Barrel Pressure Bedding

J

JEC

CGN frequent flyer
Rating - 100%
27   0   0
Location
Alberta
What is the best method to determine if placing a "bedding block" under the barrel will be beneficial?
If deemed desirable, how is a "pressure block" created?
 
Trial and error..... you try it with pressure and you try it without pressure....

Hang 10 pounds from the buttstock and hold the forend in a vise and glass bed a pressure point back towards the tip.....
 
Last edited:
I installed a small channel inside the foreend and put a screw adjustable pressure bedding block in it. The long screw is adjustable from the end of the stock and runs parallel to the barrel.
The block slides along the barrel and Tunes it like a guitar fret.
Jim
 
Years ago in a gun mag I saw an article describing a similar arrangement for adjusting the pressure point on a barrel. The author installed a small screw on either side of the forearm at about 4:00 and 8:00. I can't remember why 2 screws was seen as an improvement over a single screw in the bottom of the barrel channel, but I do remember that small changes to the barrel pressure had a dramatic effect on the group size.
 
Boomer said:
Years ago in a gun mag I saw an article describing a similar arrangement for adjusting the pressure point on a barrel. The author installed a small screw on either side of the forearm at about 4:00 and 8:00. I can't remember why 2 screws was seen as an improvement over a single screw in the bottom of the barrel channel, but I do remember that small changes to the barrel pressure had a dramatic effect on the group size.
Click to expand...

I bought a 22/250 last year that had a set of pressure screws in the forend, and my father once told me of an adjustable collar that some used to install on their rilfes.

I am guessing that the two srews would help center the barrel better in some cases....
Cat
 
A pressure point should actually work like a V where the barrel always has to return to the same spot after firing.
 
Some Brno target rifles, and Rem 40x rifles had adjustable bedding screws. One more variable to try to control.
 
Once upon a time target 22 rf rifles were elecric bedded.
They had two bedding screws as above then a test light was attatched to the barrel and the screw boss. The screws were then (individually)turned in untill the screw touched the barrel and the light came on. The screws were indexed (or has detent clicks).

The shooter then turned each screw in (equaly) a set number or portions of turns.

They experimented with the upward pressure created untill the best accuracy was obtained. This made ammo manufacturers very happy as there is almost no end to potential combinations.I dont think anyone ever felt they had found exactly the magic combination. AND..at the end ot the shooting day everything was returned to "O"-so as not to allow a set to develope. The setting was recorded and cranked in at the start of the next shooting event.

Then someone decided heavy and shorter barrels were better and the fun ended.
 
You must log in or register to reply here.
Back
Top Bottom