How To Glass Bed Your Rifle - by Randy Boyd
Apr 14, · Glass-bedding a rifle is a great way to improve accuracy, but there are important tips to follow to ensure it gets done correctly. Glass bedding a rifle serves many purposes; in wood stocks it acts as a sealer & both gun stock types it gives the action full contact with the stock. Glass bedding a rifle conjures up all kinds of images — from slapping thick peanut-butter-like glue into a stock to dabbing a bit of glass to reinforce the recoil lug area.
I took the plunge and decided to do a glass bedding job on my Winchester Model 70 rifle. I bought Brownells Acraglas, followed the directions and got good results. But, being my first attempt, it was pretty messy when I got the barreled action out of the stock.
I used a file and sandpaper to clean the extra Acraglas that leaked into the magazine hole. Despite really painting on the release agent included with the kit, I had a heck of a time getting the trigger guard screws out and spent more than 30 minutes trying to pry the action out of the stock. When you pull the barreled action out of the stock, inletting black will remain on all the high spots of the stock that are in contact with it.
If the rifle is to be free-floated, just remove the high spots. This step needs to be repeated after final bedding.
I have used the release agent that comes with the kit on hundreds of rifles what is ms contin vs oxycontin never had a problem.
One key is to make certain the threads of the screws are saturated with the agent as well as the screw holes. I recently used Brownells Acra-Release and found it to be faster and easier than painting on the liquid release, and it cleaned up with less work.
It also gets into all the small crevices of the action more efficiently. There are a number of ways to secure the action to the stock once the Acraglas is applied, and all work well. I prefer to spray the inletting guide screws liberally with Acra-Release and attach them to the barreled action before placing it into the stock for bedding. Rather then screw the trigger guard into place to hold the action while it cures, I prefer to use surgical tubing. When I tried a medical supply company, it refused to sell it to me.
Fortunately, Brownells also carries it. With the action set into the stock and the Acraglas in place, just wrap the tubing securely around the stock and over the front of the receiver, and tie it off. I do the same over the rear of the receiver. I apply a bit more pressure with the front piece of tubing to keep from placing any torque on the receiver. You do not want how to cope with death of mother areas in contact with the stock after bedding.
The key what is glass bedding a rifle for proper bedding success are the rear of the lug, the bottom of the receiver and the top of the stock area that supports it, and the front of the receiver forward to include about 3 inches of the barrel contour. The bedding area that supports the rear receiver screw is more for strength and stock stability. Reconsider prying the action out of the stock after bedding.
Instead, place a towel on a wooden table and give the front of the barrel a good whack. Of course, remove the surgical tubing before doing this. If you screwed up and forgot to use the release agent in all the necessary areas, or a stubborn barreled action refuses to break free, there is one possible solution you can try.
Put the whole rifle in a freezer for 24 hours. The metal will contract and break loose. Bedding a rifle is not a hard process, but following instructions is important. To advertise on Shooting Illustrated, visit nramediakit.
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How To Glass Bed Your Rifle - by Randy Boyd. When you fire your rifle, an upward motion of the barrel is created which causes a pulling action on the stock. Dependent on the caliber, this can be quite violent. If your action isn’t bedded firmly into the stock, this movement can create the opportunity for your barrel and stock to collide, changing the point of impact on your shot. Mar 07, · Learn exactly what "glass bedding" and free floating means, what the process seeks to do, and how it can help you to realize the full potential of your gun's. Sep 04, · Glass bedding is a major component of the ultimate bedding package for rifle accuracy. Larry Potterfield, Founder and CEO of MidwayUSA, demonstrates glass be.
Rifle bedding is fundamental to rifle accuracy. The term bedding refers to the fit and stability of a barreled action within the rifle stock. If the fit and stability of the metal work in relationship to the stock is poor, the rifle will be in-accurate. Bedding a rifle with epoxy resin is the optimum method of obtaining a correct fit, long term stock stability and optimum rifle accuracy.
In order for a rifle to shoot accurately, the number one rule is that everything needs to be the same with each shot. There are several variables to rifle accuracy and each variable must be addressed.
