02-14-2014, 02:30 PM
woohoo Wrote:I don't need to recheck it, I've known what it looks like for 5-6 years.With all the respect owed to a well-known and respected gunsmith, this comment suggests that one may have lost the desire to learn new things.
Based on looking at and reading the drawings, I concur with your observation:
Quote:IF any part of the throat is .264 or larger there will be NO lands. The groove in the barrel is .264. If the reamer removes material .264 or larger it will remove all of the lands making a smooth bore...freebore.
Quote:Your numbers are wrong, the area where the lands slope a .5 degrees starts at .2644 and they get taller to .2617. Notice the .2644", that is larger than .264 and will remove all of the lands.
I was truly hard-pressed as to why you could say my numbers are wrong when yours agree with my memory and those on the drawing -- until I re-read my post and realized I had misstyped! BTW, tapering out from .2644 to .2677 and then starting a 1.5 degree slope down to bore diameter would create an interesting picture! Many thanks for calling my attention to the error. I have just corrected the typographical error.
I am still hard pressed to find a feature in the drawing that would evoke the appearance of a ring "just before where the lands start" as described in post #17.
I will concede that the observer may have confused the neck-freebore transition with where the lands start, which would explain the differences and why we don't seem to be on the same page in this discussion.