Not trying to be cynical, butI wouldn't trust many "absolute statements" like that thaton the Internet...IMO those kinds of questions need to be put to engineers in the business.

What I live by is the industry rule of thumb when using 3F...which I personally askedTC about for verification.....and thatis to reduce 2F load data by 15% so the 3F chargeoperates in the same pressure range as the 2F charge would have.

ie: if you normally use 100grns 2F, then use 85grns 3F and pressures are in the same ballpark.
Gets meall the benefits of faster ignition and low fouling without any negatives of higher then normal pressure.

I suppose large volumes of large3F powder charges could begin a form of "throat erosion" it the area where the ball is seated...gas cutting the lands enough where blowby could begin around the patched ball, affecting accuracy...no idea how many shots that would take though...I'd certainly guess thousands...and in that light,I can't imagine anyone intentionally using that many of high power3F charges...the recoil itself wasnoticeably violent on the experiments I ran using full size charges of 3F in place of 2F.

My barrels getapowder-puff diet of mild 50-60grn target loads of 3Fon the weekends...then an occasionaldeer hunting shot each fall using a 90grn charge of 3F...19% belowthe max2F chargefor a given caliber.