OP,
Here is my current setup. I say current because it has changed a few times over the years.
Here is the latest full photo. KRG Bravo with spigot mount and adjustable buttpad. An Atlas bipod. Seekins rings. S&B scope. Sterk bolt handle. IBI barrel. Base?? can't remember. Anarchy Outdoors extended mag release. Extra mag and holders relocated to another rifle. Rail underneath the forearm is for a flashlight.
Below are changes after the above photo was taken.
Timney 2 stage trigger converted to single stage with current trigger pull weight. Very consistent and predictable. Safety does not function with this trigger set up.
Aluminum bolt shroud. Bolt handle was already there.
Wiebad cheek pad.
The IBI barrel I have was one of the first T1x barrels IBI offered with the Win 52D chamber. To my understanding they no long offer that chamber and instead use the Eley EPS chamber on all their 22LR barrels designed for a bolt action.
The Winchester 52D chamber is very tight "not diameter wise but length wise" and IBI received complaints that the chamber was too tight and the bolt was too hard to operate. "Keep in mind the 52D chamber was designed for a single shot, not a repeater."
The first photo below is where the round stops when dropped into the chamber. The remaining amount of brass/case is equal to the amount of bullet engaging the rifling. This may not be desirable for NRL unless you have the perfect wire ejector profile "which I believe I do". Some of you may not know but the wire ejector has a direct impact on feeding also. My 'this" T1x is now controlled round feeding. That is when the round leaves the magazine the rim slips up and between the extractor and bolt face for a straight shot into the chamber. I don't know why Tikka won't make this bend from the factory. I guess they really don't have to with the factory barrel.
Typical accuracy I get at 55 yards.
OP,
If you buy a current IBI barrel either from IBI themselves or Brownells or DVOR or someplace else, it will more than likely come with the Eley EPS barrel. This is a good thing and probably best for your application. I would highly recommend IBI. I also use one on a 457 that has the Eley EPS chamber. Accuracy is not as good as this 52D chamber but it is more ammo friendly as far as function goes.