so let me get this strait, you have a tikka varmint in 7 mag??? as far as I know you can't get one of those, maybe its a canada thing but I would put a $100 bill on not being able to get one in the US.
the tikka is a system that fills a niche, its not the prettiest gun out there, its a gun that is mass produced to a level of accuracy that honestly a well known extremely competent gun smith would have trouble matching. I have 2 customs built on rem 700's krieger barrels and both have contours not less than a #5. one has a mcmillian stock the other an HS both are glass bedded to the action, both guns were built by a gunsmith that has built world record setting guns, guess what, my little tikka t3 lite 30-06 is less finicky and if a random load was picked, it would walk all over these 2 guns. last time I shot it on paper, I shot 4 different bullets with 3 different powders in to .5 aggregate groups, dude that is getting it done in the accuracy department!!!!!! that is with random book loads that I just picked out of the book no ladder testing on all of them, I have also shot a couple .25 ragged holes with the thing, all this was done on only 2 range trips, far from playing with the gun and lets keep in mind this gun is less than 6.5#'s!!!!!
the tikka is designed to be an out of the box shooter, it does not need glass bedding or a gunsmith to fix it or even do a trigger job, try buying a ruger for instance, it will need a good smith to tune the trigger or replace it, IMO it also needs to have the pressure point on the barrel removed and maybe some glass bedding, this is at least an additional $100 in gunsmithing. same thing with a remington 700, the tikka free floats the barrel about 4-5 inches away from the action, the action fits into the stock very very tightly and consistent, the bolt on mine is as smooth as it can get, as for the loading port, yea its small but that loading port is one of the secrets to the accuracy the gun has, that solid bridge across the top of the action adds a ton of stiffness, this means accuracy, look at some high end bench rest actions, many of those have small ports, because it adds stiffness.
go pick up a CZ it uses no plastic parts however there is a high likely hood that the barrel to stock gap will not be the same on both sides of the barrel, again something that has to be fixed. the tikka needs nothing, except maybe a sims limbsaver added, it also comes with an accuracy guarantee, if you don't like it sell it, its probably better for you that way as if you do go shoot it, it will make you mad at your other rifles. for a guy that has spent boat loads on customs especially don't go buy one.
BTW my t3 varmting 204 also shoot .5 with hornady 32 AND 40 vmax facotry loads.