Gunsmithing Win 70 question

[18Echo]

Being that the model 70 winchester is flat on the bottom, has a different bolt design, and has an integral recoil lug, as opposed to the Rem 700, how is the action truing accomplished? Are there some steps done to the Rem 700 that aren't done to the win 70 due to design (I notice most descriptions don't include recutting threads)? I notice that usually the win 70 truing is cheaper also.

Also, on Gre-tan's website, he states on the win 70 truing that he "Open Win. action tenon to 1.062 x 16 tpi" What is this for and what benefit does it have?

 

[DMann]

Re: Win 70 question

No differences. Opening up to 1.062/16TPI basically duplicates the Rem 700 dimensions and allows the chasing of the threads to insure concentricity with the bolt raceway. Since most smiths work on 700's, they are used to cutting barrels to Rem dimensions and this little bit of standardization just makes things simpler. If the owner ever needs to do a quick rebarrel, he could do so with a pre-fit M700 barrel. The only significant differences in the operations come with a "classic" M70 action with an external extractor and the mortise that has to be cut in the barrel tenon to accommodate same.

 

[bignada]

Re: Win 70 question

I think if you are taking your gear to a "gunsmith" who can't cut a 1x16tpi barrel thread for your Win 70, you are dealing with a hack.

Winchester 70 is way superior to any Remington design, except maybe the new Mauser action they are marketing.

If you want a precision win 70 look to the oal chamber dimension and be sure yours is .0005 to .001 at max over go-gauge dimension. Ascertain that dimension and go shooting. Very unlikely you will need any of this "action truing" BS.

 

[AJ300MAG]

Re: Win 70 question

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Also, on Gre-tan's website, he states on the win 70 truing that he "Open Win. action tenon to 1.062 x 16 tpi" What is this for and what benefit does it have?</div></div>

Pull the barrel of a Winchester and you'll see that when they broach the lug raceways it removes the threads in the areas of the raceways. Cutting the threads to 1.062" gives you 100% threads. You need good cardide tooling to do the job, the threads are harder than those in a Remington action. Question is does it really help...

 

[Natep]

Re: Win 70 question

Truing the action on my FN SPR action alo included squaring the face of the reciever where the barrel shoulder mates to it and lapping the bolt lugs.

 

[STR]

Re: Win 70 question

Action truing means something different to alot of folks. Some think that by sticking a threaded mandrel on the action and facing the action square, then simply lapping the bolt lugs to the reciever that they have trued the action. Then when the shooter gets his gun back and it doesn't do any better than before, he is upset and believes that action truing is bull. If action trueing done right was bull, then every remington and winchester that came from the factory would shoot under 1/2 inch MOA, but we all know that is bull. So just make sure you give your work to someone who can't afford to make you unhappy. Good luck

 

[BlackOps Tech]

Re: Win 70 question

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: STR</div><div class="ubbcode-body">Action truing means something different to alot of folks. Some think that by sticking a threaded mandrel on the action and facing the action square, then simply lapping the bolt lugs to the reciever that they have trued the action. Then when the shooter gets his gun back and it doesn't do any better than before, he is upset and believes that action truing is bull. If action trueing done right was bull, then every remington and winchester that came from the factory would shoot under 1/2 inch MOA, but we all know that is bull. So just make sure you give your work to someone who can't afford to make you unhappy. Good luck </div></div>

+1.

 

[wnroscoe]

Re: Win 70 question

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: STR</div><div class="ubbcode-body">Action truing means something different to alot of folks. Some think that by sticking a threaded mandrel on the action and facing the action square, then simply lapping the bolt lugs to the reciever that they have trued the action. Then when the shooter gets his gun back and it doesn't do any better than before, he is upset and believes that action truing is bull. If action trueing done right was bull, then every remington and winchester that came from the factory would shoot under 1/2 inch MOA, but we all know that is bull. So just make sure you give your work to someone who can't afford to make you unhappy. Good luck </div></div>

+2

 

[Natep]

Re: Win 70 question

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: STR</div><div class="ubbcode-body">Action truing means something different to alot of folks. Some think that by sticking a threaded mandrel on the action and facing the action square, then simply lapping the bolt lugs to the reciever that they have trued the action. Then when the shooter gets his gun back and it doesn't do any better than before, he is upset and believes that action truing is bull. If action trueing done right was bull, then every remington and winchester that came from the factory would shoot under 1/2 inch MOA, but we all know that is bull. So just make sure you give your work to someone who can't afford to make you unhappy. Good luck </div></div>

If squaring the reciever face and lapping the bolt dont make a difference then why are these things done virtually every time a new action is worked over? So then the question still remains, what is action trueing?

 

[Clark]

Re: Win 70 question

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bignada</div><div class="ubbcode-body">I think if you are taking your gear to a "gunsmith" who can't cut a 1x16tpi barrel thread for your Win 70, you are dealing with a hack.

Winchester 70 is way superior to any Remington design, except maybe the new Mauser action they are marketing.

If you want a precision win 70 look to the oal chamber dimension and be sure yours is .0005 to .001 at max over go-gauge dimension. Ascertain that dimension and go shooting. Very unlikely you will need any of this "action truing" BS. </div></div>

Not only right on, but spoken like a real man with balls!