Heavy 7mm Projectile Expansion Test for my 7x57

Code4

AH fanatic
Joined
Feb 2, 2009
Messages
711
Reaction score
386
Media
44
Hunting reports
Africa
1
Australia/NZ
5
Member of
SSAA
Hunted
Australia, Zimbabwe, RSA (2), NZ (2), UK.
With my newly 18yo camera man still sleeping it off and the handbrake at Mass with the monster-in-law I was left to my own devices this morning.

I am looking for a 'soft' fast expanding heavy weight projectile for my 7x57. My rifle does not shoot light weight projectiles as accurately so I'm stuck with the heavy weights. Testing was done at a measured 100 yards and all penetrated.


I also found an accuracy load with the 173 H-Mantels. Velocity would be in excess of 2,340fps.



173 RWS H-Mantel

It was the first to expand and is the same weight as the the original FMJ load that made the reputation of the 7x57. I was expectiong the nose of the projestile to shear off early, as it is designed to do but was hoping for a larger would channel.

175 Hornady RNSP Interlock.

This one performed exactly as I expected, possibly expanding a little earlier and the least of all three. It kept on penetrating and I assume in the 7x57 would be capable of taking any game out to the limits of it's trajectory with this projectile.

175 Sierra SptBt

A real surprise package, I was expecting this to be a lot tougher and designed for the larger magnums. Its exit hole from the test medium was explosive and in the 7x57 would be perfect for larger deer and antelope such as Kudu and Elk.

175 Woodleigh PPSN

I have field tested this round in the 7x57 on large camels and all achieved full penetrated (except for one frontal shot) and did not expand. It is better suited to the 7mm RM and would probably be better in the 7mm Weatherby and faster for the largest game.
 

Attachments

  • Heavy7mm7x57PenetrationTest003.jpeg
    Heavy7mm7x57PenetrationTest003.jpeg
    163.5 KB · Views: 140
Last edited by a moderator:

BRICKBURN

Super moderator
Contributor
Lifetime titanium benefactor
AH ambassador
Joined
Aug 5, 2010
Messages
22,727
Reaction score
16,607
Location
Canada
Media
412
Articles
23
Hunting reports
Africa
8
USA/Canada
2
Europe
1
Hunted
Namibia, South Africa, Botswana, Mozambique, Canada, USA, Mexico, England
Never though of using wet newspaper to shoot through before. Interesting idea.

The damage from the Sierra, although not opening the soonest, is pretty impressive.
I didn't ctach the FPS on that Sierra. Was it going faster than the Hmantel?


By the way, thanks for the idea for testing.
 

DOC-404

AH elite
Joined
Jan 25, 2011
Messages
1,243
Reaction score
262
Media
57
Hunting reports
Africa
1
Excellent post, Code4, nicely done. I am a big Sierra fan and now you can SEE why. I hunt PG with hand loaded 250gr Sierra's from my cz .375 and have never had any problems with them. They are excellent on the big cats as well. A friend of mine dropped a Buffalo on the spot with a 300gr Gameking through the engine room, and the wound channel was almost unbelievable. They are super accurate in my .308 and .375 as well.
 

Code4

AH fanatic
Joined
Feb 2, 2009
Messages
711
Reaction score
386
Media
44
Hunting reports
Africa
1
Australia/NZ
5
Member of
SSAA
Hunted
Australia, Zimbabwe, RSA (2), NZ (2), UK.
Sierra has all but been forgotten in the marketing hype of the super premiums. I used a 7mm 140 SptBt in the same 7x57 to take a 14 pt Red Stag in New Zealand in April 2011. Here is the entry hole angling towards the front right leg with the hide peeled off. It did not exit and the stag was dead on its feet and fell down hill. Range was 200 yards.



Shooting wet paper is only that, shooting wet paper. It is a quick and easy way to make some kind of comparison and has usually confirmed most of my in-field observations.
 

Attachments

  • NewZealand017.jpeg
    NewZealand017.jpeg
    73.9 KB · Views: 118

enysse

AH ambassador
Joined
Jan 20, 2009
Messages
11,641
Reaction score
4,186
Media
136
Hunting reports
Africa
8
USA/Canada
1
Member of
Northeast Wisconsin SCI chapter, Lifetime member of NRA,RMEF
Hunted
Namibia, South Africa (East Cape, Guateng and Limpopo)
Thanks for the post, Sierra bullets are very underrated.
 

Forum statistics

Threads
35,557
Messages
663,518
Members
60,199
Latest member
FlorrieVar
 

 

 

Latest posts

Latest profile posts

Tally-Ho Hunting Safaris wrote on jfowler812's profile.
hi Mr fowler

im happy to do these deals for 2021

i will knock off 10% off each deal if you take 2 so $18000 per package

look forward to your response

regards
Mule deer and Colorado elk seasons almost done! Hunters driving farm roads, looking for racks, their PH driving them along, I ask that you not pull into my drive. The buck behind me, on the boundary line of the GMU somehow knows. The hunter laughs, I would invite you in to see my Searcy rifles but social distancing prevails, darkness arrives and the buck slides away into secret tree grove...
Boyd Brooks wrote on Skinnersblade's profile.
Ellwood Epps has 1 box of 25-20 in stock. Look them up on the web. They are located in Orilla Ontario.
Lkhntr wrote on Warpig602's profile.
On the vx6 2-12 what does the zl2 stand for?

Thanks, Oliver
bowjijohn wrote on AfricaHunting.com's profile.
Many thanks for re formatting my article for the forum

I served my time in both the bush and during the bush war

I hope it did it justice

Education is where it is at - without it the wild places are history

You - sir - are well placed to make a difference

J
 
Top