Here's the crown on my .40 match barrel. It allows using a .400" ball with a .022" denim patch, although the barrel shoots just as well with a .019" denim patch - both with windshield washer fluid or LHV or spit for lube. I also use a .397" ball with a .0215" denim patch as measured from my mould and by my mic. The bore of this rifle is .398".
Here's the crown on my .69 (14 bore) rifle. I have used several ball diameters in this one as well - a 16 bore ball, ie: .662" with 2, .018" denim patches, both with WW and with pure lead. The loading is quite easy and the patches, both from each shot, are reusable. Accuracy seems to fall off comparred to the larger balls, past about 90 yards, although the patches maintain their integrity with any loads. I've also used WW and pure lead 15 bore balls, of .675" diameter with .030" denim patches with excellent results and the patches are again, reusable after being fired. the larger, almost 14 bore ball of .684" diameter is the most accurate. I'm using a stripped denim Taylor gave me, measuring .020" on my calipers, which loads easily in this crown. The WW balls measure .002" larger than the numbers given, BTW, which is one reason they load tighter. The other reason is the hardness of the alloy prevents easy impression of the lands upon loading. As you can see in this picture,s the emery just barely started in the bottom of the grooves. This crown makes for easy loading. The .40's crown is a bit deeper and is even easier to load. The .400's and a .019" patch goes down almost with finger pressure, once seated even with the muzzle. I use a short starter with both, however it is not needed with the .40's crown.
Lets see your crowns and tell us what your loads you are using. How about, no posts & descriptions without a picture?
Both these crowns were first cut with an angled tool seated in a drill press, then ground and polished with emery and my thumb.(I've stopped using my pocket knife for the initial cutting - but it works).