The shooter needs to be in the same position for each shot, each cartridge must be the same as the one before it, and the scope must hold the same zero while the rifle needs to produce the same results each and every time. With every shot, the barreled rifle action moves and vibrates within the rifle stock. The best way to picture the barrel is by using the analogy of a baseball pitcher. As the pitcher throws his ball, the slightest difference in his point of release will change the point of impact at the batter.
The rifle barrel is just the same and "whips" with each shot. If the barrel is unable to whip the same way each time, the bullet will strike to a different point of impact. The rifle action also undergoes movement and stress. When a shot is fired, the pressure of the cartridge produces recoil within the stock, the action is forced backwards and then returns forwards. If the action does not return the same point after each shot this term called "battery" then the rifle will be in-accurate.
If any areas of the stock are pinching or exerting excess pressure against the barreled action, accuracy will be poor. To set up the best platform for accuracy potential, gunsmiths, custom rifle builders, target shooters and hobbyists "bed" the rifle action and free float the barrel.
Bedding involves filling the gun stock with a strong as steel resin, the action is then set down into the resin which when dry, creates a mirror image of the action. The mirror image of the action is a precise bedding platform which allows the action to recoil and return to battery with each shot. This explanation is however oversimplified as several areas of the action need to be relieved to create relief points and allow for the piston like movement of the action within the stock.
Free floating the barrel involves removing all wood or plastic along the barrel channel so that the barrel has no contact points with the barrel to interrupt its natural whip. The only point of contact should be the bedding under the barrel "parallel" closest to the chamber. This helps ensure that the action is not having to hold all of the weight of the whole system.
Never ever free float a plastic stock without bedding the rifle. An unbeddded free floated plastic stocked rifle may produce extremely poor accuracy. Unfortunately, bedding is too costly a procedure for most rifle manufacturers to perform. However, exceptions include:. Semi custom rifles - These may have some form of expoxy bedding however in recent years, some manufacturers have used blank actions for bedding rather than the actual action that comes with the rifle in order to speed up operations not having to clean epoxy from a finished action.
The blank method is acceptable but may not provide the true custom fit that one was expecting to pay for. If the operator employs flawed methods more common than you might expect , the rifle will not produce optimum performance.
Epoxy bedding at the recoil lug - As found on the Winchester, Browning and Weatherby rifles. Appears simply as a dollop of epoxy much like a hot glue gun at the area of the recoil lug. This method can prove sufficient but in some instances, the bedding will loosen over time. This method can also create pinch points leading to double groups but is generally better than having no bedding whatsoever. This point of force is called pressure point bedding. Pressure point bedding will usually allow a rifle to shoot groups of between 1.
This level of accuracy is adequate for close range shooting using a cold barrel but hopeless for moderate to long range shooting. Pressure point bedding is counter productive to accuracy when firing multiple shots- as the barrel heats up, it move upwards due to the force of the pressure point which results in stringing shots.
On wood stocked rifles, pressure point bedding will eventually become a problem as moisture shifts the stock around.
To check whether your rifle is bedded, remove the barreled action from the stock. The bedding is instantly recognizable as a layer of resin that appears as a mirror imprint of the action. Be aware however, that not all bedding jobs are a success. If the rifle has been bedded prior to your ownership of the rifle, but the rifle is in-accurate, it may well need to be re-bedded with better attention to detail.
Please also be aware that many companies now advertise their production rifles as factory bedded when in truth, the rifles have no such bedding. A common marketing tool is the use of the term 'pillar bedded'. Unfortunately, the addiction of two steel tubes pillars does not in any way constitute a bedding job.
As suggested, true bedding is recognizable as a layer of epoxy within the stock which produces a mirror imprint of the action.
But also as suggested, looks can be deceiving. To be successful, the bedding job must feature a mixture of contact areas combined with areas of critical relief. Terminal Ballistics Research and the author take no responsibility for the use or misuse of any views, opinions or information expressed in this article. MatchGrade Synthetic Stock Stabilizer instructions. Hold that Forend! Effective Game Killing. Basic Rifle Accuracy and Ballistics.
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