yes my 6mmrem (trueflite um) takes a few when real clean I found the best accuracy was if I done nothing but bore snaked a couple of times and oil and only clean proper copper etcetc once every 100 or so rnds in fact that's now what I do with all my centerfire barrels 22 rimfire barrels should only be cleaned once every 12 months under heavy use (I used to shoot atleast 200 rounds a week when I was competitive target shooting they shoot better fouled so if its clean I used shoot at least 20 rounds before shooting a match not a biggie with a hunting gun we are talking mm's difference
but like anything its finding out what works for you and your firearms you may find a clean barrel shoots best or the other way round and I know of guys that have rifles that like to be cleaned hard even in the rim fire circles
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