Rem 700 min. camming distance

R

Rhys

Guest
Was truing up a 700 SA today, and have run into a bit of an issue. There wasn't much camming distance to begin with, but by the time everything was squared up it only has about .008" that the bolt is forced back by the camming surface at the bolt handle. I've done dozens of 700's but have never run into one that gave this little camming. I already know I'm going to have to fix this before proceding any further, but how much camming distance should I be trying to achieve?

I currently have 2 options. I have a spare bolt that may match up better, but will need to open the bolt face and put in a different extractor. Or second option is to take the existing bolt remove the handle, and move it forward to increase camming.
 
The more camming the better. I like to have at least .060" and preferably a little more. I'd suggest removing the bolt handle and reinstalling it where it needs to be. I've seen actons off of the cheaper grade synthetic stocked 700's that it didn't seem that they took very great care to get the bolt handle in the correct position when they came from the factory. Then when you true the action and take a thousanth or two off the locking lugs on the bolt and receiver, they didn't have much camming.
 
Mike,

Thanks for the quick reply.


I was figuring .050-.060 or better. This action is one of the worst I've had my hands on in a while. The lugs on the bolt were really bad. Had to take .010 off of the one before the other even started to cut, and I was making cuts at intervals of .002. After the 3rd pass and only cutting on one lug I shut everything down and rechecked my setup to make sure I didn't have something haywire, and nope it was just that far off.
 
I like to have the handle mounted such that it almost touchs the front of the bolt handle slot when closed. That guarantees maximum extraction effort.
I've made tooling that allows me to measure the front of slot to lug abutment distance and other tooling that allows me to accurately locate bolt handles. Not suggesting that you do this, I just like to make tooling.

Jay, Idaho
 
How do you set up to measure the amount of camming? Pics would be great if anyone has them! Thanks for helping out a green horn!!!:D
 
huntinco said:
How do you set up to measure the amount of camming? Pics would be great if anyone has them! Thanks for helping out a green horn!!!:D
Click to expand...

You can measure the depth from the receiver face to the bolt face with the bolt closed and then again with the bolt opened and held tight against the top of the extraction cam. You can also measure it with the depth rod on a dial or digital caliper measuring from the rear of the tang to the rear of the stripped bolt in both closed and open positions.
 
Al,

I watched through that series last evening and really like the design of the fixture he's using to hold everything in place. I had to go meet the ammo truck today, and I stopped in at the metal shop that is just down the road from where I me the truck. I picked up the stock needed to build a similar jig. That's a lot better setup than the one I've got currently.

The further I've gotten into the action the more I've found that the reason it felt tight before was because all the warps went in such a way that they were just shy of binding it up. Oh, well this one averages out a bunch of those that went so smooth. It's just one of those where the guy would have been ahead to sell the existing rifle and have me do the build from a custom action, but initialy the action looked pretty good.
 
Bolt Handle LOCATION(fwd/aft) Measurement-

1.Measure front receiver ring to rear receiver bridge at base of bolt handle cut.
2.Measure front receiver ring to lug abuttments.

Subtract measurement #2 from measurement #1=
Bolt Handle LOCATION dimension + .006" to .008 " clearance.
 
Dans40X said:
Bolt Handle LOCATION(fwd/aft) Measurement-

1.Measure front receiver ring to rear receiver bridge at base of bolt handle cut.
2.Measure front receiver ring to lug abuttments.

Subtract measurement #2 from measurement #1=
Bolt Handle LOCATION dimension + .006" to .008 " clearance.
Click to expand...

i'm still new at gunsmith stuff..and i have been known to weld/braze/silver solder...but i have read enough on these boards, that if i need a handle installed its going to dan in alaska!

sometime i do actually listen

mike in co
 
You must log in or register to reply here.
Back
Top