Heavy match SKS barrel project anyone?

^ Cool :cool: I'll have to have a look! Incidentally, I stumbled across a pretty slick website that provides free CAD design software, www.emachineshop.com :D I've started drawing (well, "hacking" or "botching" is probably a better word for it :p) a couple of my prototype ideas, hopefully something comes out of it! I would encourage others to check it out though, it's really cool, and maybe someone will actually go the distance and beat me to it (I sincerely hope so!) :D
 
buster said:
just found out marstar carries .308 unchambered 7/8 barrels.18 inches long ,this could be a good possible.
Click to expand...

Not trying to be picky but, don't we need at least an 18 1/2" to keep the firearms a non-restricted?:confused:
 
When looking at doing something similar, I noticed that the gap between the gas block and barrel was quite small. Most of that heavy barrel would have to be removed to fit the gas block and the receiver.

Then you would have another bottle neck where the exit port piece goes on and under the handguard. Ultimately, I couldn't see where one could get a larger barrel in there without some form of interference.

As a single shot, sure but what would be the point. As a repeater, I can't see it so would really like to get pics.

Do you cut a channel in the top of the barrel for the handguard and other bits?

On a side note, just picked up a Rem 742 to play with. Want to see how 'tactical' this can become. Anyone already done this?

Jerry
 
The distance between the axis of the gas system and the axis of the bore will be the limiting factor in barrel diameter. A new gas block would not be a big deal.
All the 870 shotgun buttstock options could be adapted to a 742. No doubt a handguard could be fitted, or incorporated in a synthetic forend.
 
Removing the bayonet, the gas op-rod, and securing the action to the stock - bedding, and replacing the tab by the trigger assembly with a setscrew go a long ways towards accurizing the SKS. Pair this with a new barrel, and you may be going somewhere intersting.

Question is - is it worth it for an SKS?
 
mysticplayer said:
When looking at doing something similar, I noticed that the gap between the gas block and barrel was quite small. Most of that heavy barrel would have to be removed to fit the gas block and the receiver.

Then you would have another bottle neck where the exit port piece goes on and under the handguard. Ultimately, I couldn't see where one could get a larger barrel in there without some form of interference.
Click to expand...

This is what is bugging me right now. Not a lot of meat to play with either.

I'm starting to think about opening up the gasblock by cutting it and then welding on or remanufacturing it somehow to accept a larger diameter barrel.

the gasport hole is drilled from back to front

<--- Muzzle ... (/ 45deg this way?) ... Reciver --->.
 
I think one of the biggest shortcomings of the SKS is the horrible chambers. The ones I have done cast for have had very long throats. One had no throat at all, just a big bulge for the bullet to rattle around in before slamming into the lands.

The Norc sight suggests that acceptable accuracy is <7cm or about 3" which is about all the accuracy I have been able to get with them on an average basis.

Have a barrel with a real throat/chamber should reduce group size tremdously. The Rugers also have a very long throat to allow for swaging the 310 bullets to 308. Thus, these rifles also shoot with spotty performance.

That might be worthwhile to do...however finding 310 barrels is not easy.

Jerry
 
If you're going to go with a new barrel how about chambering it in something like the 220 russian, or the 6mm PPC?

At least then you'll know that it will shoot out to 500 yards without any problems.
 
poweredbybeer said:
This sounds interesting!! Can you explain this particular setup, where the barrel came from, how the gas system parts fit onto it, etc, etc? Better yet, do you have pics? Hell, if you've got actual photographs, I'll pay for the duplicates and you can mail them to me so I can scan them!

snip:(
Click to expand...


There is nothing to take pictures of yet here:

1~ It's a commercial mauser .308 barrel of sporter contour.
2~ The gas system parts were stripped from a donor barrel (They are still in a zip-lock baggie). I was considering a custom or modified into 2 pieces gas block.

The plan was to minimum spec the chamber & use .308 rather than .310 bullets.

I was going to build a simple scope mount or use a russian plate type.

The major problem was (and is) that none of the commercially avail replacement stocks seemed solid enough to use. There was a Chinese synthetic that had promise as a base, but I haven't seen 1 in years & I believe that they are collectable.

D
 
PICT0019.jpg


Here is the SKS we built about 10 years ago. We used a P-14 .303 Enfield barrel, an Indian flash hider and an ATI stock. The Scope is a 2.5 x 10 Tasco mildot and when zeroed on the cross hair at 100m, the second dot down = 200m and the third dot down = 300m.
It shoots 1 min or better at all ranges with Chinese ball and a little bit wider with the Czec stuff.

Scott
Dycor Special Services
 
Last edited:
How did you fit it? I always thought the reason the sks was so inaccurate was because it was basically friction-fit into the stock, with nothing holding it in but the spring-loaded latch behind the trigger group. I wonder what might happen if someone tapped the action, added pillars, and snugged it right down tight.

Did you ever chrono it? Does the extra barrel lenght amount to anything substantial?
 
We put a 10/32 bolt thru the bottom of the trigger guard into the bottom of the action, screwed it in tight and accuracy became very nice. Purely by accident we shortened the gas tube by drilling the gas hols about 1/8" closer to the reciever.This had the amazing result of causing the SKS violent action to be lessened by as whole bunch. Empty cases just fall out of the action and land right beside the rifle. The rifle is so quiet compared to other rifles on the line that you have to check to see if you fired!!

Scott
Dycor Special Services
 
What kind of scope mount is that? Looks almost like a Kalinka side mount, but I can't zoom in close enough to tell for sure.

Overall, I really like it!! That's what I think an SKS should look like, and how I hope mine turns out :cool: Whereabouts did you drill & tap for the screw you mentioned? I was thinkin' of doing it at the back end of the trigger assembly, just aft of the spring retainer pin (basically where the spring goes in the stock to pop the trigger assy. out when disassembled), which would go up through a steel pillar I'm making (which will be epoxied into the stock) and thread into the reciever at the back end, directly underneath the reciever cover pin boss. I'll have to cut & file the screw flush with the reciever to prevent it from hitting the reciever cover boss, but that's no problem.

Looks wicked m39a2, thanx for the pics!!!
 
Scope mount? It's a 1/4" piece of angle aluminium bolted to the left side of the action with 4 really strong 10/32 allen head cap screws.Then bolted to the top of that is a length of weaver base. Also acts a caseing deflector!

Scott
Dycor Special Services
 
m39a2 said:
PICT0019.jpg


Here is the SKS we built about 10 years ago. We used a P-14 .303 Enfield barrel, an Indian flash hider and an ATI stock. The Scope is a 2.5 x 10 Tasco mildot and when zeroed on the cross hair at 100m, the second dot down = 200m and the third dot down = 300m.
It shoots 1 min or better at all ranges with Chinese ball and a little bit wider with the Czec stuff.

Scott
Dycor Special Services
Click to expand...

Out of curiosity was the action bedded in the ATI stock?
 
The action is not bedded exackly but several years ago we discovered that if you run a 10/32 bolt up thru the trigger guard into the reciever it helped with accuracy greatly.

Scott
 
You must log in or register to reply here.
Back
Top Bottom