But what is a clean cold bore? Clean clean or cleaned then fouled in 10-15 shots I thought I have heard of some ERT teams leaving thier .338's in this ready condition. I could be wrong but just thought I would throw that out there of course this may not be very practical for every one.
CCB is completely stripped of copper. Bare Metal.
DCB is leaving it fouled with a few shots down the pipe. This is the preferred way to leave a tactical rifle that might need to shoot someone. Less variation in shots. CCB is a very real thing. It doesn't show itself much at shorter ranges but what does a cm at 100 turn into at a grand? Every sniper in the CAF should know where that first shot goes compared to the following shots. We've been taught it since day one.
I don't see a sniper team carrying a few pump pillows around with them, I highly doubt too many hunters will be carrying pump pillows with them either.
They are using them in competitions. SOF snipers at the USASOC Competition at Fort Bragg:
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A small backpack, a bag, a rolled up jacked can all be used in the same way as the pillows. And these were what was used in matches before the pillows came around. They are a fairly new thing.