cma3366a
Crown wear is/can be an issue and I believe you should have some concern about it.
I personally use a separate "range rod" for range shooting and for cleaning. I use two other devices that helps protcet the crown. One is a spin jag, a jag that rotates but also has a teflon washer at the top of the jag that keeps the jag from running into the crown. I also install a crown protector on the rod.
One thing that you have going for you is the QLA on the end of your barrel - it helps protect the crown on the riflings.
Spin Jag:
http://www.spinjag.com/
Crown Protector:
http://www.trackofthewolf.com/(S(rl0ihy55xhbiixuwq4wap5io))/categories/tableList.aspx?catID=6&subID=49&styleID=15 9
)/imgPart/rod-guide_1.jpg)
Range Rod: I use a Tipton Carbon fiber rod, in fact I have a couple of them - they are very good rods... but still more crown are damaged by dirty rods than the type of rods....
http://www.battenfeldtechnologies.com/654574.html
Just some examples....
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