Need help/advice on a wandering POI problem

[Edward Horton]

1. Check that the front handguard is not creeping forward under recoil, thus fouling the foresight assembly - this is the prime cause of vertical POI movements in a No4. This is why you often see staked front bands on a No4.

2. Apart from the "down pressure" at the muzzle, ensure that the barrel has free vertical movement inside the barrel channel. Often a "high point" inside one of the handguards is the culprit - the wood coming into contact with the barrel as the rifle heats up.

3. Check the barrel channel itself for high points - sometimes just a lump of old cosmoline. One method is to dust the channel and handgaurds with talcum powder - blow off the surplus - then reassemble the rifle with the metal parts lightly oiled. Move the barrel up and down to simulate firing shots, then dissemble the rifle to see if there are any obvious touching points.

Thunderbox

Is your saying "down pressure" a difference between British and American English like saying anti-clockwise and counter clockwise. In American English the fore end tip is pushing "upward" on the barrel and thus called "up pressure".





Thunderbox I mean no disrespect but I have read this from other British forum members also and it is a little confusing on this side of the pond.

As an example the American Remington 700 standard bolt action rifle has 3 to 9 pounds of "up pressure" at the fore end tip of its stock. This means the same as the above section from the 2002 Canadian No.4 manual, and the wood stock is pushing upward on the barrel.

NOTE: Before I wrote this Thunderbox I ran out to my truck and made sure the steering wheel was on the left hand side of the cab.