I honestly don't notice a difference in accuracy after cleaning in my Tikka, it's always the same clean, dirty, hot or cold barrel. It's a stainless steel, heavy barrel so maybe that has something to do with it... IDK for sure.
I've heard people say that the "fouling shot" which is the first after cleaning seals all the imperfections in the barrel lands and grooves which improves accuracy.
I have trouble believing that anything in the barrel other than the distinct lack of rifling or a MAJOR crack, pit or high spot could really affect accuracy. As long as the bullet starts spiraling out of the barrel the accuracy should be there and the gun has done its part. Think about it, that bullet is being pushed by something in the neighbourhood of 40 000 psi of pressure on average if not more. A little blob of powder is really going to do something to a bullet going 3000 fps?
IMO, cleaning is more about maintenance and ensuring your firearm lasts. I do feel that buildup of grime in the barrel and action creates more wear, FASTER which LEADS to increased inaccuracy, however. I'm a mechanic by trade, and that makes sense to me. Changing the oil in your engine every 5000 kms or 3 months doesn't affect the power or performance significantly, BUT by doing that simple maintenance you prolong the life of the engine by reducing the number of wear particles in the engine itself.
Once your barrel is broken in, that's as accurate as it's ever going to be, your job is to keep it from wearing in more as long as possible.
So to make a long answer short... go ahead and clean as often as you want, because you're not doing any harm by cleaning MORE often (other than maybe stripping screws when you don't use the proper sized screwdrivers to take the rifle apart!!)
