think smart about dry balling a muzzy, and be prepared. we all will dry ball eventually. and if we shoot a lot, sometimes we do this dry balling over and over again, particularly as we advance in years and decline in smarts - guilty as charged am i.
if yer in the field and do a dry ball, you will be smart if ... a) you have a Good ball screw worm, and b) you have practiced using said device. there is no pressing need for breech plug removal tools if you've practiced ball retrieval with a rod and ball worm. with any ball diameter, use as small a thread ball screw as possible - the large diameter and coarser thread kind will make ball retrieval harder to impossible as their size will over compress the ball lead into the barrel, acting as a wedge. some folks have taken to making a rod with a 3/32" or so drill bit at one end, to pre-drill a hole that will greatly lessen a ball screw worm's ability to compress the ball lead into the bbl.
there are two kinds of breech plug removal tools - make-shift and proper. mine are all of the proper kind, they will not mar the steel, and i've removed/replaced many Many dozens of breech plugs over the decades, of all types and sizes. again, if yer prepared to use a ball screw worm, and done yer homework, it will work just fine for the most part. i will add, for the guys that are loading *TIGHT* patched balls, you will have a Far greater chance for requiring breech plug removal.