No amount of lapping can make a BCA similar to a better barrel in terms of machining quality.
Not my video
[video=youtube_share;VaMfplsgZiY]https://youtu.be/VaMfplsgZiY[/video]
You can't hand work gouges out of a precise bore, they would have to be filled first, which is basically impossible.
I am not saying that a BCA cannot shoot well. I have seen a mosin with a rotted bore from corrosive ammo shoot quite well. It is just much less likely that it will be very accurate and consistent.
There are definitely some great shooting BCAs out there.
Not my video
[video=youtube_share;VaMfplsgZiY]https://youtu.be/VaMfplsgZiY[/video]
You can't hand work gouges out of a precise bore, they would have to be filled first, which is basically impossible.
I am not saying that a BCA cannot shoot well. I have seen a mosin with a rotted bore from corrosive ammo shoot quite well. It is just much less likely that it will be very accurate and consistent.
There are definitely some great shooting BCAs out there.