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1963 Chinese SKS vs AR15 , M16, M4 in IPSC / USPSA / 3 GUN Rifle Competition By: ACEeyeED A43209 August 15, 2007 Revisions 10/14/2007, 09/25/2008, 6/22/2009, 5/14/2013 , 8/05/2013 Copyright (c) 2007-2013 all rights reserved
Thoughts and Observations: I can say the performance of my SKS was limited to myself. If I had the time to practice as much as I do the handgun, I could be much faster. By no means is the SKS a bad performer. This report is the beginning. I will add more detail to see if the corrective actions identified get cleaned up.
Now if you do the work yourself, here is what I spent. 100$ for the SKS early 1990 purchased. Mods, Scope mount, 923r compliance parts, Spring kit, Stock, Scope, Bolt mod, Sear tune.....added 300$ more. So for 400$ it is sweet. Still cheaper than the 550$ in the gun shop without the mods.
What I forgot about was the wind effect on a 7.62x39 at 10 mph crosswind will be 6 inches from aimpoint. No wonder I was missing.
I have shot the SKS in IPSC/USPSA 3-Gun and rifle matches, for 8 matches.
Some with open iron sights , then switching to tactical with the addition of the scope.
First Scope was a Chinese red star 4x20 it broke .
Second - Simmons 1.5 to 5 shotgun scope not bad but I dropped the receiver and bent the scope. triangle reticule.
Third and newest - Centerpoint 2x7 32 scope with red / green illuminated mil dot reticule.
Just added the Tasco Red Dot. 2013 , Tapcom Intrefuse stock with rails, and trigger tuning.
Added CHOATE Drill and TAP Scope Mount
The SKS shooting the same round as the AK47 is a bit more accurate because of longer barrel.
NEW BOLT for tactical reload with bolt closed
The SKS has to have the bolt back to load a new mag. I have a Bolt that can allow change out of mag with bolt closed. This will help make tactical mag change outs faster. Mag changes will still be slower on the SKS due to the Duck bill connector. More info on bolt. Captain of a Crew of One: Evolution of a Homeland Defense Weapon 3 Duckbill see the You Tube links below. The Captain was nice enough to produce a 5 part video about an hour that goes over the Trigger and sear work. At best 25% of the population are handy. This means most of you should never try any mods.
The machinist and will have 2 bolts modified to accept mags when the bolt closed. Should be finished by end of sept 07. I will be testing the bolts and their new ' H ' Buffer for the SKS. Contact:
Mark Holloway, 25thCTC
The Bolts I bought, were a bit long on the bottom, which gave inconsistent results. Sometimes the disconnect would not work causing trigger lockup. Eureka. It worked, I ran 150 rds of wolf FMJ and HP with no jams, lockup etc. H Buffer worked fine. Need to do more bench work to check if the group shot are tighter.
Results of the testing after the changes: Sight in at 50 yd using Wolf 7.62 x 39 154g SP This was done seated , with sand bags front and rear Scope is a 1.5x5 x 40 set to 5x my last two perfect 2 groups of three are shown below.
Below: 100 yd Test 9/2008 Winchester FMJ 7.62x39 123 gr.
7x scope SKS Sandbag bench rest group 1.949 inch. in the top 20% of SKS.
Quick test after the trigger tuning of Sear above, last 3 shots come in at 1.4 inches (2013) On the right Golden Tiger at 100 yds.
200 YARDS Using bench, can hit a Clay Bird which is 4 inches. Usual target at 200 yards is a 6 inch round plate. Getting used to the Vtac barricade.
Why do I use the SKS in competition ? FUN, Ammo cost half as much, I only compete 3 times a year in rifle, and at least I do not come in last. I recommend the TAPCO 20 rd .
Needs a day or two of break in.
For break in spray silicone into mag , load the mag
with 20 rounds, let set over night Corrective Actions: Things to do
The RIFLE is now running 100% Clean in matches no issues!
Chinese SKS 7.62 x 39 TUNEUP - ACCURIZING Trigger Job
Reading Materials:
Jamie Mangrum did a world of work on his www.surplusrifle.com . Has detailed procedures for the SKS and Enfield SMLE helped me a great deal. His site was shut down a few years back and the only way to find the articles is to look on the wayback archive. Collecting and Shooting the SKS Carbine - HISTORY
These were the names of the articles Collecting and Shooting the SKS Carbine - Lightening the SKS Trigger (Trigger Job) Collecting and Shooting the SKS carbine Lil-Miss part 2
In Depth Trigger Work Info Video on SKS Trigger Job Purchased Products: Wolffe Spring - SKS Performance pack $10> Initial results from the bench using Winchester White Box 7.62 x 39, at 50 yards, open site , groups were 1 3/8 inches smaller after the trigger job.
Wolffe has spring kits for for many firearms.
SKS 7.62 x 39 AMMO:
I use Wolf and Winchester white box. Now testing out GOLDEN TIGER in the projects section
Wolf 7.62 x 39 - 154 sp Aug 2007 - preferred for IPSC Major Chrono tests 10 rds avg 2136 fps makes 328 major ipsc / 325 floor Stock test - 2104 fps Chinese SKS 1963 20 inch barrel temp - 95 f Hum 75% Alt 850 bar Sunny, no wind
SKS Owners - Murrays Gunsmithing makes a firing pin aand prevents slam fires.
SKS OWNERS You NEED THIS! ++ 2007, Old version recall. New version available!
This “New For 2007” replacement firing pin is designed after the original
Russian design. And, it will fit all SKS’s. Even pre-51 versions. But, with
pre-51 versions you’ll need a different spring. This is due to the hole in the
bolt being drilled deeper in “later” versions. This new firing pin will
eliminate slam-fire and uncontrollable full-auto incidents! And, it will allow
the use of “soft primered “American” ammo, or reloads.
Ben was on Discovery Channel MythBusters.
I have experienced a slam fire from the red sealer used on some rounds at the primer. It gets gummed up and makes the firing pin not retract.
LEGAL & SAFETY INFORMATION
1. BE CAREFUL 2. PAY ATTENTION DISCLAIMER : YOU UNDERSTAND THAT ENGAGING IN DEFENSIVE PISTOL TRAINING, SHOOTING, and FIREARM RELATED ACTIVITIES CONSTITUTES YOUR INVOLVEMENT IN A VERY HAZARDOUS AND DANGEROUS ACTIVITY WITH ACCOMPANYING RISKS OF PERSONAL INJURY OR DEATH AND LOSS OR DAMAGE TO PERSONAL PROPERTY, AND YOU HEREBY VOLUNTARILY ASSUME THOSE RISKS. I (William E. Fowler III) AM NOT A Certified Firearms Instructor, or Gunsmith. I am a certified range officer. You assume all risks and liabilities. ALWAYS BE CERTAIN THAT YOUR FIREARM IS UNLOADED BEFORE WORKING ON OR CLEANING IT. |
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SAFETY FIRST - when you are dead, you don't get a second chance. |
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©Copyright 1998 - 2013 All Rights Reserved "AceEyeEd" , Owings Mills, Maryland Updted on 9/01/2013 by Ed Fowler
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FIREARM
OVERLOAD
To
have the magazine changes as fast as possible I developed my own SKS
plastic magazine Holders. This version showing dual holder.
