Rem 700 Raceway pin gauge sizes.?

[hoz53]

Can someone remind me what size pin gauges I need to cover rem 700 raceways? I did a search here but didn’t get any results. Thanks

 

[jkohler]

.702 .7025 .703 .7035 .704 .7045 .705. Having two of each is nice if you can swing it.

 

[Dusty Stevens]

Since theyre usually different sizes front and rear i use the bushings from mansons kit to find the sizes

 

[Alex Wheeler]

A full length mandrel is the best way to find center of an imperfect hole. The bushing setup will only find center between those two points. I struggled with the Manson and PTG setups until I finally had 12" ground and hardened rods made up in .0005" increments by JGS. The largest that passes through the bore without forcing it will find true center of the warped and tapered bore. And you will get excellent lug contact after truing without the bolt biasing to one side.

 

[hoz53]

A full length mandrel is the best way to find center of an imperfect hole. The bushing setup will only find center between those two points. I struggled with the Manson and PTG setups until I finally had 12" ground and hardened rods made up in .0005" increments by JGS. The largest that passes through the bore without forcing it will find true center of the warped and tapered bore. And you will get excellent lug contact after truing without the bolt biasing to one side.

Thanks for the explanation Alex—- I was planning on making my own Mandrals by measuring the sizes I need with the pin gauges. Even if I have a shop do them for me I need a way to measure and decide what sizes to order.

 

[hoz53]

.702 .7025 .703 .7035 .704 .7045 .705. Having two of each is nice if you can swing it.

Thanks Kohler — that looks like what I need.

 

[hoz53]

Since theyre usually different sizes front and rear i use the bushings from mansons kit to find the sizes

Thanks Dusty I’ll look in the catalog and see what they have.

 

[Alex Wheeler]

Thanks for the explanation Alex—- I was planning on making my own Mandrals by measuring the sizes I need with the pin gauges. Even if I have a shop do them for me I need a way to measure and decide what sizes to order.

I'll check tomorrow on what sizes I have and give you a range. I also have them for Bats at .720 +/-. They were not cheap but they are excellent.

 

[Dusty Stevens]

Get with your local machine shop and get some drill rods centerless ground. A member on here did some for me. I think theyre 12 or 14” long. You could get a good machine shop to do them in .0001 increments if you really wanted to get fancy

 

[Dusty Stevens]

Mine are .7005 to .7055 in .0005 inc. for remingtons. That even covers the reamed raceways

 

[hoz53]

I'll check tomorrow on what sizes I have and give you a range. I also have them for Bats at .720 +/-. They were not cheap but they are excellent.

Thanks

 

[hoz53]

Mine are .7005 to .7055 in .0005 inc. for remingtons. That even covers the reamed raceways

Ok I’ll look around. That’s quite a range Thanks

 

[Dusty Stevens]

Ok I’ll look around. That’s quite a range Thanks

You could get by with .001 increments. I didnt know when i got them

 

[hoz53]

You could get by with .001 increments. I didnt know when i got them

Ok- I wasn’t quite thinking right. That’s only 5 thou range. Thanks

 

[Alex Wheeler]

.701-.703 .0005 increments. I used to sell the set. JGS made them for me and my spec was.0002 for taper and diameter. My .7015 and .702 are the most used.

 

[hoz53]

.701-.703 .0005 increments. I used to sell the set. JGS made them for me and my spec was.0002 for taper and diameter. My .7015 and .702 are the most used.

Thanks much Alex- that’s great info— I thought I remembered you advertising them.

 

[tobnpr]

You could get by with .001 increments. I didnt know when i got them

Ditto. I don't care about half-thou in a boltway, to each their own

I buy all my pin gauges from Meyer.

 

[hoz53]

A full length mandrel is the best way to find center of an imperfect hole. The bushing setup will only find center between those two points. I struggled with the Manson and PTG setups until I finally had 12" ground and hardened rods made up in .0005" increments by JGS. The largest that passes through the bore without forcing it will find true center of the warped and tapered bore. And you will get excellent lug contact after truing without the bolt biasing to one side.

Ok I read this again a few times cause I was actually thinking of making a mandral with different diameters at each end if the ends were different. You are telling me though that a single diameter mandral will be best though right? It just seems to me that depending how the mandral is attached to the action the large action diameter would flop around a little (for lack of a better way to put it). Of coarse I know it helps we are
indicating/ machining from the end. And the flop would only be a few thou so this must not matter much. Just a thought as I sure dont have the experience you do at this stuff. Thanks Much

 

[hoz53]

Ditto. I don't care about half-thou in a boltway, to each their own

I buy all my pin gauges from Meyer.

how do i contact them

 

[Alex Wheeler]

Typically each end of a 700 will have a slightly different bore diameter. many times running 703 in the front. But remember I said my 7015 was my most used? These actions are all warped, a lot of customs are too by the way. That warpage is why you dont run into a loose side, the mandrel is bound up from the warp and you need a smaller mandrel to slide through the whole bore. On the chance you ever get a loose one, use a .001 shim under the rod in the front or use the action screw to lightly touch the mandrel. The wear on the front end of the action is on the bottom where the feed ramp leaves a sliver of bore left. Thats also why I dont ream them, tool push off up front means that most all of the cut will happen on the feed ramp, even with the guide bushing. If I wanted to get crazy on a 700 Id lap it but I already do enough work that does not pay LOL.