In Canada, we have two restrictions on barrel length. If the barrel length is altered, it can't be shortened to less than 18 1/2 inches. A barrel can be shorter than this if the rifle is of original manufacture, and meets a certain over-all firearm length. I'm not at home, so I can't check to see what that is right now (its probably in metric anyhow).
Like DLuke, I'm a still hunter at heart, and (of necessity) mount optics on my rifles. Since I don't like scopes, I use red dots, and am more than happy with them. Since these have infinite eye relief they can be mounted forward. I find the newer short/fat ones to be excellent for this. Contrary to things I've posted over the years, a few years ago I managed to shoot a standing deer at 213 yds with a 5 minute red dot, so even though they shine at short rangtes, they gan be used out there a little ways.
I used to hunt with a remington 742 with a 22 inch barrel, and would get about 2600 fps out of factory ammo advertised at 2700 (30-06/180's). I developed a handload for deer that i liked using ballistic tips that produced 2470 fps. When I bought my 760 carbine I graphed these same loads at 2471 fps. I've since developed a moose load for this gun that gives me 2636 fps that my brother-in-law has used to down two moose cleanly.