Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
Squared and Trued 700 VS Blueprinted
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="J E Custom" data-source="post: 1612076" data-attributes="member: 2736"><p>With out starting a big argument, I guess I never though of to separate procedures for Blue printing an action. The way I was taught was that the reason for blue printing in the first place was to machine all surfaces of the action and bolt and threads to be on the bore center line. tolerances of the bolt fit to the action should be parallel and within .002</p><p>to .003 thousandths reaming is not necessary unless these tolerances are more. the factory action bolt bore is +or - .700. the bolt is normally .698 to .699 (.001 to .002 thousandth Smaller for correct operation)</p><p></p><p>When/if action reaming is necessary the same tolerances are necessary.</p><p>A good smith will/should determine if reaming the action is necessary to prevent excessive and unnecessary cost.</p><p></p><p>I feel that getting all surfaces square and concentric to the bore is the most important for accuracy and enlarging the action bore and bolt does nothing for the accuracy that would not be done with normal blue printing. It only makes the work more expensive if it was not necessary. </p><p></p><p>A "proper" blue printing should cost no more than $ 300.00 and will be well under the cost of a custom action and the precision will be as good or better in some instances.</p><p></p><p>So In my opinion, Blue printing is blue printing the cost is determined by the amount of work that needs to be done and unnecessary work only drives the cost up. I agree that if the cost gets above $400.00 dollars, it may be prudent to look for a better donor action or a custom action. </p><p></p><p>Beware of cheep blue printing because most of the time only a few operations are done that give it the appearance of being a complete and "True" blue print when in reality it is minimal. (I have re barreled many actions that the owner said that he had it blue printed, when in fact it ether had been lapped or nothing had been done at all) Most blue printing processes cant be seen with the action assembled, so you have to depend on your smith to do it right and complete. Showing the owner in person or with pictures is necessary before any more work is always a good idea. This also includes and shoddy work that exist.</p><p></p><p>Each Smith may have his own method of setting up and blue printing but the finished product the most important.</p><p></p><p>Just My Opinion</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1612076, member: 2736"] With out starting a big argument, I guess I never though of to separate procedures for Blue printing an action. The way I was taught was that the reason for blue printing in the first place was to machine all surfaces of the action and bolt and threads to be on the bore center line. tolerances of the bolt fit to the action should be parallel and within .002 to .003 thousandths reaming is not necessary unless these tolerances are more. the factory action bolt bore is +or - .700. the bolt is normally .698 to .699 (.001 to .002 thousandth Smaller for correct operation) When/if action reaming is necessary the same tolerances are necessary. A good smith will/should determine if reaming the action is necessary to prevent excessive and unnecessary cost. I feel that getting all surfaces square and concentric to the bore is the most important for accuracy and enlarging the action bore and bolt does nothing for the accuracy that would not be done with normal blue printing. It only makes the work more expensive if it was not necessary. A "proper" blue printing should cost no more than $ 300.00 and will be well under the cost of a custom action and the precision will be as good or better in some instances. So In my opinion, Blue printing is blue printing the cost is determined by the amount of work that needs to be done and unnecessary work only drives the cost up. I agree that if the cost gets above $400.00 dollars, it may be prudent to look for a better donor action or a custom action. Beware of cheep blue printing because most of the time only a few operations are done that give it the appearance of being a complete and "True" blue print when in reality it is minimal. (I have re barreled many actions that the owner said that he had it blue printed, when in fact it ether had been lapped or nothing had been done at all) Most blue printing processes cant be seen with the action assembled, so you have to depend on your smith to do it right and complete. Showing the owner in person or with pictures is necessary before any more work is always a good idea. This also includes and shoddy work that exist. Each Smith may have his own method of setting up and blue printing but the finished product the most important. Just My Opinion J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
Squared and Trued 700 VS Blueprinted
Top