Tooling for Vanguards? It's the exact same I use for Remingtons. Action truing is done by single point cutting critical surfaces. Cutters don't care what brand it is and most current lathes cut metric threads at the flip of a switch...
I true my rifles with a Manson Accurizing kit, and just purchased a PTG Gen 2 reamer kit - perhaps it isn't as perfect as a lathe, but then again, I am not building benchrest rifles - I build real-world rifles that are going to be shot in F-class or tactical matches, or in the field, and I have yet to build one that was left wanting in the accuracy dept.
I agree that a $7000+ quality lathe is the most precise option, but in my opinion, there are too many other variables involved in determining the rifle's potential that whatever tiny miniscule gain in accuracy I may get from a lathe setup isn't worth the cost, setup time, and risk compared with how true I can get an action with my "lathe-less" blueprinting tools.
I have found that a good action that has a square face/lug/barrel shoulder, square lug faces, lapped lugs with 100% contact, precise chamber, and match bore - the rifle is going to be more accurate than 99% of the shooters behind it...
Perhaps if I start building benchrest rifles (or rifles that resemble a 20 lb. pressure barrel mounted in a stock needing a bipod that looks like something off a star wars set) that need to be capable of .10 MOA, I'll invest in a larger lathe that I would trust cutting on an action with.
My comment about facing the rear of the integral lug - I was referring to a Howa 1500 that I worked on several years ago in .300 Win mounted in a B&C stock that kept having trouble with floating zeroes, long story short was tracked down to the integral lug being slightly canted, causing off-center pressure on the action under recoil. Since it was butted up against an alloy bedding block, glass bedding wasn't my first choice as a fix. I simply measure and re-faced the lug with an end mill, problem solved.
Every smith' has their own thoughts and practices on performing certain jobs, or working on certain rifles, I simply stated mine concerning said rifle.