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.270 cal - Barnes

Below is the result of a 110gr Barnes TSX, used on a Mule deer, body weight approximately 140kg / 300lb. Muzzle velocity was 3400fps, impact velocity approximately 2580fps. The deer went a few steps, then dropped and expired.  The projectile did not encounter any major bones, only ribs.   This excellent performance was achieved via two mechanisms, a relatively high impact velocity combined with a light bullet weight, ensuring maximum target resistance (lower bullet momentum), all helping to ensure maximum energy transfer.  At impact velocities of 2200fps and below, bullet designs that shed weight come into their own.

MuleDeer for web

MuleDeer-Autopsy for web


Barnes 110gr TTSX

Below we have a red hind taken with .270 Winchester Barnes 110gr TTSX factory ammunition. Shot at a range of 515 yards (2142fps), due to high winds the bullet entered well behind the shoulder hitting the rumen, then raked forwards.

270 win factory ammo was a 110 gr Barnes tipped tsx entry

The below photo shows the exit wound (wind curved bullet path). The lungs were bruised but not directly damaged.

270 win factory ammo was a 110 gr Barnes tipped tsx exit

We can see in the next photo the narrow internal wound, as occurs with the Barnes TTSX bullet in the absence of high velocity.

270 win factory ammo was a 110 gr Barnes tipped tsx gut 3

This bullet could not render a wide enough wound to take out the liver or lungs when shot placement was not optimal. The animal required a follow up head shot to kill her. Had the hunter been using a weight shedding projectile (not just a few petals), it would have destroyed the liver and a second shot would not have been required. Please see SST (annealed) photos as a comparison.


 

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ABOUT US

We are a small, family run business, based out of Taranaki, New Zealand, who specialize in cartridge research and testing, and rifle accurizing.

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