Check out Alberta Tactial Rifle in calgary. There doesn't seem to be alot of gunsmiths that specialize in long range rifles in canada, lots that do general hunting rifles though. If you are concerned with long range accuracy it seems to me that ayou need to find that in a good gunsmith as well. Or with the proper permits and the right gunsmith you should be able to get work done in the US.
I will put in a plug Savage rifles. With the budget you gave, you could get one of their target actions, have it timed and tuned by Sharp Shooter Supply, put on the barrel and stock of your choice for less than $1500.
I just finished my second Savage project. The first is a bone stock LRPV in 22-250 with an Elite 4200 6-24x scope. This gun averages in the .2's and .3's. On a good day it will go into the low .2's.The best group is a .15 for 5 shots. The whole set up cost about $1600.
The second that I just finished today started as an LRPV in .223. I took off the factory barrel, screwed on a PacNor 28" prefit in 300WSM, changed the bolt head, set the head space and it was good to go. The whole process took less than 20min. I put a Leupold Mark 2 in a set of Burris signature rings on there and it was good to go. I'm just working on breaking in the barrel, but none of the 3 shot groups went over .5". This is without any load development. Just a go to load with H4831SC and a 150gr Rem CL bullet.
I think that you could build an accurate rifle just as easily on a Savage action as any other. For that matter you could probably buy one that shot pretty darn good out of the box. I will say that the after market parts are a little harder to find for the Savage when compared to a Remington or similar action.
Well, that stevens sure seems good, but I know for a fact its a little off at about 1000Yds.
So.... After much thought, I've put aside the LR rifle for a little while. First reason, a custom build in Canada will in most cases not cost under 2K$, might as well buy a factory rifle and tweak it a bit. Second, I'm not willing to pay more that 1500$ for a 223, that is why I will wait, save up some extra cash and when the time is right, maybe invest in a custom 270 or 308.
With all that in mind, I bought myself a Tikka T3 Varmint Stainless (.223) with a leupold Mark II 3-9x 40mm T2 Mil Dot, all for just over 1500$Cdn. Looking forward to putting some rounds down range.