Minimum expansion speed for Barnes 140gr 308W MPG

Pen & Sword Life

25 years MIL experience, now a happy civilian
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Jul 16, 2021
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Guys, simple question: What is the minimum speed for proper expansion of the Barnes 140gr 308W MPG/RRLP projectile?

I’m currently using this round for hunting. I have cheap access to Danish Police surplus frangible 308W. Projectile is a Barnes 140gr MPG/RRLP and casing is marked with MPS (Not a reloader, so I don’t know what MPS means).

I have used it successfully for both deer and raccoon dog (an invasive species in Denmark), but until now below 100m. The round is quite accurate and shoots sub-MOA easily.

The max distances at my hunting grounds are 300m and the round is shot out of an 18 inch barrel (R5 rifling). I've yet to crono the speed at V/0.

I’m fairly convinced that I could get good results at that range, but could do well with some practical input in regards to what minimum speed is needed for the round to function. Don’t want to make stupid shots with potential crappy impact on target.
 

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Pen & Sword Life

25 years MIL experience, now a happy civilian
Minuteman
Jul 16, 2021
38
37
Denmark
www.instagram.com
Not a lot of info out there and none from Barnes. This thread discusses the 150 gr and said 2100 fps was the minimum in gelatin unless the bullet was modified:

Thanks for the the link. I aggree, not much on the Barnes MPG.
I'm sort of leaning up against the DRT test results that the Danish Army and Danish Hunting association did a few years back. It's close to the 2100 FPS statement, with the possibility of slightly lower minimum expansion speed.
Measurements are in cm.

I guess I would have to to make a 10% gel block and test the MPG at the range at 300m just to be sure :) Could be fun.
Using the less than precise cantaloupe medium at 100 meters did indicate effectiveness of the 140gr Barnes MPG.
 

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  • DRT TERMINAL SHOCK 175 GR 11,34g - 300m a.jpg
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zeroz

3m ta3
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Barnes technical support has always answered the phone and been happy to talk about expansion speeds with me. I think they do their tests in water so its arguable an whether they translate well for tissue. Call barnes.
 
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