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Posting on Forum!
Effective Immediately No one is permitted to post any adds on the Forum without permission! This has become necessary because of posting of Porn links, and drug adds in our forum! The forum is locked to members only for posting until we get it set up to prevent these type of postings! ANYONE abusing our forums to sell drugs, porn or any unrelated or unauthorized products or material will be PERMANENTLY BANNED!!!!!!!!!!!!!!!!! |
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Posting on Forum!
I sorry for the inconvenience but we have had to lock our forums temporarily because we have been spammed with adds for Porn and drugs on our forums! We are working on protecting our site from those who would abuse it! As soon as we get this problem fixed we will open it to discussion for those we hope will participate!
We really want to hear from you so please don't give up!
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M1A/M14 STOCKS AND MOUNTS
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Now know I that the LORD savethee his anointed; he will hear him from his holy heaven with the saving strength of his right hand. Psalms 20:6
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Here at M1A/M14 Heaven we specialize in all your tactical needs for the M14 battle rifle. Our main product is the VIRON 100, 101, 102, 103. The 3 different models allow you to personalize which kind of railing system best fits your needs. We also offer many utilities to go with your personal stock such as vertical grips, pistols grips, and light mounts. As a company we are alway researching and designing new products not only for the m14 but for other weapons aswell. Look at our ABOUT US section to learn about the company and develpment of VIRON. We also offer our exclusive ghost cam painting design with 3, 4, 5, and 6 color options on all our products.
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| Barrel warping and the Rifle Barrel Control Bearing System |
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 GREAT NEWS for all those who have suffered from the same frustration as we have for years. How many times have you adjusted your scope only to find it was off again after you shot several more rounds. or it cooled off. So you adjusted it again, and again, and again! never seeming to be able to count on it to stay Zeroed. There is a very simple explanation for what is happening.
It is something we've known about for years but could never seam to find a simple answer for. The barrel is warping as it heats up from residual stresses left after the stress relieving heat Treatment. The stress is produced during the making of the steel, the barrels are cut from. Also the tooling to turn the steel rod into a rifled barrel can cause stress in the barrel. Barrels are generally heat treated to relieve these stresses sometimes twice. But it is common for there to be some residual stress left in most barrels. It's not because barrel manufacturers don't try it's just the nature of the process. As the barrel heats up from rapid firing these stresses cause the barrel to warp or bend changing where the bullet is pointed when it exits the barrel. So if you Zero your barrel when it's cold as the barrel heats up the bullet impact moves as the barrel warps. Since the scope doesn't move with it you aren't hitting where your aiming. We call this group walking, or point of impact shifting. When the barrel cools back down the barrel contracts to it's original position and your point of impact with it! Glass bedding the action and barrel in the stock has worked for some to some degree. But doesn't always work if you shoot a good number of rounds in a relatively short period of time. This is the reason for the popularity of free float barrels. Which again is hit and miss in terms of consistency if you shoot allot. So Cryo treating came along, it was going to solve the problem. Tried it, it didn't work! Didn't hurt anything not a bad idea anyway for other reasons but doesn't stop barrel warping in many barrels. The stress created in a barrel during manufacturing is common knowledge. Whether or not all that stress can be relieved from Heat or Cold treatments seams to be questionable at best. So we're left with letting the barrel cool down between shots to maintain consistent ZERO. Or squirting gases in the barrel to cool it. Carbon fiber wraps if you can afford them, and so on. If you have the time to tweak your gun and you don't have to shoot hard and fast accurately you can get those tight groups consistently. But if you had to take it into combat and fire a couple hundred rounds accurately you'd probably be in trouble! I like the Carbon fiber barrels but I don't think I'd want to have to depend on them in that situation. The carbon fiber can take the heat but the resin which holds it together is the potential weak point. We have a resin that can take 600* F for extended periods of time but It remains to be seen if you can trust it with your life in combat! Or even if you are a zealous plinker who likes to load a Several 30 round mags and have a go of it! What if you don't have the time to tweak your gun and get used to where it shoots under different conditions? You just want to go out and have it shoot with in the same inch or so every time at 100 yards. It doesn't have to be that complicated! Free Float barrels sound good but if they have any residual stress or heat unevenly THEY ARE GOING TO WARP! Unless you have an invisible force field to keep them in place! So what is the answer?
