Don't know where to ask this question but here goes. I have a 700 SA 6BRX that I am looking to maybe use a new bolt for. The barerel is machined for a standard 700 bolt but I am thinking of using a cone bolt. How involved is this? Can I just set up and machine the correct angle or is this a complete rechamber job?
Cone bolt barrell machining
- Thread starter welldone
- Start date
I would not cone (machine) a 3 rings of steel Remington factory bolt. If you want a cone bolt start from scratch with a new replacement bolt. You have a couple of extractor options. The only aftermarket bolt maker I know of is PT&G. There are several custom clone makers who offer cone faced bolts i.e. Kelblys, Pierce, Bordon come to mind.
Nat Lambeth
Nat Lambeth
I've done this several times myself and I cut off about 3/8 to start then I coned the breech set the shoulder back and then rechambered. Came out great.
What benefit are you hoping to achieve with a coned bolt? I ask this because I have 3 custom actions with Remington-style bolt-face and a fourth (single-shot) with a coned bolt. If I had to do it again, all my actions would have remington bolt faces. All my remingtons have been trouble-free. The coned bolt / M16-extractor does not extract/eject as well. This may be a manufacturer problem, but the point is the Remington system is well-proven and trouble-free...and the safest choice. Why fix what is not broken???
PS. Coned bolts are only appropriate for single-shot actions.
PS. Coned bolts are only appropriate for single-shot actions.
I don't know about the Springfield as I've not seen one in years but the control round feed model 70 is coned. I've got a tubb 2000 on order at the moment and of what I've read its got a coned bolt face. They must feed pretty well since the across the course guys seem to love them. All of my target rifles are coned, I can't find any fault with them.
A lot of guys that used to shoot NRA XTC matches with a bolt gun would use a cone bolt face because it facilitates smoother feeding of the round into the chamber from the magazine.
My BAT 3Ls & Nesika K have coned breechs, but are all single shots, while the Pierce actions in two Eliseo repeater tubeguns are configured like stock M700s with a bolt nose recess. While logic dictates the Pierces should feed smoother if they had a coned breech, they're really slick as-is (one's a 6BR in a R5; the 2nd is a 6.5x47 in a RTS) and feed without a hitch.
Guess there's enough demand for the coned bolts to make it worth Dave's time to set up for & make them, but I've not seen any reason to go that route with actions that were originally set up with a bolt nose recess.
Guess there's enough demand for the coned bolts to make it worth Dave's time to set up for & make them, but I've not seen any reason to go that route with actions that were originally set up with a bolt nose recess.
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