My Remmy 700 will pick up an a$$-load o' copper after only 3 to 5 rounds. Then again, it really settles-in to its tightest groups at around 12 to 15 rounds. Rough bore or not, it shoots better than I can, so I'm not overly concerned about it.

I've never used the product you mention, but I've had tremendous luck with the Gunslick foam. It may take three to four 2-hour soakings, but there's no scrubbing involved at all. All in all, it's far less work than when I've used the Shooter's Choice ammonia.

I'm sure there are many folks with more rifles & far more experience than myself, so check out the replies, & make up your own mind.

Good Luck,

FC