Plan for the worst! Most barrels warp after shooting enough to get them fairly hot in many cases 5 - 10 rounds in as many minutes. So we have built a Patent Pending System to control that warping. We learned the hard way that barrels also expand and stretch as much as 3/16" or more as the bullet travels down it at supersonic speeds. The drag from the bullet pulls the barrel and especially light barrels stretch. If you try to restrict that expanding and stretching the barrel will flex between the receiver and the point at which it is restricted. Causing it to warp, or whip. In the case of warping the expansion keeps the barrel pointed at a different angle in relation to the site until it cools down and contracts to it's original position. In the case of whipping it simply bends while the bullet is passing through the bore. This is why you have to keep adjusting your scope. Because the barrel keeps pointing somewhere else as it expands and contracts.
This is why Free Float barrels seemed like the logical answer. Nothing to restrict or press against the barrel to cause it to point somewhere else. The problem is there is nothing to keep it from warping either! So what's the answer?
Note: Check Out the Pictures of the Testing of the Barrel Control Bearing System with the Viron M1A stock and the 6.5 Grendel on the Comparison testing link!
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| 6.5 Grendel Accuracy test |
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Here it is our accuracy test for the 6.5 Grendel!
We built a 6.5 Grendel from parts starting with the 19" Stainless barrel and bolt Combo from Alexander Arms.
Rock River lower, CCA butt stock which I'm switching out for the black now that I got some more in. and all the goodies. Including free float Hand Guard.
Got it all put together and headed for the range.
I sited it in at 50 yrds, then 100 cleaning the barrel between groups, then cleaned barrel every 5 rounds for break in. Barrel didn't foul to bad for new barrel much less than the M1A's. Fired a 5 round group and noticed it walked to the left about 3". Cleaned barrel. Fired another group of 5 and it walked left and down around 3".
Cleaned bore let it cool and fired a 10 round group it shifted left around 5" and slowly came back a couple.
I snugged up the scope mount just to make sure and cleaned the bore. Still not getting much fouling so didn't seam to be internal. Fired 10 round group and it settled down up and down but walked left 3".
By this time the barrel should be broke in some what but even if it wasn't it usually gives you a sporadic pattern not one that shifts as the barrel warms up.
After using all the ammo I brought with me I came to the conclusion I was getting barrel warping causing the group to shift as the barrel warmed up. We had ordered the fluted barrel hoping it would be less likely to warp. End of test 1.
From our experience with the M1A I had already found a fix for this problem, Question is could I build a bearing System which could control barrel warp and whipping using the Free the Hand Guard. I knew I could build a Hand Guard System that would work as long as I didn't get to much flex at the Receiver. Next step build and see if would work.
Having built the Bearing System and some Modifications to the Hand Guard I installed the System. Back to the range.
I had changed nothing except the Hand Guard, and added the Bearing System. I also cleaned the bore.
I hadn't moved the scope and decided to leave it alone until I could see if it walked. So I fired 10 rounds as quick as I could get back on target somewhat. the group was a little over 2" most of which was me I think as I wasn't aiming carefully. Some of the time my site picture was very blurry from mirage which would explain the variation up and down. left and right the group wasn't bad for shooting that quick. I cleaned the barrel and handed it to my brother. I figured I ought to let Him shoot it since it was His gun. He shot a 10 round group as quick as He could again a little over 2" more up and down than left and right probably due to mirage and a lack of concentration. His group was farther left and as we would discover later His face placement is a little different than mine and He consistently shot left of my Zero. This is what they mean by Parallax.
We were getting excited as it was a big improvement over the first time out. The Bearing Control System seemed to be working very well. I cleaned the bore and settled down to shoot a group semi carefully. I shot a 5 round group taking a little more time to aim, I chose the small 1" orange dot probably not the best Idea as it wasn't as easy to see if it was centered between the cross hairs as the bigger black dot. Still the group was just over 1" tall and 3/4" wide. I cleaned the barrel and my brother shot a 5 round group which was sub MOA. even thought His was left and high of mine again because we look through the Leupold Mark 4 a little differently.
