Both do what they are made for. What is your end use?
It would be better to ask Remington that question.
It's rated around 280 FPS. This is average for this rifle.
Dont believe Browning chambered a rifle for the 6mm Remington cartridge. Do you mean 6.35mm (a pistol)?
6mm .12 gram or 6mm .20 gram BB's are recommended.
Unknown.
Usually a custom job these days.
It depends on the particular model of the rifle, not the caliber it is in. What model and make is it?
No- but Google does: http://www.retting.com/g/belgflobertrifle.jpg
Depending on condition, $150-$200.
Probably 1.0-1.5 MOA, depending on WHICH Ruger rifle.
Yes. I own the rifle myself, buy .36g BBs, or else the power of the rifle will send the BB flying in the wrong direction.
Do some internet searching. Try e-gunparts.com