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Modern Personal Defense Weapon Calibers 014: The .223 Timbs (7.62x25mm Tokarev w/ Sabot!)

What do you get when you take the venerable speedster 7.62 Tokarev, and load it with a muzzleloader-style sabot and 50gr .22 cal projectile? You get one of the most interesting pistol, submachine gun, and personal defense weapon ammunition concepts there is! Today we’re looking at a little firebrand wildcat with a punch. The .223 […]

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“The Empire Strikes Back”: Recreating the Legendary .280 British (7x43mm) Round [GUEST POST]

The following is a guest article written for TFB by reader Tim about his efforts with his friend Paul to recreate the historical .280 British (7x43mm) round developed for the EM-2 and FAL rifles during the early pre-NATO rifle trials of the late 1940s. Enjoy!   This all started about two years ago when I […]

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Modern Personal Defense Weapon Calibers 008: The 10x25mm Norma Automatic

Oh yes, it’s that time. The 10mm Automatic, what hasn’t been said about it? Well, a decently sourced article about its history*, maybe, but that’s for another time. Right now, we’re considering the 10mm Auto (or 10mm Norma as it’s more prim and properly called) as a personal defense weapon and submachine gun caliber. The […]

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Modern Personal Defense Weapon Calibers 004: The 7.5x27mm FK Brno

It’s been a while since we’ve done one of these Modern PDW Calibers installments, but we’re back, and today we’re looking at a very new round on the market, one that is currently making some pretty big waves in the pistol world. I am talking of course about the 7.5x27mm FK Brno, designed for the […]

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Modern Intermediate Calibers: Trade-Offs – Bullet Mass

In the last installment, we talked about the trade-offs involved in increasing or decreasing the projectile’s diameter (and, thereby in convention systems, the bore’s diameter as well). One of the major pieces of the equation that we left out was how changing the projectile’s mass affects the round’s performance, and it’s this that will be […]

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Modern Intermediate Calibers: Trade-Offs – Bullet & Bore Diameter

Probably the most obvious element of ammunition design is the choice of caliber, or more specifically the choice of bore and bullet diameter. These two dimensions are of course closely linked in conventional ammunition systems (they can be decoupled with sabots, but those are outside the scope of this series), and together they relate to […]

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