We were having fun now but since I plan to plate this barrel with the VIRON plating I decided not to make cleaning it any harder than necessary. We also checked Velocity and got an average of 2550 FPS. Next step is to plate the bore and tighten it up just a bit and reduce the friction and wear dramatically.
Note: Check Out the Pictures of the Testing of the Barrel Control Bearing System with the 6.5 Grendel on the Comparison testing link!
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| VIRON GEN 3 ACCURACY TEST |
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Finally I have some results from the comparison test of the same Springfield action used in the SAGE stock in the first test. I had been waiting to get some Black Hills Gold but figured I was running out of cold days and decided to buy some 180gr Fusion hunting ammo off the shelf and head to the range. I had been there 3 times in the last couple months but there where a 1/4 mile of 3' snow drifts. I only shovel my driveway when my wife goes out and starts doing it to make me feel guilty! I figure that's why I bought a 4 wheel drive! So I wasn't about to shovel 1/4 mile dirt road to get to my bench.
When I got there there where still some frozen drifts but it was passable.
It was ZERO when I got up and only 7* when I got to the range so I set up the vise and placed the gun in it I let it set outside for 40 minutes while I set in the warm truck and listened to music. It had warmed up to almost 10* when I got ready to shoot. and the gun was cold! there was a 10-20 Mile per Hr. cross wind from right to left! It made it feel much colder than 10* .
I pealed back the mitten flap on my hunting glove to get my fingers out and placed my finger on the trigger BURR! My site picture was blurry and I tried to adjust my eyepiece but couldn't get my cross hairs focused. I went ahead and fired 5 shots and the group was sporadic but it kept coming back to ZERO.
I decided to adjust my eyepiece again and moved it back toward the center and it cleared up. I normally have it almost all the way out. At 49 I have good and bad eye days if you know what I mean. I guess this was a better than normal eye day! I fired 5 more shots and the group tightened up considerably. It helps when you can tell where your aiming! I trotted down to the target to mark my shots and trotted back. I wanted to keep the barrel warm or warm me up at least! I guessed up 3" left 4" adjusted my scope and fired 10 shots in around 3mins. 10 secs from setting down to spotting the last shot. I fired a couple shots a little quicker than I intended as my finger was getting numb and I couldn't tell how much force I was putting on the trigger! 1 of the fliers was a result of this and 1 was because my site picture was still cloudy from the last shot! The other was the barrel or the Ammo. 7 out of 10 where in a group just over an inch.
Keep in mind I was quick shooting in order to heat up the barrel as much as possible to see if it would walk of ZERO as it heated up! The shots following the fliers kept coming back to ZERO! This is the best group this gun has ever shot! Keep in mind it is a standard GI contour Springfield barrel. I had made no other modifications to the action only changed stocks.
This test shows the Barrel control system works as designed. We have used the Carbon fiber stock as a ZERO reference for the scope mount because carbon fiber is thermally stable. It doesn't expand and contract at near the rate of metals so the optic is always pointing at the same spot in relation to the stock. Then we control where the barrel points with the stock while letting it expand, contract and stretch as the gun is fired.
This means predictability! Knowing where your gun is going to shoot no matter what the weather or how many shots you've fired is as important as your skill!
It doesn't matter how good you are if the gun doesn't shoot in the same place every time! Even if you have a few fliers that isn't as critical as returning to ZERO instead of group walking. Group walking is where your group moves as the barrel heats up and stays there until it cools back down!
Note: Check Out the Pictures of the Testing of the Barrel Control Bearing System with the Viron M1A stock on the Comparison testing link!
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As we strive to help you get the most out of your M1A, M14, Socom
we also want to help you learn from the mistakes made by ourselves, and others in the industry.
Note: Check Out the Pictures of the Testing of the Barrel Control Bearing System with the Viron M1A stock and the 6.5 Grendel on the Comparison testing link!
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Posted by Matthew on Thursday, December 27 @ 20:54:57 MST (713 reads)
(Read More... | 4940 bytes more | Score: 3.28) |
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