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Rifles, Reloading, Optics, Equipment
Gunsmithing
Pillar/skim bedding question
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<blockquote data-quote="Bart B" data-source="post: 609019" data-attributes="member: 5302"><p>Wel, all the epoxy bedding materials I know of expand when hot and contract when cold. Which means it doesn't make any difference if there's a round metal bushing around the stock screws and epoxy of some thickness around the rest of the receiver or no pillars at all. When it's cold, the only hard, bedding points are at the pillars; they don't shrink as much as epoxy. The rest of the receiver's not held as tight on its bottom nor any place else. With conventional epoxy bedding, there's more receiver bottom to bedding contact when it's cold; expecially around the stock screws.</p><p></p><p>Having shot the same two or three rifles in all sorts of temperatures and humidities from the 20's up to almost 100, they all held the same accuracy level with the same load. No pillar bedding. Just plain old full contact epoxy except for the bottom of the recoil lug which is clear of any epoxy.</p><p></p><p>Of course one should retorque their stock screws before each shooting situation. ths assures the same compression force at the stock screw areas regardless of the type of bedding.</p><p></p><p>The most accurate shoulder fired rifles I know of are all conventionally epoxy bedded. No pillars at all.</p><p></p><p>And don't forget; the receiver expands when hot and contracts when cold; just like pillars.</p></blockquote><p></p>
[QUOTE="Bart B, post: 609019, member: 5302"] Wel, all the epoxy bedding materials I know of expand when hot and contract when cold. Which means it doesn't make any difference if there's a round metal bushing around the stock screws and epoxy of some thickness around the rest of the receiver or no pillars at all. When it's cold, the only hard, bedding points are at the pillars; they don't shrink as much as epoxy. The rest of the receiver's not held as tight on its bottom nor any place else. With conventional epoxy bedding, there's more receiver bottom to bedding contact when it's cold; expecially around the stock screws. Having shot the same two or three rifles in all sorts of temperatures and humidities from the 20's up to almost 100, they all held the same accuracy level with the same load. No pillar bedding. Just plain old full contact epoxy except for the bottom of the recoil lug which is clear of any epoxy. Of course one should retorque their stock screws before each shooting situation. ths assures the same compression force at the stock screw areas regardless of the type of bedding. The most accurate shoulder fired rifles I know of are all conventionally epoxy bedded. No pillars at all. And don't forget; the receiver expands when hot and contracts when cold; just like pillars. [/QUOTE]
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Pillar/skim bedding question
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