Yea but, I already shoot 200's out of my 300.
I have a 220 Swift and know about light 22 caliber bullets.
I just don't see the .223 as the best platform for the heavy 77 to 90 grain .223 bullets with high SD's out there, because it is velocity challenged.
I would be interested in the 22-6mm or 5.56X57 because the gun I want to use is a 7X57 now.
With a good Swift and a 7 x 57 you're in pretty good company. Even the Swift can't burn all the powder the case will hold without a blinding flash and a roar enough to scare a critter to death. Chrome helps out there a bit, but a 22/06 is like necking the 50 BMG down to shoot sewing machine needles. Neat ideas but worthless after a couple hundred.
Wayne
