Re: 300 mag complete!
Yes it can be done. My cousin has a 338 Lapua Mag built on a Savage target action. You can order the bolt head. Yes I said the target action. To eject a loaded round you have to take the bolt out, but it will eject an empty casing. So far it cuts single holes. So for something that can't be done, it works pretty good so far. I think other companies are spreading this blasphemy to try and keep Savage out of the running. There are edges built on the Savage action.
As far as difference between the Edge and the Lapua, about 100 to 150 fps with the 300grn. SMK. We are expecting about 2800 to 2950 out of the Lapua in a 32" barrel it is built on.
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it.  But small is the gate and narrow the road that leads to life, and only a few find it.
If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger
Friends don't let friends develop canonitis!
arguing over the internet is like the special Olympics....even if you win, you are still...special!