Re: bolt upgrades for Remington 7oo s action
seeing as how there is not a "standard" for a tactical bolt, other than a knob. the door is open.
For the money, your best bet is to buy a PTG bolt with threaded handle already and sell yours. You can order it fluted, with sako or M16 extractor and be way ahead money wise over reworking a stock 700 bolt.