PSL Bull Barrel

[[486]]

Originally Posted by hcpookie

I recall there were 1919a4 barrels made specifically for 7.62x54R. Finding one of those would be ideal!

Those were .308 bore, and they didn't correctly support the case head, so they blew up a lot of feed trays and top covers.

I'd use a .308 barrel. Just me, and I might be scaring some people, but the difference doesn't seem like much, and someone here's PSL slugged out to .309, so it ain't that much of a difference for being able to be use both types of ammo. The only added pressure is initially as the bullet is deformed into the rifling, the PSL's main pressure problem is pressure at the port. It also has the stronger bulged trunnion... Though even if it shows pressure signs it wouldn't matter much to me, I'll just handload with cast bullets... Get an M76 bolt, set the barrel back and rechamber it to .308. Mod some G3 mags to fit, or get some 7.62 saiga mags.

[Icarus]

I wouldnt bastardize the value of the M76 for a project gun.

[Coils]

Originally Posted by dogzombie

I was thinking of a project that consist of a fluted bull barrel on a PSl. Have any of you guys done this or have any thougts on the subject. Like if it would be a complete waste of time and money or just be happy with the original.

I think a heavier barrel would help a lot with this rifle.
How about modding a DP28 barrel? If they are cheap enough, they are already chambered and have a heavy wall.
I think I'd leave everything but the gas block off the barrel as well (no sights), and try to make a hand guard as free floating as possible.

Damn wish I would have gotten another one of these kits when they were fairly cheap, this would be an interesting project.

[[486]]

Originally Posted by Coils

and try to make a hand guard as free floating as possible.

Been thinking of this and came to the conclusion that a free float tube could be made, hollow out the handguard enough to get a tube in there, modify the handguard retainer to lock onto this tube rather than the barrel and attach the tube to the front trunnion.

Sort of like the free float tubes for the AR that mount the normal AR handguards on them.

[1biggun]

If you could get a .311 barrel blank you could go to town! Not sure where to find those however.

Pac-nor has .311 blanks

[1biggun]

i have been looking more and more at the 7.62x54r round and there are some reall good wild cats out there as well as some factory rounds based on it. a 6.5x54R woud be a excelent round it would likely out perform the 260 remington. A bull barrel on one of these would shoot well I have no doubts.

as far as the floating gas tube The set up I have on my varmit build just lays in a slot in the gas block and also just layes in the RSB its held in with a allen screw through a tab welded on it. one could also just rigidly attach the tube to the rsb and align it to the FSB and have a gap between the parts. a simple chamfer will allow the the piston to go in. I still have the weight of the pistion sitting on the barrel but It seems to be very accurate. I was thinking of a gas system like the AR with a gas tube running to a shorter pistion that is clear back at the RSB. the line can be flexiable some how. It may be a step backward in reliabilty but it might be more accurate. them AR,s get pretty damm accurate.

also keep in mind that if the barrel is to big were it goes through the manditory modified RSB it will interfer with the botttom of the gas tube were it sets down in the block .

krebs has GB,s that will allow a oversize barrel BTW

the lower hand guard can be floated by suporting it with a brace from the reciver to the guard. leave off the front munting stuff. I wood guard with a rod run inside of it likely could be made that went into a plate set inside the reciver is doable as well if you wanted it to look stock. my next build my have a round aluminum or carbon fiber tube that looks simular to a AR float tube. Im going to incorperate the mount into the spaace between the trunion and the bottom of the reciver.

[1biggun]

[Only registered and activated users can see links. ]

If I had the cash Id get a few of these oversize blocks. there bigger than a fal block and would allow a pretty heavy barrel. my target/ varmit build is .940 at the GB but the Krebs block at .785 or 19.95 mm would allow a good compromise between light to be accurate and to heavy to carry fluting a 20mm barrel would bring the weight back down closer to a standard barrel. to bad Saiga shot gun GB,s are not avaliable.

Im on the fence about fluting as well. the lighter weight is a plus but barrel manufactures dont agree on the benifets. there is more surface area for cooling but there is also stress induced in the barrel when fluted. Im considering a heaver fluted barrel on the 223 weiger clone kit I got from CFS. I want a light carry around gun that is more accurate.

[patjsimpson]

You could rechamber a Romanina RPK barrel like the ones at copes. Not sure what the twist rate is on those though.

Pat

[[486]]

Originally Posted by 1biggun

as far as the floating gas tube

I was more of talking of a tube to support the handguard, that the barrel goes through. Like the "FF-DCM DCM National Match Free Float Tubes & Handguards" on this page. [Only registered and activated users can see links. ]

[1biggun]

I was more of talking of a tube to support the handguard, that the barrel goes through. Like the "FF-DCM DCM National Match Free Float Tubes & Handguards" on this page. AR15/M16 - Handguards & Free Float Tubes

It likley can be done. Ive looked into a simple aluminum tube that threads onto a mount or attaches in some way, that would slide in between the trunnion and the reciver. One of the things I dont like about the NDS reciver is that the serial numbers are right were i want to drill and modify.