Well.... I have shot neither.... but Ihave heard and read lot's of raving about the accuracy of the Tikka and precious little about the Browning A-Bolt or X-Bolt.....
They are both factory rifles. In their clalss of factory rilfe, you have the Vanguard, Sub MOA Vanguard, Howa, Remington SPS or XCR and Savage rifles that have good reps for accuracy. You just dont hear a lot about the X-Bolt. I wonder why?
-MR
Hmmm this reply smells of internet idealism.... The mines the best and Im gonna tell everyone.
If you dont own and never have shot either than why would you even come to this post and say anything??
It does not help with his question and really only serves to waste bandwidth..
For me, I might throw a guess that most that own them do not get online and "brag" about what they have.
I however do have remingtons, sub moa vanguard, brownings, a tikka, and have thrown howa's away..
To answer the first question IMHO the tikka and the x-bolt are very close to each other out of the box. The new browning trigger is every bit as nice as the tikka in my expierence. The original a-bolt stock trigger sucked (to heavy) but easily fixed with after market springs. Both are very accurate out of the box. Both my 223 brownings and tikka shoot sub moa at 100 yds. Both browning and tikka seem to be going after the light rifle market.
I give the edge to the browning on parts but really its tit for tat. They are both hard to find parts for. Both are also hard to find smiths to work on. If you are going to try and shoot above 500yds frequently I would suggest looking at a different rifle. If your looking for a very nice packable rifle to shoot up to 500 I would say either one would be a very nice and very capable weapon.
Tikka, and the x-bolt have a detachable mag and some prefer that over the browning hinge plate design on the a-bolt. I like the way the tikka feeds but the x's new rotary mag is very smooth.
If berretta would have brought the tikka super varminter over in the 243 I would have bought one in an instant. Instead I have chose to get the x-bolt varmint in 243. I cant wait to put it to the test.
I am also getting a rem 700 custom built in 6mm rem with a lilja barrel so I cant wait to see how the factory rifle stands up. Just remember your buying a over the counter stock rifle not a semi custom or full custom. Use it for what its designed for and I promise you wont be disapointed in either.
Good Luck!