After a while, the fouling from the last shot will dry and become crunchy. Loading through that will cause a change in barrel condition and thus likely not as accurate as
if loaded right away after the last shot. Most target shooters, ie: chunk and plank wipe their bores out between shots. There is at least 5 minutes and
or 15 minutes between shots in these events, thus to maintain an even bore condition, they clean between shots. Some guys think it improves their accuracy.
if comparing to loading a crunchy bore, that is quite likely. If loading immediately after shooting, I do not believe the cleaning helps anything - at least that is what
my testing showed.
I tried cleaning between shots in a couple of my rifles over the years & oding accuracy tests comparing the two methods. I did not achieve any better accuracy
than if I shot "dirty", without cleaning. Thus, for me, it seemed a lot of work for no benefit.
I find loading what for me in a dirty bore, is no more difficult that loading a clean one - they load virtually incidentally, unless I am shooting a small bore
like my old .32 or newer .36 with Mink Oil. These load easier after the first shot & for the next 50 or so shots, than the first shot did. This might be due to residual WD40
in the bore and not liking the mink oil. After the first shot, which strikes centre, btw, loading is easier for the next whack of shots. No starter is needed for this little bore using
a .350" ball and .022" patch in the .360" bore. Virtually pure lead tiny balls forms easily into the muzzle with just a bit of pressure from a choked up rod.
Mike - I take it you saw the patch material laying on the race. For cutting patches with an arch punch, it needs to be sharp. If you go to a plastics shop and buy a piece of 2" thick UHMW or HDPE
about 8 or 10" square for a cutting block, you will be much happier with the arch punch. I have been using just such a piece of Poly for a number of years - cut thousands of patches on it. Still
working fine. 5/8" sounds OK for a .32. I was using 7/8" arch punch and they work fine in .32 and now .36. It punches them out at .850" or there abouts. My .32 was re-barreled into a .36 and
those patches still work fine. They are just a tich bigger than a nickle.