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BUFFALO-BARNES LEAD-FREE 10mm Pistol and Handgun Ammo

SKU: 21D/20

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BUFFALO-BARNES LEAD-FREE 10mm - 155 gr. Barnes TAC-XP 1500 fps - 20 Round Box

(ITEM 21D)


This is a full power 10MM load that is within SAAMI spec and is thus safe for use in ANY/ALL 10mm pistols.

Loading this long-for-weight all copper bullet in the 10MM case, causes powder capacity limitations that we do not experience with shorter/heavier lead alloy bullets and thus our advertised 1500 fps velocity cannot be reached, regardless of how may internal ballistics charts tell us that we should be able to launch a 155gr. bullet @ 1500 fps from a 5 inch barrel, that long light weight bullet simply uses too much of the available case capacity to do so. See our below real world velocities fired from real world pistols, not extra long laboratory barrels, that give false high velocity readings. With Buffalo Bore ammo, you’ll achieve the velocity reading we advertise in the real world where it matters when your life and the lives of your loved ones may hang in the balance.

1455 fps - Custom 1911 with Nowlin 5 inch barrel
1429 fps - Colt Delta Elite, 5 inch barrel
1401 fps - Glock Mod 20,  4.6 inch barrel

If you are firing this 10MM ammo from an auto loader and are experiencing high extreme velocity spreads, it is not the ammo. Full power 10MM ammunition has always generated enough pressure to require a pretty stiff recoil spring in your handgun—this of course depends on many variables like your particular slide weight, etc. When the cartridge fires, it generates enough pressure/recoil to prematurely open your breech face in some guns. When this happens, the opening breech has an effect on the burn rate of the powder. This can result in some fairly high extreme velocity spreads. If you are experiencing extreme velocity spreads (in excess of 50 fps) simply install a stiffer recoil spring. For example, I have an original Colt Delta Elite. This Colt, with the factory spring runs extreme spreads of about 35 fps, with this load. I am happy with an ES of 35 fps, so I leave the Delta spring alone. My custom built Para Ordnance 1911, with a Nowlin barrel, runs extreme spreads of about 70 fps, so I installed a recoil spring that was roughly 4 lbs heavier and the extreme spread dropped to about 35 fps. (Wolff Gun Springs—800-545-0077-- www.gunsprings.com ) My Glock mod 20 was running extreme spreads of nearly 100 fps, so I installed a 6 lb heavier recoil spring and brought the ES down to 50 fps. The folks at Wolff will tell you what the factory spring rating is for your particular pistol, so you’ll know where to start. I should note, these high ES #'s really don’t matter in the real world as they do not affect accuracy or reliability. The firearms industry fixed this ES problem by watering down 10MM ammo, to the point that most 10MM ammo made by major manufacturers is pretty weak, but it does not open your breech face early…... If weak ammo is the “fix” you want, most any 10MM ammo made by major manufacturers will do. If you wish to shoot our full power 10MM ammo, you can choose to live with the high ES (you’ll only know if you are getting high ES #’s if you use a chronograph) or you can install a stiffer recoil spring.

This load was accurate and reliable in our three test pistols. 


Item 21D - Exterior Ballistics Charts for several Muzzle Velocities


Muzzle Velocity @ 1800 fps for Item 21D



Muzzle Velocity @ 1700 fps for Item 21D



Muzzle Velocity @ 1600 fps for Item 21D



Muzzle Velocity @ 1500 fps for Item 21D



Muzzle Velocity @ 1400 fps for Item 21D



Muzzle Velocity @ 1300 fps for Item 21D



Muzzle Velocity @ 1200 fps for Item 21D



Muzzle Velocity @ 1100 fps for Item 21D



Muzzle Velocity @ 1000 fps for Item 21D



Muzzle Velocity @ 900 fps for Item 21D



Field Proven pistol and handgun ammo. Maximum firepower ammo. Best ammunition for pistols and handguns for sale. Buffalo Bore. Strictly big bore. Strictly Business.

You must be 18 or older to order ammunition. Ammunition must ship UPS ground. Due to Department of Transportation regulations, we cannot accept returns on Ammunition. Make sure to use the correct ammunition in your gun. Check local laws before ordering.

Stacy on 07/11/2015 09:34pm
155 gn tac xp. This is the best game cartridge I have found for my witness hunter (made by the Italian firm, tanfoglio) it has a 6" match grade target barrel that has been magnaported and a 4 lb. Heavier recoil spring. I have less than 30 fps variation in muzzle velocity witch is around 1800 fps average. Can't wait to see how well the 45-70 does in my new Henry! Buffalo bore, my go to for game every time.
Rev. Jim Knight on 03/12/2013 08:40am
Used a G29SF, LW barrel w/21# RS. Recoil felt like P 9mm. Shot through the head of a freshly killed hog at 3ft for bullet test. Skull was shattered, found bullet under skin on off side, awesome!

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