O
oneflyer
Guest
I have heard this question- has the action been trued or blueprinted. What's the difference?
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Dave Tooley
Active member
none in my mind
I guess the word "blueprint" might be taken as a set of dimensions but the riflesmith will verify any dimensions that are provided on a "trued" action before starting any work.
Dave
I guess the word "blueprint" might be taken as a set of dimensions but the riflesmith will verify any dimensions that are provided on a "trued" action before starting any work.
Dave
J
Jkob
Guest
I have heard this question- has the action been trued or blueprinted. What's the difference?
And...you will get a different answer from different "smiths".
D
Dennis Sorensen
Guest
For instance I think the term is misused when it concerns factory actions.
You can not blue print something unless you have blue prints to follow. In which case you machine everything to a definite blueprint specification.
Truing an action for increased accuracy is more appropriate. The basics would include truing the action face and the recoil lug recesses and the action threads with the bolt race and truing the bolt lugs and bolt face with the bolt body. That is basic truing in my opinion and works very well for hunting/varmint/precision rifles without a great expense.
This can be taken farther by various steps to decrease the bolt body to bolt race tolerances. Some will ream the action and install larger diameter bolts or bush or "bump" the bolt.
The firing pin can also be reduced and the firing pin hole reduced by bushing. This allows higher pressure to be used and also reduces firing pin slop if the bushing is done deep.
Unless you are building a short range competitive rifle some view this work as not very cost effective. A custom Benchrest action is a better value.
You can not blue print something unless you have blue prints to follow. In which case you machine everything to a definite blueprint specification.
Truing an action for increased accuracy is more appropriate. The basics would include truing the action face and the recoil lug recesses and the action threads with the bolt race and truing the bolt lugs and bolt face with the bolt body. That is basic truing in my opinion and works very well for hunting/varmint/precision rifles without a great expense.
This can be taken farther by various steps to decrease the bolt body to bolt race tolerances. Some will ream the action and install larger diameter bolts or bush or "bump" the bolt.
The firing pin can also be reduced and the firing pin hole reduced by bushing. This allows higher pressure to be used and also reduces firing pin slop if the bushing is done deep.
Unless you are building a short range competitive rifle some view this work as not very cost effective. A custom Benchrest action is a better value.
O
oneflyer
Guest
So it's.........
perhaps terminology. The process may be the same for both?
perhaps terminology. The process may be the same for both?
D
Dennis Sorensen
Guest
perhaps terminology. The process may be the same for both?
It may be but there is no standard..
It's just all words being bantered about...
One mans truing might simply be lapping the lugs... to me blueprinting is meaningless.
If you plan on paying for it, have the details as to what is or will be done.
.
M
Mike Swartz
Guest
I agree with Dennis. If the receiver were indeed made to the "blueprint" there would be no need to "true"it Alas, in a lot of cases they are not to print. Then they need to be trued which will more than likely make them out of print. I like trued as a terminology better. That could get to be a tail chase. And we haven't even spoken of "timed" yet which is sometimes ignored in the "truing" process.
Mike Swartz
Mike Swartz
Term Bluepringing..
The term blue printing carries over from the industrial revolution, and then to until WWII production of military vehicles.
The US government required its contractors to work within established standards. The most economical means was from drawings. These drawings were reproduced on Diezit blue printing duplicators. The Europeans and Asians used metal templates and gauges instead of blue print drawings.
Because the tollerances were slightly varriable the fit and finish of vendors products were somewhat generic. The term "blue printing" was carried over to the automobile industry post WWII and then high performance engine builders. The meaning was the specs were kept to much tighter tollerances. The same idealogy applies to custom built rifles vs factory manufactured rifles.
Rustystud
The term blue printing carries over from the industrial revolution, and then to until WWII production of military vehicles.
The US government required its contractors to work within established standards. The most economical means was from drawings. These drawings were reproduced on Diezit blue printing duplicators. The Europeans and Asians used metal templates and gauges instead of blue print drawings.
Because the tollerances were slightly varriable the fit and finish of vendors products were somewhat generic. The term "blue printing" was carried over to the automobile industry post WWII and then high performance engine builders. The meaning was the specs were kept to much tighter tollerances. The same idealogy applies to custom built rifles vs factory manufactured rifles.
Rustystud
O
oneflyer
Guest
Thanks
I had an action for sale. It had been "trued" by a very reputable gunsmith. He had performed the tasks as described. Lapping lugs, facing the bolt face etc. A potential buyer had asked if it had been trued or blueprinted and I did not know how to respond. This is a Remington action. I will tell him it was trued and that will have to suffice. Thanks for the responses.
I had an action for sale. It had been "trued" by a very reputable gunsmith. He had performed the tasks as described. Lapping lugs, facing the bolt face etc. A potential buyer had asked if it had been trued or blueprinted and I did not know how to respond. This is a Remington action. I will tell him it was trued and that will have to suffice. Thanks for the responses.
D
Dennis Sorensen
Guest
I had an action for sale. It had been "trued" by a very reputable gunsmith. He had performed the tasks as described. Lapping lugs, facing the bolt face etc. A potential buyer had asked if it had been trued or blueprinted and I did not know how to respond. This is a Remington action. I will tell him it was trued and that will have to suffice. Thanks for the responses.
Hopefully more was done than lapping lugs and facing the bolt face... Etc. doesn't really cover it... Why not give him the name of the smith and let him inquire as to the procedure that was done...?