Dawg,
Thanks for your impressions. I know everybody's recoil perception is different. My standard hunting load is a 420gr WFNGC at a chronoed 1,278fps using a hefty dose of H-110 (I wouldn't go higher) out of my .475. It i more comfortable to shoot than my .454 with 300s at 1,500 +. I also ran some 330WFNGCs out of the 475 using Lil'Gun. I didn't chrono the 330s, but guess they're running real close to 1,500 fps -- it also was more comfortable than the 300s out of the .454. In the .475, The 420s at 1,278 are more comfortable than the 330s at approx 1,500fps.
My .454 is a FA83 and has a 6" unported barrel -- the .475 is also a FA 6 incher, but the barrel is magnaported. It has been a while since I've worked with the .454. I have to change the priming system on my 550B for the .454. I've been shooting the .475 so much that I just haven't gotten around to it.
I bought the .475 in August on Gunsamerica, and now have 4,100 rounds thru it. Most of those are 400 grainers right at 1,100 fps. I really like the .475 with the ported barrel. Like you, I wouldn't have ordered it that way, but wouldn't hesitate buy another one with ports.
Paul