Hyper Velocity Mosin Nagant round.

[Thompsoncustom]

Well I want your guys opinions on if you think this is going to work and it's more of a gimmick then anything else but I like the idea.

Alright I've done some zinc/alum casting in 9mm and I can push a 50gr zinc bullet 1700fps with low pressure the problem is I don't have a fast enough powder for a 4.5in barrel. Tho it makes some good dents in 1/4 steel. Well yesterday me and the cousin were out shooting and his ak made a nice dent in the 1/2 steel plate that we had but the mosin went through it. Got me thinking about loading a Zinc alloy (probably zakam 2 so the addition of copper) for the mosin nagant. Want to see how much steel a light bullet with a hardness around 100 brinell going super fast will go through.

I want to hit 4000fps with it so I was thinking the 115gr lyman mold #311359. That should cast around 70gr zinc alloy and Quickload says I can hit just over 4000fps. Do you guys think this is doable? Any downside to doing this? I have a 91/30 so I would think the powder will all be burnt before the bullet reaches the end.

[swheeler]

I'm sure it probably is doable, what powders is quickload recommending? I've shot the Win 123 gr jacketed at 3200 fps in 91/30 so would imagine a 70 gr with right powder could reach 4k or so?

[Thompsoncustom]

it doesn't recommend a powder I've just been throwing some in and most come out about 4000fps.

this is with a OAL of 2.800 and a 70gr #311359 mold. All data right at max

54.5grs H4198=4189fps
65.8grs Varget=4209fps
65.0grs IMR4895=4279fps

I've just been guessing on powders that might work well if anyone has a suggestion for more velocity and Quickload has it I'll see what the numbers are.

Also I'm guessing the OAL is way to long but unless someone reloads the #311359 I won't know till I try it.

[cheetah]

I4198, I3031, and H322 are used with the .308 Win sabots w/55gr bullet to 4000, so you're well within reason. I don't know if zinc is up for a fast ride through a rough tunnel.

[Thompsoncustom]

Here are the Quickload results of the powders you listed. Thanks IMR 3031 is the fastest so far

IMR 4198=4255fps
IMR 3031=4397fps
H322 = 4309fps


I don't know if zinc is up for a fast ride through a rough tunnel

Only one way to find out but Zamak 2 looks like some pretty strong stuff I've only cast Zamak 3 so far.

Here's some info on it off of Wiki

Ultimate tensile strength = 58,000 psi
Impact strength = 28 ft-lbf (5 ft-lbf aged)
Shear strength = 46,000 psi
Compressive yield strength = 93,000psi
Brinell Hardness = 130 Brinell (98 Brinell aged)

[dnepr]

Well I have thought about trying to replicate the Czech short range practice ammo with a zinc boollit . This is a little more ambitious , Paper patching might avoid any zinc fouling problems

[Thompsoncustom]

I have the gold Hi tek coating if I do this i'll probably get some of the slick extreme catalyst and see if it holds up. I've never had any foaling that I could tell in the 9mm but there's a big difference in velocity to.