Tenon OD 700 remington

[boiler_house7]

Have question on determining tenon OD on barrel after single pointing and truing threads on 700 remingtons. What would be some methods of determining how much bigger the tenon OD would need to be. I know it depends on how much it takes to clean up the threads, just wanting to see methods used to determine what the OD needs to be after the action is oversize on cleaning up threads. Thanks Bill

 

[Dusty Stevens]

You can email me on this bill. Pretty simple but hard to explain

 

[Dusty Stevens]

You can email me on this bill. Pretty simple but hard to explain

Email sent. You da man bill

 

[boiler_house7]

Thanks a lot dusty. Bill

 

[X Ring Accuracy]

Glad you got some info. For those not privy to it. A rule of thumb on recutting action threads on a Rem 700 is 1.075. If you cut your tennon's major diameter 1.075 on a trued action you are right where you need to be. When you cut your threads a few cursory checks once you have reached .035 travel on your compound will start telling you what needs to be done when shooting in the dark. If by chance the previous smith cut it to say 1.085, a quick inside (minor) dimension of the action threads will give you an idea of major diameter. The above is shade tree machining, best bet is to get a thread mic.

 

[boiler_house7]

Thanks for the reply sir, You hit the nail on the head pretty close to what i came out with on tenon. as you mentioned without a internal thread mic for the minor kinda shooting in the dark. Does a feller know where you can get one without breaking the ole bank. Bill

 

[sdean]

Shop around on Ebay

 

[Zebra13]

Gents,

This is how I did it last time I trued and action:

After my last pass on the threads I take the threading tool, and leaving it at the same depth as my last thread pass, use it to remove the first thread and a half of the action threads. I then measure this area to get the ID. As this ID is the same as the major diameter of my action threads, I subtract .005 from this measurement to get my tenon diameter.

Just a nother' way to skin that cat.

Justin

 

[Dusty Stevens]

Sorry i forgot about this hidden thread! To figure turn to dimensions you take .99/tpi and in the case of a tenon going into an action you add that to the major dia of the threads. So .061 is the number on a remington- measure the inside dia over the threads and add .061 to that and thatll give you the number to turn your tenon to to start threading. .0495 is for a 20tpi like savage, and .055 is good for 18tpi. This works on anything such as muzzle devices, threaded rod- anything youre externally or internally threading. It took me quite a while to get a universal formula that gives @85% engagement on any tpi i want to turn. The engineer in me kicked in one day while going crosseyed looking at a machinerys handbook doing a tuner with an extremely fine thread. Had to solve that problem once and for all. Many ways to skin a cat but writing my simple formula on the wall and those measurements will save you many pencils and brainpower.

 

[boiler_house7]

The note on my wall. and verified with a stub threaded up @ a 1.074 tenon OD as dusty described on measurements. Turned out very nice with just a light touch on crest of stub threads. Thanks Dusty. Oh if a feeler tries to save a buck on the pocket machinist hand book you better not wear cheaters, you may develop some of that there severe headaches. Ha Ha, get the big boy book. Dusty saved me a few aspirin. Bill

 

[Dusty Stevens]

I got many ways bill. Some are crazy, some are easy, but all have gotten me thru those long days making chips.