Re: Cheap Remmy 700 sps barrels
I don't think you give up much accuracy-wise with a factory Remington barrel. My Sendero shoots mostly around .5 MOA once I worked up loads. Heck, I even got a Savage package gun shooting .5-.6 MOA consistently (I cheated, this was after adding a Rifle Basix trigger and dropping unbedded into an HS Precision stock).
Bedding is an easy improvement on any gun (and cheap, DIY).
The only disadvantage I have found, and have heard is common, is that I have to clean my 300WM Sendero VERY frequently. I get about 20 rounds before accuracy rapidly degrades. I clean out the carbon and copper and .5 MOA is acheived again. I'm told the barrels are a lot more porous than custom hand lapped barrels, which this gun will get when the factory tube is fried.
I'd buy the gun now with a factory barrel, then when you burn it out your game will be up and you will be able to do the custom barrel justice (and have the action trued while you have the barrel off).