carried by the projectile on the impact and the higher ballistic performance. In short, whittle the barrel down and you sacrifice some performance. By way of thinking, the optimal performance for NATO 5.56mm ball, such as M855, is wrung through a 20-inch barrel.

With that in mind, I wanted to check and see just how much velocity dumped by running a 7-inch barrel out of a DB15 I have been testing for the past few weeks.

This thing.

For reference, the Winchester 55-grain 5.56 NATO FMJ rounds I chose for the bulk of our reliability testing have a listed 3,270 fps muzzle velocity generating 1,305 ft./lbs. muzzle energy. We found that, out of the 7-inch DB15, an average across five rounds hit closer to 2,240 fps, which, using the standard bullet energy formula, translates to something like 619 ft./lbs., or a loss of about a third of its velo and half of its energy.

How effective is that? Well, in 10% gel, the FBI recommends 12-to-18 inches of penetration to be considered an effective self-defense round. In our tests with a 16-inch block of Clear Ballistics 10% gel, I found that every round of a 7-shot test string of Winchester 55-grain FMJ penetrated the entire block and left a significant channel in its wake. 

Food for thought. Now to test some Gold Dots and the like to see how they expand.

An 8-pound pistol

So for the past few weeks, I have been fooling around with a T&E DB15 pistol. Featuring a 7-inch barrel, it is a fairly compact blaster and I have to admit that the KAK Flash Can and Gearhead Works Tailhook is growing on me.

While right out of the box, the 23-inch long 5.56 NATO handgun weighs just 4.53-pounds, I have added a Sig Sauer Romeo 5 red dot, a 600-lumen Streamlight and a Magpul D60 drum to it, bringing its loaded all-up weight with spare batteries (in the MOE grip) and boolits of 8.7-pounds.

Nice. For reference, the total cost as shown with all accessories is still under $1K. 

More in my column at Guns.com. 

Pocket rocket, DB9 edition

For the past few months, I have been carrying Diamondback’s new Gen 4 DB9 pistol.

The $225 micro-framed 9mm, with an unloaded weight of just 13.4-ounces, while maintaining a 3.1-inch stainless steel barrel that gives an overall length of 5.73-inches, is described by Diamondback as the “smallest and lightest” 9mm on the market. With a flush-fit magazine shoe installed, its height is 4-inches flat. The maximum width is 0.89-inches. This puts it a hair larger than “mouse gun” semi-autos in .22LR, .32ACP and .380 Auto, but more than, say a J-frame .38.

While I prefer to carry a double stack (G19, S&W M&P M2.0 Compact, et. al) on most occasions, I did find the DB9 great for going to the gym as I find it weird to wear a belt with track pants. Likewise, while kayaking in shorts or doing yard/housework, the Diamondback in pocket carry was a good fit.

In all, I put about 1,000 rounds through the palm-sized parabellum in the past few months and found out a few things about it.

Anyway, more in my column at Guns.com, should you be curious.

Tough weekend

Spent lots of time on the range this weekend as I am T&E’ing several new guns such as Beretta’s 92X Compact and Diamondback’s DB9 Gen 4. I also took advantage of the great weather (70 degrees, a downright cold front in Mississippi!) and lane availability to dig out some classics from my gun lockers.

Verdict?

Lots of badly injured paper men, one painful yet minor case of slide bite, and 3,000~ rounds of brass left behind for the case goblins.

Lots of this…

…And a little of that

All that being said, not a bad weekend. I’ve had worse