RE: Sako Hunter 75 Question
Try Montana Extreme 50BMG or Wipeout. 50BMG is a real aggressive ammonia based copper cleaner. Wipeout is less aggressive and is designed to be left in the barrel overnight. Both work really well.
50BMG is very strong and I guarantee you don't won't to put your nose over an openbottle of it and take a whiff. Use it in a well ventilated area. Also, in case you decide to try some, I have found that the best way to apply it is with a boremop with a steel core. Using it with a brass jag or brass cored nylonbrush will give you false indications of copper (since brass is a copper alloy). After applying it with the bore mop and waiting 10 or 15 minutes, push a patch throughon the end ofa separate clean bore mopto see if you have any blue color. If you do, you've still got copper in the barrel.
Wipeout is easier to use, though it can be a bit messy since it's a foam. I use a Sinclair bore guide in the chamber (it has an "O" ring which seals the chamber, keeping solvent out of the action and stock)and squirt it into the muzzle until it comes out of the bore guide. I place something under the rear of the bore guide to catch it as it oozes outso it won't get on the stock. Then I place the gun, muzzle slightly down,in a gun cradle and patch it out after about 8 to 10 hours. May take two or three applications on your gun, so you're talking a couple of days.
Anyway, those are the two that I use. There are several others on the market also, some good, some not so good.
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