testing 175 grain 7mm bullets

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
I found this rather interesting

For fun's, I tested out (5) different 7mm 175 bullets, shooting into dry print at 100 yards distance.

Dry print btw is brutal on bullets!!

I used a Tikka T3 SL in 7mm Rem Mag.

All the bullets were loaded with 70.0 grains of Retumbo for an average mv of 2,950 to 2,970.
Using a Magneto Chronograph.

Results for penetration and weight retention.

Nosler 175 Partition....... 9.0" 110.0 grains.. width .55

Nosler 175 LRAB........... 4.0" completely shattered bullet.

Sierra 175 Game King......8.5" 88.0 grains.. width .76

Hornaday 175 round nose.... 8.5" completely shattered bullet.

Hornaday 175 Interlock..... 8.0" 85.0. grains... width .78

Nosler 160 AB...............8.0" 69.0 grains....width .69

A famous bear hunter from Montana sent me some BITTERROOT 175's to try out as well.

They penetrated a full 12" with a perfect mushroom at 144 grains.
imo, the best performance of all.

Interesting enough, in regards to the Sierra bullet, I can't confirm but my understanding is that Brian Litz measured the Sierra 175 GK at .559 BC and the Nosler Partiton at .453

I have killed elk using the Sierra and would not hesitate using the bullet on a trophy bull elk hunt. It is very accurate and would make a good long range 7mm bullet.
It penetrated within a .5" of the Partition.
I believe the Sierra is often overlooked.



heres a few brands that are known to penetrate deeply
https://www.barnesbullets.com/bullets/tsx/#30294

http://www.woodleighbullets.com.au/

I must point out dry paper stacks are almost like shooting into wood planks, as a bullet catching medium
all the bullets would have penetrated significantly better in flesh
 
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