Don't know if this is of any help, but the most accurate rifles I own - all have the barrel pinned to the stock, regardless if they are full or half stock, with the breech plug and tang as one unit screwed into the barrel. I never remove these barrels from the stock for cleaning. There's no need to IMHO unless you drop your rifle into a puddle of water, or you get caught in a down pour where it would be neccessary to thoroughly clean the rifle. (I'll also add that these are the rifles I built that fit me the way I like - they are not factory made, so this also has a lot to do with their/my accuracy).
The rifles I own (factory built) that the barrel is held by one or more wedge keys, and a hooked breech do not seem to keep/hold their accuracy once the barrel is removed for cleaning. They always seem to need (as Dan mentioned above - a few rounds to resettle them back to the stock).
Simple solution,,, don't remove the barrel for cleaning.
This is just what I've found through the years to be the case. Hope it helps.
