No 4 barrel lift pressure

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11-21-2009, 03:15 AM
PrinzEugen

No 4 barrel lift pressure

Quote:

Originally Posted by PeterLaidler

The weight required to lift the barrel from this muzzle seating should be between 3 and 7 lbs. If the weight is below this, the barrel bearing at the reinforce should be lowered. Notice that! The front trigger guard screw is the pivot when fitting fore-ends. If the weight is above this, then the body and reinforce seating will be raised.

Hi All - this is a quote from Peter's article in fitting a new forend - the question I have, because I'm a bit dense is about adjusting the rifle if you feel the pressure needed to lift the No 4 barrel is lower than the above. I didn't really understand all the terms - what and where is the barrel bearing reinforce seating? How is this adjusted to increase the pressure? Thanks!
11-21-2009, 04:43 AM
gunner

Hi,

I made it this way with small cork layers, works great. From Thread: My N04 Mk I* after bedding

The barrel is the original 2-groove barrel from Savage. I added the acrylic paste around the system without removing any wood. As i purchased the rifle the system was loose for the reason of wood shrinking. I only filled up the shrinked wood in the area that is shown in the pic. The barrel channel is complete free, there is no bedding at the front sling swivel. I bedded the barrel in the reinforced front end of the forestock with an piece of cork that lays u-shaped under the barrel. You have to measure it in that way that the barrel dont touch the upper handguard. I added a pic and the drawing of the cork piece. You have to excuse my poor drawing skills. Hope that helps you a bit, if not please ask again. My load is a 180grs.S&B FMJBT with 37.7grs N140, CCI BR-2 primers and a COL from 77.8 mm.

Regards

Gunner
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11-21-2009, 07:10 AM
jmoore

Quote:

Originally Posted by PrinzEugen

- what and where is the barrel bearing reinforce seating? How is this adjusted to increase the pressure? Thanks!

The "barrel reinforce" is the fat part of the barrel just fwd of the action extending out about 3-4 inches maximum (75-100mm for you 7.7mm bore type people). Often its only 2" or so.
To increase tip pressure, remove wood in this area using proper inletting techniques.