Originally Posted by hiwall
actually I am totally correct in my statement above. cutting the barrel square and de-burring is where the accuracy is achieved. the crown is only for looks and and to protect that true cut on the muzzle. if you do not run the muzzle into rocks or other hard surfaces there is no need to crown.
Technically you may be correct. What you say will work but you have to be able to make absolutely sure that the muzzle is square and doing that by hand isn't easily done. Facing the muzzle off in the lathe is the very best way top get rid of burrs too. Almost anything you use to deburr the bore will scratch the inside of the muzzle and that ruins accuracy. Doing in on the lathe however you can start the cut with the tool cutting towards the outside of the barrel and when you're done there is virtually no burr, provided the tool is sharp and set at or just below center. Attaining accuracy is usually paying attention to details here and there on the entire rifle and a proper crown is one of the basic buildning blocks for a rifle that shoots as good as it can.