I recently purchased new machine screws for the action of my CZ-452, and on reading a post on this or perhaps on rim fire central, ordered myself a Wheeler FAT torque wrench screwdriver. Some general guidelines for torque settings are on the back of the package. Are there other valid sources for torque specs on various firearms and air guns I should be aware of? Thanks.
In pursuit of accuracy . . .
- Thread starter TEC
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Alpacca 45
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If you are interested in accuracy, get a copy of Vaughn's "Rifle Accuracy facts" published by PS Magazine.
Vaughn explains things much better than I can.
Vaughn explains things much better than I can.
krs
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Torqueing action screws will not provide accuracy in rifles in and of itself. In a well bedded rifle it might have no noticable effect at all.
Torqueing the action screws provides a means to find a repeatable tightness of those screws once it's found that there is a screw tightness "sweet spot" that brings about the best possible accuracy from a particular unbedded stock/action/barrel.
It calls for experimenting - select a torque, tighten your screw(s), shoot groups. Select a different torque, tighten the screw(s), shoot groups. If you find a torque setting that allows the rifle to shoot better/smaller groups - good. Actions that use more than one screw sometimes respond well to different levels of tightness in each screw
The best possible accuracy will be obtained from a stock/action that cannot move at all and does not place the receiver under the effects of any uneven force from any direction. It's why the benchrest guys glue their actions firmly into their stocks using methods that do not induce any torsional force to the action at all. But when that is not desirable other ways are used to be sure that the action will not move in relation to it's stock during firing. One of those is adjusting the tension of however many stock screws there are, but it's just the beginning place in the never ending search for perfect accuracy from rifles.
The book mentioned by Alpaca might be the best single source of information about all of this, and you should be aware that the topic has been the lifelong project of many fine shooters and gunsmiths before us.
Torqueing the action screws provides a means to find a repeatable tightness of those screws once it's found that there is a screw tightness "sweet spot" that brings about the best possible accuracy from a particular unbedded stock/action/barrel.
It calls for experimenting - select a torque, tighten your screw(s), shoot groups. Select a different torque, tighten the screw(s), shoot groups. If you find a torque setting that allows the rifle to shoot better/smaller groups - good. Actions that use more than one screw sometimes respond well to different levels of tightness in each screw
The best possible accuracy will be obtained from a stock/action that cannot move at all and does not place the receiver under the effects of any uneven force from any direction. It's why the benchrest guys glue their actions firmly into their stocks using methods that do not induce any torsional force to the action at all. But when that is not desirable other ways are used to be sure that the action will not move in relation to it's stock during firing. One of those is adjusting the tension of however many stock screws there are, but it's just the beginning place in the never ending search for perfect accuracy from rifles.
The book mentioned by Alpaca might be the best single source of information about all of this, and you should be aware that the topic has been the lifelong project of many fine shooters and gunsmiths before us.
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