memtb
Well-Known Member
There is a lot of internet chatter around saying to get bear groups for monos you need to have a clean bore without any guilding metal left behind. So a rifle kind of becomes a copper only for bet accuracy. TBD for me but this is what the you tubers are saying. I wonder if barrel break in is different for a mono vs copper over lead?
This JMO.
Pertaining to the clean bore……I don't think that it's as critical as it once was with the original X Bullet. They were notorious for fouling, especially with a less than perfect bore. On rifles fouling and shooting terribly……a thorough "hand-lapping" of the bore would help a great deal.
They also appeared to dislike following typical "cup and core" bullets without a thorough cleaning! I know that my wife's rifle is very sensitive to going from cup and core to Barnes……even after lapping her barrel.
Also again, my opinion……I don't think that break-in will be any different.
All of that said, I only have experience with around 6 different rifles, since the '90's.
I hand lapped her barrel prior to ever trying the Barnes bullets, and my rifle had a "match grade" barrel which never showed any signs of fouling.
Once I developed a load for my wife's rifle (.338 WM) in '93 with the and used it until '13, when we went with the TTSX. ….we stayed with that load.
In my rifle (.375 AI) I started with original X Bullet in '92. I've progressed through the TSX, the TTSX, and as of last summer the LRX.
Needed or not, I will still clean the bores on either before going to the Barnes, if we shoot any cup and cores! memtb
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