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- Thread starter dirteemax
- Start date
personal_aviator
Regular
- Location
- Onterrible
pretty sure I seen some at some local retailers here in Thunder Bay. I think Pritchards Gun repair and GMK Armoury has it in stock.
- Location
- Calgary, AB
coretac solutions has em. just ordered some after reading some reviews as well.
Dennis,
Curious as to why you would recommend JB's? Most barrel manufacturers claim it ruins barrels.
Chris Dichter, Owner, Pac-Nor Barreling
"My preference is cleaning every 20-30 rounds. We settled on the Witches' Brew from Dave Holland, which is 1200 micron-inch aluminum oxide in Kroil. It removes anything that isn't gun-barrel steel. It gets carbon and copper out very effectively. Be careful with JB and abrasives--A JB'd patch around a bristle brush can become a lap more than a cleaning agent."
John Krieger, Krieger Barrels
"I've been asked about the abrasive bore cleaners. My advice is to proceed with caution. Use JB sparingly. A JB-coated patch* becomes more of a surface lap. I've seen people actually lap a taper in their bore using JB on a patch. You want to clean your barrel, not change its dimensions! I'd just put JB on a bristle brush if you feel compelled to use it."
Gary Schneider, Schneider Rifle Barrels
"For the carbon build-up in the throat area, I don't think you need to treat that differently than fouling elsewhere in the bore. I discourage the use of abrasives. JB is a 1200-grit lapping compound. When you use it aggressively, some of that black you see on the patch is barrel steel. JB and Rem-Clean can remove steel and, in my opinion, used to excess, these products will decrease the life of the barrel. Yes I know Tony Boyer uses lots of JB. But he keeps a large inventory of barrels and he has no compunction about wearing out a barrel. Most shooters demand longer barrel life and hence should avoid using abrasives."
Bill Shehane, Two-Time IBS 1000-Yard Shooter of the Year, Owner D&B Supply
"For normal cleaning I use regular Montana X-Treme liquid solvent, with Montana X-Treme Bore Creme every other match or so (100-150 rounds). I use 50 BMG for break-in or if I have a barrel that is giving a problem with copper fouling. (Using the 50 BMG during a break-in procedure, after 15-20 rounds the new barrel is ready to go.) I used to use JB pretty religiously every 100-150 rounds. Now I use the MT X-Treme bore cream in a syringe and it works just as well as the JB and it's not as abrasive. If you use it in the throat area every 100-150 rounds I find you can keep the carbon build-up under control."
Michelle Sutton, Co-Owner, Hart Rifle Barrels
"I've also personally witnessed the damage that can be done with over-aggressive cleaning. I had one barrel that I cleaned using Rem-Clean on a patch over a brass brush. (Rem-Clean is an abrasive similar to JB.) I made 10 round-trips through the bore, running the brush just a bit past the muzzle on each cycle. Then I went out and shot the gun. The groups were terrible and the last two inches of the barrel was packed with copper. I inspected what had been a nice shiny, sharp crown and it looked like it had been bead-blasted. I then measured the bore diameter at the crown and found that the groove dimension had increased .0002" (two ten-thousandths). I ended up cutting a half-inch off the barrel and recrowning it, but the barrel still shot very poorly. It basically had been ruined for competitive purposes.
Chris Dichter has observed that JB on a patch can work like a lap. I personally saw how Rem-Clean on a patch can behave similarly."
"My preference is cleaning every 20-30 rounds. We settled on the Witches' Brew from Dave Holland, which is 1200 micron-inch aluminum oxide in Kroil. It removes anything that isn't gun-barrel steel. It gets carbon and copper out very effectively. Be careful with JB and abrasives--A JB'd patch around a bristle brush can become a lap more than a cleaning agent."
John Krieger, Krieger Barrels
"I've been asked about the abrasive bore cleaners. My advice is to proceed with caution. Use JB sparingly. A JB-coated patch* becomes more of a surface lap. I've seen people actually lap a taper in their bore using JB on a patch. You want to clean your barrel, not change its dimensions! I'd just put JB on a bristle brush if you feel compelled to use it."
Gary Schneider, Schneider Rifle Barrels
"For the carbon build-up in the throat area, I don't think you need to treat that differently than fouling elsewhere in the bore. I discourage the use of abrasives. JB is a 1200-grit lapping compound. When you use it aggressively, some of that black you see on the patch is barrel steel. JB and Rem-Clean can remove steel and, in my opinion, used to excess, these products will decrease the life of the barrel. Yes I know Tony Boyer uses lots of JB. But he keeps a large inventory of barrels and he has no compunction about wearing out a barrel. Most shooters demand longer barrel life and hence should avoid using abrasives."
Bill Shehane, Two-Time IBS 1000-Yard Shooter of the Year, Owner D&B Supply
"For normal cleaning I use regular Montana X-Treme liquid solvent, with Montana X-Treme Bore Creme every other match or so (100-150 rounds). I use 50 BMG for break-in or if I have a barrel that is giving a problem with copper fouling. (Using the 50 BMG during a break-in procedure, after 15-20 rounds the new barrel is ready to go.) I used to use JB pretty religiously every 100-150 rounds. Now I use the MT X-Treme bore cream in a syringe and it works just as well as the JB and it's not as abrasive. If you use it in the throat area every 100-150 rounds I find you can keep the carbon build-up under control."
Michelle Sutton, Co-Owner, Hart Rifle Barrels
"I've also personally witnessed the damage that can be done with over-aggressive cleaning. I had one barrel that I cleaned using Rem-Clean on a patch over a brass brush. (Rem-Clean is an abrasive similar to JB.) I made 10 round-trips through the bore, running the brush just a bit past the muzzle on each cycle. Then I went out and shot the gun. The groups were terrible and the last two inches of the barrel was packed with copper. I inspected what had been a nice shiny, sharp crown and it looked like it had been bead-blasted. I then measured the bore diameter at the crown and found that the groove dimension had increased .0002" (two ten-thousandths). I ended up cutting a half-inch off the barrel and recrowning it, but the barrel still shot very poorly. It basically had been ruined for competitive purposes.
Chris Dichter has observed that JB on a patch can work like a lap. I personally saw how Rem-Clean on a patch can behave similarly."
JB with a patch aroung a brissel brush one caliber smaller than the bore does a very nice job of removing copper, and if you like you can add a couple drops of oil with it. This in no way ruins a bore as suggested above. A lot of custom barrels are lapped bores, this requires something a lot more abrasive than JP or other copper removers. I don't believe you can remove 0.0002 of metal with one cleaning of JB, I call BS on that.
Bill
Bill
Yeah, what would they know.....bunch of amateurs.
