I thought I would post this since we are talking about shooting corrosive ammo. I made up this little cleaner that works like a champ for cleaning out a barrel after shooting corrosive ammunition at the range. All it consists of is an alcohol dispenser that can be bought from from any well stocked hardware store or Home Depot, (Look in the Paint Dept.). Some clear neoprene hose, and a fired case of the caliber of your choice, and a piece of 1/4" brass tubing.
You'll need a #7 drill along with a 1/4-20 die as well. You can buy a Tap & Die set from Harbor Freight if you need to very inexpensively. I used a steel 7.62 X 54 MM Russian case, but brass will drill and tap easier. You can hold the case in a pair of vise grips if you don't have access to a small bench lathe. It helps to deprime the case if it is boxer primed.
Drill out the primer pocket with the #7 drill, then tap it 1/4-20 through. Take a small piece of 1/4" brass or copper tubing and run a 1/4-20 die over it about 3/8" or so down. The copper 1/4" tubing that comes with refrigerator ice maker kits works well too, if you have an extra piece laying around. Thread the brass or copper nipple you just made into the tapped primer hole, connect the neoprene tubing to the bottle and brass nipple and that's it. You can fill it with Windex, Simple Green, or just plain water.
I put a small O-Ring over the case neck and slid it down to the shoulder of the fired case so it makes a leak proof seal in the chamber. Remove your bolt, slip the case into the chamber, and with the muzzle pointed down, squirt the cleaning fluid of your choice down the bore and it will wash out all of the corrosive salts from your barrel until you get around to doing a more through cleaning when you get home from the range. I used some 5 minute epoxy to seal the threads on the nipple and case. I also have one of these cases made up for 7.62 X 39 MM for when I shoot corrosive ammo out of my AK's. It really works well and doesn't make a mess. If you want to get fancy you can take a tubing bender and make a 90 degree bend in the nipple, and it will be easier to insert into the short bolt actions some of these CZ 7.62 X 39 bolt guns come with. The photos may show the case and bottle slightly distorted because I cropped them.

