A bit excessive I think. Did you check for copper buildup and clean it out as needed? For breakin I use a different method to smooth out a barrel. I have done it on every new barrel I have ever had. Even on muzzlelaoding barrels which I have used by the dozens building flintlocks for 45 yrs. Even though they rarely need it. I have never had a problem with a barrel using this method.
I put a tuft of 4 aught steel wool on a jag, oil it and run it full length of the barrel and back about a dozen times. On a cartridge barrel if I detect copper to any extent after that it gets another dozen swipes. I have never had to do it more than twice and have never detected any decrease in the potential accuracy of any barrel that I had done to it. For instance, my .35 Whelen and 7x57's after getting this treatment shot 3 shot cloverleafs, first 3 out of the barrel. 100 yds with a Weaver K-6. If you dont like my method, don't use it but I will continue to do that with the 2 Trade Gun Smoothbores I am currently making. 62 caliber. Flintlocks forever.
El Lobo
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