Actually very satisfied!
I bought this for a 243 Win which I probably scraped up by using a bronze brush pulled back though the muzzle, but more on that later. I did heed the other comment that stated it scored his lands, so I took extra precaution and only used the weight of the tool with the slightest downward pressure do the job. I did not touch the T handle, only rotated the barrel between my thumb and index finger. And I must compliment the prior reviewer for helping me understand the cutting power of this tool. So please, do not use it as you would a screw driver!!! And please, minimum rotations are recommended since one can always go back again after assessing the outcome at the range. To finish I twisted 0000 steel wool and coated with J-B polish and lightly rotated that against the chamfer, and under a scope, I would say I have an approximately 95% machinist finish. And after 50 rounds, I must say I am most satisfied, for my usage. And by the way, this was done on a premium rifle. Which brings me to my earlier point. There seems to be a pitched discussion of bronze vs nylon bore brushes. Very technical discussions at that and I've learned so much. Principally, I learned from experience that for small bores, I would recommend nylon since being that the brush twist core is quite close to the smaller caliber bore diameter, it does not give much distance for bronze bristles to bend. Hence if you bring the brush back from muzzle to chamber, it requires a fair bit of deflection and pressure against the crown surface. Yes, I know, there is a school of thought that recommends against this, but if you must, I recommend nylon! As a final thought, I believe that nylon is more than sufficient since the chemical solution are excellent today and you do not need the physical pressure of a bronze bore brush to remove carbon and copper. Thanks all for reading....
