I measured my EGW rail for LA Vanguard. It matches the Rem700 LA measurements I found on the net perfectly. Starting from the rear, the hole spacing is as follows:
hole 1- hole 2: .600"
(3-4: .860" )
All my sources claim the "base to ring center" height for Rem700 to be shorter than on Vanguard / Mk V , and the gap can easily be bedded with epoxy, just tightening the front screw(s) and leaving the back floating. In fact it should always be done anyway IMO, I've bedded my Talleys and there's a considerable difference in shape versus factory new. When removed and reinstalled, the reticle ends up exactly where it was on the collimator grid, even when I just drop the scope into the (also lapped) rings.
I used release agent everywhere except the bottom of the Talleys. Add black dye, trim excess after 5-6 hours of drying, and they're pretty much perfect -- if it wasn't for the lack of taper.
I'm now contemplating ditching the Talleys for a Nightforce Rem700 Direct Mount ( 20 MOA ) as it should fit my Vanguard. There's just one thing I'd like someone with a Remington 700 to measure: The distance from the rearmost of the two front mounting holes, to the ejection port. The Direct Mount has a recoil lug there and I'm only worried it won't fit Vanguard:
If there's a gap on the Vanguard, I can bed it, but if I have to grind the lug away, I'll ruin any resale value in case it doesn't work out. So I'd appreciate if someone would check the measurement for me.
Hope this helps MkV owners as well.