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These two technical papers describe the use of ANSYS AUTODYN and LS-DYNA software to analyze the transit time and residual velocities (incremental and terminal) of 9x19mm projectiles passing through 10% ordnance gelatin during high-velocity impact events. Investigation of bullet penetration in...

Finding the SG² publication (free to all) is like striking gold: https://snubgunstudygroup.com/pdf/SG2-Fall2021.pdf I've always thought the .38 Special cartridge has the potential to be one of the most accurate ones around, so Ed Harris' article on page 23 was a welcome and refreshing source...

After responding to another thread about sidearm and caliber selection elsewhere on THR, I began to wonder...I'd like to read about the "other" reasons that compel you to carry ("openly" or "concealed") the gun you've chosen to carry. Platform, caliber, and terminal performance aside: Why do...

Lately, I have been testing out the ability of 7.62x39 ammo to get through mild steel plate and have seen it make it through 1/2" plate (12.7 mm), and on some occasions, when using steel core ammo, through 3/4" (19 mm) mild steel plate at close range. Being the nerdy, "math-geek" type of...

It seems that one of the perennial topics on internet gun forums is the comparison of the 9mm and .45ACP using ball ammunition. Using the Schwartz terminal ballistic model to analyze the maximum penetration depths and the corresponding mass within the permanent wound cavities of the 9mm 115...

After posting some of this content on another thread, I look at the various threads here on THR in which it is suggested that we effectively "throw in the towel" and concede another portion of our God-given rights away to those who'd accept them as penance for the actions of a monster, I wish to...

For those wishing to inform their legislators about the false security that reinstatement of the 1994 Assault Weapons Ban offers, I have compiled a list of all the deaths (excluding the shooters) that occured in school shootings after the enactment of the Federal 1994 Assault Weapons Ban...

Please visit this poll: http://www.myfox28columbus.com/shared/news/features/town-hall/#results You can find it a little more than half-way down and in the middle of the page with "Yes" and "No" options

For those interested in testing ammunition in water, I thought that it might be nice to post my most recent (12.08.2012) water test result of the Federal 12 gauge Barnes Expander 3/4 oz (P152XS) as fired from an 11-87 with a 21" rifled barrel. I have used this saboted slug occasionally when deer...

Since 9mmforMe's thread was locked down due to circumstances beyound our control and before I was able to post the two .45ACP tests in water that I promised him, I figured that I'd take the opportunity to do so now that I've got some spare time. Here is the first one... Here...

I know that the topic is extremely “geeky” and probably far outside the interest of most THR members, but I figured that THR is probably the best place to ask this since there seems to be a fairly educated member base here and the very low “noise to signal” ratio (thanks to the moderation) seems...

Over the years, I've seen nothing new in the way that manufacturers list self defense ammunition performance data on their ammunition boxes and catalogs other than downrange velocity and kinetic energy at the corresponding ranges. With ballistic testing becoming evermore commonplace, I think...

The question posed is a simple one and I am curious to see if there is consensus on this topic. On pages 34 and 35 of "Applied Wound Ballistics: What’s New and What’s True", the authors describe the use of water as a tissue simulant citing the F.B.I. Firearms Training Unit’s use of water as a...

Not wanting to hijack the other 7.62 Tokarev thread in this subforum, I was wondering if anyone knew the actual diameter of the projectile that it fires? I've seen quoted diameters for the 'Tok' of .307", .308", .309" and .311", and since the Soviets usually produce their "30"s in .311"...

In a recent thread in which the relationship of momentum and kinetic energy to penetration has been discussed, I provided the following equation for terminal ballistic penetration in calibrated 10% ordnance gelatin: [SD x V] ÷ 5.5 = P SD = sectional density = [M (grs.)/7000/D² (in.)] V =...