Five steps
How to apply Pb Blocker
Clean, warm, swab, let it set, swab again. It also works in the field without warming.
What build-up does to a cleaning day
A bore that has seen a few boxes of ammo is lined with lead, copper or plastic, depending on what went through it. That layer is what turns a quick wipe-down into a scrubbing session, and it is what a coating has to get ahead of.
Pb Blocker works by putting its own coating down first, so the fouling has less to grab. Reduces all build-up, easier to clean: the application below is the whole job.

A hair dryer warming a barrel blank in a padded vise before Pb Blocker goes on.
Clean, warm, swab, set, swab again
Pb Blocker was originally formulated to combat lead build-up in the barrels of Glock pistols. Testing found the same results on lead, plastic and copper, so the method that works in a Glock works across the rest of the rack.
A warm barrel takes the coating best, which is why a heat lamp or hair dryer is part of the kit. Out at the range or in the field, skip the warming and the coating still works.
The five steps are laid out below as a strip you can scroll through, one frame for each stage of the job.
Then shoot more and clean less
Once the coating has set and the excess is off, the barrel is ready to shoot. Chuck Hudson of Edgewood, NM, treated everything from his 1833 long rifle to his Enfield and Mosin Nagants, and the point holds for any firearm: a coated bore gives up less at the next cleaning.
Pb Blocker is $16.95 a bottle and every purchase is 100% satisfaction guaranteed. Orders ship from Farmington, NM. If you want to talk through your barrel first, call 214-274-4321, Monday to Saturday, 8am to 6pm.
Pb Blocker. 100% satisfaction guaranteed on all purchases. Call 214-274-4321.
The swab ritual
Five steps, one bore
For best results the barrel should be clean and warmed with hair dryer or heat lamp. PbBlocker will work in field conditions without warming.

Clean the boreA bronze brush clears the fouled bore before anything goes on. 
Warm the barrel with heat lamp or hair dryerA hair dryer warms a barrel blank held in a padded vise. 
Moisten a loose fitting patch and swab liberallyA patch on a brass jag entering a clean bore. 
Let setThe barrel rests on a bench rest beside folded patches. 
Swab again to remove excessThree used patches, each cleaner than the last.
For MSDS: www.54go.net