7.62x39 Expansion In Water At 100 Yards

Off the shelf ammo for all Rossi firearms.

7.62x39 Expansion In Water At 100 Yards

Postby LowKey » 01 Mar 2017 16

Did water expansion tests at 100 yards with some 20 year old China Sports 123 grain soft point
that groups well in my Mini-30.

Also tested Monarch 123 grain HP polymer coated.

Rifle used was my CZ bolt action. Both brands group well in the CZ.

Water buckets view from 100 yards__.jpg

The water buckets look bigger in the rifle scope.



Target and Water Buckets with Sand Backup_.jpg


5 inch square cut out to expose plastic water bag__.jpg



The first shot of each brand of ammo was fired into the target to the right of the buckets
to determine the ammo's relative zero.

Then the expansion shot was fired into the buckets' 5 inch square cut out.
The 5 inch squares were cut out of both the front and back of each bucket,
allowing the bullets to impact the water bags without going through the buckets' hard plastic.
The hard plastic can limit expansion.

Each bucket contained a plastic bag filled with water (because the buckets had the 5 inch cut outs).

The China Sports expanded well, with 103 grains retained weight.
The casing and copper colored jacket would stick to a magnet, the lead colored core would not.

The ongoing China Sports corrosion test looks good so far,
but going to give it another couple of days before proclaiming it non-corrosive.

No expansion or weight loss by the Monarch.
The hollow point was not clogged.

China Sports 7.62 SP expansion core and jacket.JPG


Monarch 7.62x39 HP polymer coating no expansion.JPG
You do not have the required permissions to view the files attached to this post.
LowKey
Supporter
Supporter
 
Posts: 204
Joined: 18 Feb 2016
Has thanked: 190 times
Been thanked: 92 times
My Rossi Choice: M92
Location: New Rawlins, WY

Re: 7.62x39 Expansion In Water At 100 Yards

Postby Ranch Dog » 01 Mar 2017 17

Great info, really like this kind of testing!
Michael
Image
User avatar
Ranch Dog
Site Admin
Site Admin
 
Posts: 8664
Joined: 23 Jan 2012
Has thanked: 1435 times
Been thanked: 1952 times
My Rossi Choice: Rio Grande
Location: Cuero, TX

Re: 7.62x39 Expansion In Water At 100 Yards

Postby GasGuzzler » 01 Mar 2017 17

Looks like fun.

Did they go all the way into the sand?
__________________________________________________________________________________________
I've always been crazy but it's kept me from going insane.
User avatar
GasGuzzler
Supporter
Supporter
 
Posts: 1910
Joined: 02 Nov 2015
Has thanked: 140 times
Been thanked: 211 times
My Rossi Choice: Revolver
Location: Cooke County, TX

Re: 7.62x39 Expansion In Water At 100 Yards

Postby LowKey » 01 Mar 2017 20

GasGuzzler wrote:Looks like fun.

Did they go all the way into the sand?


The first ammo tested was the China Sports SP that expanded nicely.
The projectile was found in the second bucket of water.
It did not penetrate into the third bucket of water or go in the sand.
The shock wave from the expanded soft point destroyed the first bucket.

Next was the Monarch HP that did not expand.
It was shot through the two remaining buckets and was found in the sand.
Interestingly with the non-expanding HP, the first bucket remained intact
but the shock wave destroyed the second bucket.

The length of each bucket of water was 10 inches.
LowKey
Supporter
Supporter
 
Posts: 204
Joined: 18 Feb 2016
Has thanked: 190 times
Been thanked: 92 times
My Rossi Choice: M92
Location: New Rawlins, WY

Re: 7.62x39 Expansion In Water At 100 Yards

Postby HarryAlonzo » 01 Mar 2017 23

Tell us about your cat(s).
User avatar
HarryAlonzo
Supporter
Supporter
 
Posts: 455
Joined: 31 Dec 2015
Has thanked: 70 times
Been thanked: 93 times
My Rossi Choice: M92
Location: Seattlish

Re: 7.62x39 Expansion In Water At 100 Yards

Postby Ranch Dog » 02 Mar 2017 07

HarryAlonzo wrote:Tell us about your cat(s).

+guns

Someone would think the same of me. I buy the stuff in 5-gallon buckets as well but to clean up the messes my tractor and implements leave on my barn floor.
Michael
Image
User avatar
Ranch Dog
Site Admin
Site Admin
 
Posts: 8664
Joined: 23 Jan 2012
Has thanked: 1435 times
Been thanked: 1952 times
My Rossi Choice: Rio Grande
Location: Cuero, TX

Re: 7.62x39 Expansion In Water At 100 Yards

Postby LowKey » 02 Mar 2017 19

.
Square buckets work better than round buckets.

With round buckets, often the projectile slows down in the water
and bounces off the curved surfaces of the 2nd and 3rd buckets.
If the projectile lands in the grass, it's lost forever.

Out of the three square buckets used for these tests, only one can be used again.
The two kitty litter buckets were torn up beyond repair.

Only one square bucket out of three is re-usable.JPG


.
You do not have the required permissions to view the files attached to this post.
LowKey
Supporter
Supporter
 
Posts: 204
Joined: 18 Feb 2016
Has thanked: 190 times
Been thanked: 92 times
My Rossi Choice: M92
Location: New Rawlins, WY

Re: 7.62x39 Expansion In Water At 100 Yards

Postby HarryAlonzo » 03 Mar 2017 01

True enough, kitty litter is the best inexpensive oil absorbent there is.

But I miss my cat.

I want to know why Lowkey needs 5 gallon buckets of sildenafil citrate.
User avatar
HarryAlonzo
Supporter
Supporter
 
Posts: 455
Joined: 31 Dec 2015
Has thanked: 70 times
Been thanked: 93 times
My Rossi Choice: M92
Location: Seattlish

Re: 7.62x39 Expansion In Water At 100 Yards

Postby Ranch Dog » 03 Mar 2017 07

HarryAlonzo wrote:I want to know why Lowkey needs 5 gallon buckets of sildenafil citrate.

I figured you would ask! I guess he is a busy fellow.
Michael
Image
User avatar
Ranch Dog
Site Admin
Site Admin
 
Posts: 8664
Joined: 23 Jan 2012
Has thanked: 1435 times
Been thanked: 1952 times
My Rossi Choice: Rio Grande
Location: Cuero, TX

Re: 7.62x39 Expansion In Water At 100 Yards

Postby akuser47 » 03 Mar 2017 11

Great info
Image
Live Free,Ride Free, Or Die Fighting, For The Right, To do So!
User avatar
akuser47
Moderator & Supporter
Moderator & Supporter
 
Posts: 4972
Joined: 12 Feb 2012
Has thanked: 1202 times
Been thanked: 457 times
My Rossi Choice: M92
Location: ohio


Return to Factory Stuff

Who is online

Users browsing this forum: No registered users and 1 guest

  • Advertisement
cron