coyotezapper
Well-Known Member
There is nothing wrong with bronze but bronze will give you a false positive with copper solvents and with some powder solvents. Not an issue with BT nylon brushes shown above or with Iosso Eliminator brushes.
Thanks. I was curious if the bronze could be over aggressive. I have been using bronze for years and wondered if I could be causing damage. I will give nylon a try!There is nothing wrong with bronze but bronze will give you a false positive with copper solvents and with some powder solvents. Not an issue with BT nylon brushes shown above or with Iosso Eliminator brushes.
Tubbs Final Finish if they make it in that chambering. If not a neconos kit should work - same process.I'm building an AR in 350 Legend specifically for plinking and hunting predators, using cast bullets. I chose 350 Legend, because of the AR calibers, it seems like a very good choice for cast bullet use.
I just slugged the new barrel. It was hammer the slug (tight), then push by hand, then hammer again, then push by hand, then hammer yet again, and then the slug fell out. (It's a relatively cheap "AR Stoner" barrel from Midway) So, several tight and loose spots in the barrel.
Sounds like I better hand lap the barrel, right??
Vettepilot
I use bronze brushes as a first step with a carbon cleaner. I happen to mostly use C4 but Kroil works well. I make sure there are no copper cleaning agents in contact with the bronze brush as it will shorten the life. I make a 20-25 stroke pass and patch it out with copper remover. I have done this for 20 or more barrels in the past 5 years and the barrels will hold the original precision until the usual life span. Do make sure you use a good bore guide and a rod with a freely rotating bearing handle. Most of my fellow competitors clean with bronze brushes.Lots of good methods reading this
I have a question.
Pros and cons of bronze brush vs nylon brush?
Not only barrel break in but afterwards as well?
It's ok to go back and forth with a nylon brush if you do not go 100 percent out the crown otherwise you should push through and remove the jag or brass brush before pulling the rod back through. Don't want to wear or damage the crown. Last thing the Bullets touch on the way out!Back and forth