Not just no, but hell no. I bought a 7mm Rem Mag Encore with dreams of having a single shot long range gun, and all I did was spend lots of money. With the money I have tied into that thing I could have just bought a Sendero. With the smaller calibers 223-7mm08 they seem to be OK, but thats it. There are alot of aftermarket things you can do to take the wobble out of the hinge pin and float the barrell, but it dosn't gain anything. Also most of the barrels I believe are made to shoot the more popular light weight ammo, not the heavy B.C. stuff we like. My 7mm Rem Mag would about beat you to death at the bench with an aftermarket recoil pad, I wouldn't want to feel a 300RUM. And to answere your question I have heard of it chambered in 300 RUM, but its a custom barrel. I even saw one in a 30-378. The best way I have seen to make an accurate by our standards T/C is to have a custom barrel made in 7mm 08 or 280 AI, use the oversized hinge pin, free float it, pillar bedding, and get the custom reloading dies made specifically for your rifle. Then MAYBE it will shoot good (to 3 or 4 hundred meters). I fell to the TV stardom of the Encore but don't you do it. Don't get me wrong, if your mission is to shoot a deer at 100 yards once a year then its an awesome rifle, but you won't need a 300 RUM for that.
