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Posted: 11/19/2007 3:56:39 PM EDT
| Some time ago, David Fortier had an article in SGN on accurizing the PSL type rifle. Of course, I threw it away as I didn't think I'd ever own one. Seems like he sent his rifle to Krebs and got it's accuracy noticeably improved. Anybody remember the essentials other than relieving the lower handguard and a trigger job? Anything that can be done to improve consistency? My rifle will shoot Wolf a solid 1.5 MOA for 3 shots. I'm going to do some more testing to see what happens as the barrel heats up and post it soon. Just wondering what can be done. |
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I know alot of people think that Cyro Treatment is B.S., but it works to a degree on my PSL. Heres the list of Upgrades I performed on my PSL initially. Installed a Blackjack Buffer Lapped the Carrier/Reciever Rails Polished the Chamber with Flitz Installed a Russian SVD Side Mount with Weaver Rail, and Adjustable Millet 30MM Rings 16X42 30MM SWFA Super Sniper Scope Turned Brake in Lathe to attain the tightest index possible (No Wobble) RSA Trigger (3#) 11 Degree Target Crown (Lathe) Installed Harris Bipod on Front of the Reciever (Not on the Handguard or Barrel) I tried every Surplus Load and Commercial Load I could find. The following results were the best of all the ammunition tested All rounds fired with 30 second pause between shots. My Average Results with Wolf 148Gr was 2.1" at 100yrds/5 shots My Average Results with My Rifles favored Surplus Load was 2.2" at 100yrds/5 shots My Average Results with 7N1 was 1.64" at 100yrds/5 shots My Average Results with Wolf 148Gr was 4.65" at 100yrds/10 shots My Average Results with My Rifles favored Surplus Load was 5.3" at 100yrds/10 shots My Average Results with 7N1 was 3.25" at 100yrds/10 shots So I decided to send out my PSL for Cyro Treatment for the Barreled Reciever. Heres the results after. My Average Results with Wolf 148Gr was 1.8" at 100yrds/5 shots My Average Results with My Rifles favored Surplus Load was 2.1" at 100yrds/5 shots My Average Results with 7N1 was 1.45" at 100yrds/5 shots My Average Results with Wolf 148Gr was 2.65" at 100yrds/10 shots My Average Results with My Rifles favored Surplus Load was 2.25" at 100yrds/10 shots My Average Results with 7N1 was 1.85" at 100yrds/10 shots My accuracy only slightly stabilized for 5 shots, but significantly improved on 10 shots. I can hold my own against almost any FAL or HK91, and some AR10's and M1A's. The Ergonomics suck, but my rifle always gets people wanting to take a shot. |
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Clandestine - outstanding! Your results for 10 rnd. groups are very interesting both before and after. Most people would probably be surprised what their rifles would do when going from 3 to 10 rnd. groups. To the best of my memory, Krebs did some other stuff to Fortier's rifle. Anybody remember? "Gunwriter", you out there? ETA: if anybody has that article, I'll buy it from you. I'll give $10 delivered. |
Glad to help. I wish i had the article. I had it too, but i cant seem to locate it. I will happily send it to you free if i can dig it up. If you have any questions at a later date shoot me a message. Chad |
Im quite interested to see what else they did to the PSL as well. I cant remember what i read in the article. |
kallnojoy, I used this one. It allows iron sight usage under the scope, and is centerline over the bore. http://www.kalinkaoptics.com/detail.aspx?ID=188 You can get a lower profile mount from kalinka than this one, but they are so low they drag on the top cover of the action. I bought that one first and sent it back. I really like the one i have. One trick I do to the side mount is I disassemble all the screws except the clamp screw, I degrease all of them and use red loctite. The screws on the russian mounts will shoot loose without thread locker. Then I degrease the side rail and grooves on the side mount. I apply baseball rosin so when the teeth form the side mount clamp down the rosin helps keep the mount from sliding.  I like Millet adjustable rings because you can perfectly center your scope to the centerline of the bore, you can also collimate your scope without time consuming filing to the rings. If theres enough interest I'd be happy to post pics after the holiday, but I dont have anyone to host them though. |
I didnt mean to imply they caused accuracy improvement, but when a bolt carrier impacts the rear trunion a buffer helps diminish the damage that would be caused without one. Mine carrier and firing pin was hitting my rear trunion hard and peening the hell out of it. Try finding a replacement PSL firing pin once its beat to crap against the rear trunnion. Youll have an expensive paperweight. Unless someone doesnt know how to rivet an AK a buffer wont cause it to self destruct. |
the peening is typical, and can be easily fixed if it becomes an issue. its worse to have the stroking of the bolt carrier to be made shorter and FASTER, therefore impacting the front trunion at a much higher rate with mroe energy behind it than without the buffer. I had buffers in almost all my AKs and after reading up on it, and hearing from others who looked further into it, I took all buffers out and sold them. bolt itself does NOT impact the rear of the rifle typically....not always at least (isnt normal occurrence) |
Look if you disagree then fine. I posted what I have seen first hand. I was talking about the PSL, not a regular AK. I have seen the threads bashing buffers, and I havent seen one poster that shows damage resulting from a buffer from a professionally built AK. More than likely they were improperly built homebulids, and the rivets gave out. Pehaps U-Drive Builds, but who knows. I fix guns for a living. I've seen 2 customer PSL's with the rear trunnion impact issue not counting mine. Both customers wound up with broke firing pins. The main issue is you cant find replacement bolts or firing pins for PSLs, for regular Ak they are abundant. The trunnion damage isnt the concern on my PSL, its the Bolt and Firing Pin damage. I dont run buffers on my regular AK's. The impact issue would be fixable if I could find a new PSL recoil spring, and not a surplus one. Im done discussing the issue. If someone has questions about my PSL then drop me an P.M. Things like this turn threads to crap and im done participating. |
Appreciate the info, that's exactly what I was looking for. Pics would be great if you get a chance. Email them to me and I can host them if you want them in the thread. |
Will do. I can send them over the weekend. Ill try to send them via P.M. if i cant get them across ill email them to you. Im glad my post was helpful. Take Care Chad |
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