Another unique feature of the between the war Churchill XXVs, is the Churchill tapered rib. When you shoulder one of these beautiful guns, the tapered rib gives the illusion of longer barrels.
Nonetheless, I find the short barrels a little too easy to stop given the fact that most everything else I shoot is 30 or 32". I have been able to ameliorate that somewhat by using a weighted leather barrel guard.
Due to short barrels being out of fashion these guns, both boxlocks and sidelocks, sell at a significant discount given the quality of the workmanship.