Pillar bedding discussion..
What is the definition of pillar bedding as it relates to the M1A?
Is pillar bedding an advantage?
These two questions always bring about different answers and opinions, leaving the subject subjective...
The advantage of pillar bedding and how to best achieve it has been discussed at lenght. My argument, or position, concerns the mateial/materials used to form the pillar.
As an example: Speaking of the receiver heel that has a lug that is drilled and tapped. The bottom surface is the concern in this instance. There seems to be two popular methods of creating a pillar from the lug bottom to surface of the rear bedding pads of the trigger housing.
1. The area between these two surfaces can be bedded solid using an asssortment of products. Done in a manner that produces a solid material mass from top to bottom. A hole is drilled and a screw is used to torque the two surfaces together..
2. The area between the two surfaces is occupied in part by a metal pillar, surrounded on all sides by bedding material in a manner that leaves the top and bottom of the metal pillar in direct contact with the heel and TH bedding pads. There is no bedding material between the pillar and the surfaces of the heel and pads. If there is bedding material between the two surfaces why install a the metal pillar?
Number two is a true pillar bedding method.. This method is an accuracy advantage in my opinion... What is your's?
Art
Is pillar bedding an advantage?
These two questions always bring about different answers and opinions, leaving the subject subjective...
The advantage of pillar bedding and how to best achieve it has been discussed at lenght. My argument, or position, concerns the mateial/materials used to form the pillar.
As an example: Speaking of the receiver heel that has a lug that is drilled and tapped. The bottom surface is the concern in this instance. There seems to be two popular methods of creating a pillar from the lug bottom to surface of the rear bedding pads of the trigger housing.
1. The area between these two surfaces can be bedded solid using an asssortment of products. Done in a manner that produces a solid material mass from top to bottom. A hole is drilled and a screw is used to torque the two surfaces together..
2. The area between the two surfaces is occupied in part by a metal pillar, surrounded on all sides by bedding material in a manner that leaves the top and bottom of the metal pillar in direct contact with the heel and TH bedding pads. There is no bedding material between the pillar and the surfaces of the heel and pads. If there is bedding material between the two surfaces why install a the metal pillar?
Number two is a true pillar bedding method.. This method is an accuracy advantage in my opinion... What is your's?
Art
21 - 23 of 23 Posts
check your old M1A,,
The one with 5,000 rds fired...ArtI agree, bedding material between the two metal parts is better than metal to metal, IMHO. Besides what Neergaard mentioned about the surface roughness, I think unless the pillar and the lug are surface ground flat before assembly there is no telling how the two mates.
This thread got me thinking about a couple McMillan stocks I picked up recently. They are supposed to be Navy / Crane takeoff stocks from match rifles. I still need to run the last 4 of the serial numbers to verify if they are navy, but I can see the drawing number in the glass and they do appear to have been on real M14s. Anyway after reading this thread I wanted to look and see how they were bedded. The rear pillar looks very similar to Docs photos above. Of note the rear pillar does not touch the lug and has a significant gap between top of pillar and surface of the bedding. There is also a skim coat between trigger group and bottom of pillar. Front pillar looks to be made from same material as the rear and also looks to have a gap between the top of pillar and bottom of lug. No skim coat to cover front pillar.
Does anyone know who put the lugs on navy rifles? I don't think crane would have done this but I could be wrong. I would like to eventually build one of these stocks. With them I also got trigger group, bolt and barrels.
Does anyone know who put the lugs on navy rifles? I don't think crane would have done this but I could be wrong. I would like to eventually build one of these stocks. With them I also got trigger group, bolt and barrels.
21 - 23 of 23 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
M14 Forum
A forum community dedicated to M14 and M1A Rifle owners and enthusiasts. Come join the discussion about optics, ammunition, gunsmithing, styles, reviews, accessories, Modern, Devine, SOCOM, EBR, classifieds, and more!
Full Forum Listing
Explore Our Forums
Recommended Communities
