Re: Barrel fouling .204
Fouled bores aren't always a bad thing either.
A couple of my rifles are more accurate dirty than they are clean. My H&R 24" .223Rem is one of them. It will tighten up after about 3-5 shots, and remain tight grouped until about 25-30 shots, then it starts to open up again.
Target and varmint shooters will keep a cleaning rod with them in the field to do a quick run-through of the bore when needed. Since they aren't stalking game the can have some of the necessities with them.
As Tomcat described above, a new rifle with have a relatively rough bore until broken in. Certain sequences of firing and cleaning will help clear up the bore. Until that bore is honed in the "rough" machine marks will hold more residue, which will reflect on your patches. Once the bore is broken in you will often find a cleaner bore when cleaning.
I personally polish my bores before hand manually, staying clear of the throat and chamber. I allow the firing to clear up the throat. It's not recommended unless you absolutely know what you're doing. I've been doing it for as long as I can remember, and haven't had a problem.
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