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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Action truing/blueprinting
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<blockquote data-quote="airborneike" data-source="post: 908249" data-attributes="member: 32751"><p>In my experience not all Rem 700 actions are in need of blueprinting. In the production process, tooling wear and Monday morning causes some 700 actions to be less than good. This shows up mostly as uneven lug fit and non concentric end cut on the action. Threads are not usually a problem as long as they are loose enough to allow the barrel shoulder to mate squarely to the action end.Bolt faces can be off but not a huge amount generally speaking.</p><p></p><p>There is no easy way that I know of to tell if the action is in need of truing short of taking the existing barrel off. If you have a 700 that no mater how many loads you try, you just can't seem to get good groups with then there may be problems.</p><p></p><p>These problem actions can and will show very good gains in accuracy with blueprinting. The age old question of "is blueprinting worth it" can only be answered by what the individual wants out of the action. If you are building a bench rest competition rifle then everything you can do to make even minor improvements are helpful. If you are satisfied with 1 MOA hunting accuracy then blueprinting is probably not worth it because most 700 actions will achieve that level.</p><p></p><p>What I have seen is most newer 700's are really very well made and you won't see a big increase in accuracy with blueprinting. An exception that I worked on was a sendero 25-06 that the owner could not get to shoot no mater how hard he tried so I bought it for a reasonable price as a donor action and found the bolt lugs were not only very uneven but the action lugs were cut on a bevel angle. Don't know how that action passed quality control but when I trued it up it shot very good. Go figure!</p><p></p><p>All the best</p><p></p><p>Mike</p></blockquote><p></p>
[QUOTE="airborneike, post: 908249, member: 32751"] In my experience not all Rem 700 actions are in need of blueprinting. In the production process, tooling wear and Monday morning causes some 700 actions to be less than good. This shows up mostly as uneven lug fit and non concentric end cut on the action. Threads are not usually a problem as long as they are loose enough to allow the barrel shoulder to mate squarely to the action end.Bolt faces can be off but not a huge amount generally speaking. There is no easy way that I know of to tell if the action is in need of truing short of taking the existing barrel off. If you have a 700 that no mater how many loads you try, you just can't seem to get good groups with then there may be problems. These problem actions can and will show very good gains in accuracy with blueprinting. The age old question of "is blueprinting worth it" can only be answered by what the individual wants out of the action. If you are building a bench rest competition rifle then everything you can do to make even minor improvements are helpful. If you are satisfied with 1 MOA hunting accuracy then blueprinting is probably not worth it because most 700 actions will achieve that level. What I have seen is most newer 700's are really very well made and you won't see a big increase in accuracy with blueprinting. An exception that I worked on was a sendero 25-06 that the owner could not get to shoot no mater how hard he tried so I bought it for a reasonable price as a donor action and found the bolt lugs were not only very uneven but the action lugs were cut on a bevel angle. Don't know how that action passed quality control but when I trued it up it shot very good. Go figure! All the best Mike [/QUOTE]
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