Nothing is perfect.The attachment at the end of the barrel is ugly and you do have to take the time to dial in the cr attachment.As an example I shoot 130 grain Barnes X's out of my .270,several years ago I spent probably three hours dialing that bullet in.I havn't moved the settings since and I continue to use that same bullet.Fortunately 130 grain corelokt's shoot virtually identically as the Barnes X's,so if I want to practice I am doing it at $12 a box versus $27 a box.
What has been mentioned here about the durability of the attachment concerns me.I always check mine to make sure it is snug and hasn't moved and I have never had a problem with it.My sense is with the attachment after the purchase you are a trigger job or replacement away from all the additional expense that that gun is likely going to need in terms of accuracy improvement.If I hand loaded it would be a different story.I have a Remington LSS mountain rifle in 30-06 that I have over $500 in accurizing gunsmithing inthat shoots great but not near as accurate as the Browning with not nearly as much money invested in the gun.
I purchased a tikka t-3 appx. two years ago in .243,I was influenced by all the gun writers who thought so highly of it.I went to the range with 5 boxes of different ammunition.One cheap box to get it close and 4 boxes of premium ammunition at $18 to $22 a box to see which load it liked.Trigger at 3.5 lbs great gun rest where my influence was minimal.This was a rifle that was "guaranteed "to shoot 1 inch groups out of the box.In fairness to tika I may have gottten a lemon.The best group I could get out of the gun was 1.5 inches with Scirrocco's.An inch and a half isn't awful but for a .243 it is not acceptable,I sold the gun.
For me the Boss/Cr alternative is a good one, beyond the original cost of the gun and a trigger job you should be able to achieve excellant accuracy without any additional expense!
I don't have many guns but what I have I want to perform.For most of the hard core people out there my stable is a small one (Mossberg 835 for Turkey's,T/C ENCORE .50 Caliber Muzzleloader,Browning A-Bolt .270,Remington Lss mountain rifle in 30-06,and a Remington 541 .22)I don't think there is anything I will ever hunt that one of the above wont take care of.
A Kimber .270 WSM has been calling out my name for some time now though!!!