The ingredients are as follows:

Puff-Lon Fire Lapping Ballistic Filler is made with disk shaped
polishing compounds of optical quality that has been impregnated into
a light weight 100% natural cellulose (about 1/10th the weight of water,
1 cc=about 15gr. of gunpowder in volume) that is compressible and
resilient. Resiliency is very important to be sure that a compressed
load is always maintained and the position of the powder will not
change. The disk shaped compounds smooth the bore, while irregular
shaped compounds used in other fire lapping kits dig, gouge and
embed into the surface you would like to polish. Think of it as trying to
level or smooth a field. You would not push irregular shaped boulders
across the ground. The polishing compounds are made of particles that
have the capability of traveling with the gases. The polishing compound
smooth out the micro voids left by imperfect machining and polishing of
the barrel or some pits of old eroded and corroded barrels. The
polishing compounds have been formulated into four grades. Course to
extra fine, where the bore can be polished to a literal smooth-as-glass
finish. The product has been granulated so it can be handled with the
same ease as your gunpowder and has an infinite shelve life.

The internal ballistic as follows:

Using Puff-Lon Fire Lapping Ballistic Filler creates an automactic gas
powered polishing compound dispersion process that works when
placed inside your cartridge between the gunpowder and bullet to
create a compressed load. As the primer is stuck and gunpowder is
ignited, the rising pressure compresses the filler forming a polishing
wad behind the bullet and releases the abrasive into a puff of
dry-powder. The polishing compounds are pushed past the projectile
between the inside cartridge wall and projectile before the bullet can
move. This happens before the bullet can seal itself into the forcing
cone. This is proven by ultra slow motion photography, where the
smoke from a fried cartridge can be seen leaving the barrel ahead of
the bullet. As the bullet begins to enter the cone, it starts to conform to
the barrel and a small amount of the polishing compound is trapped
between the projectile and the barrel wall. This forms a micro thin sabot
made of abrasives for the projectile to ride in. As the projectile starts to
spin, the abrasive at the rear of the projectile is thrown against the
barrel wall by centrifugal force. The puff of small particles of polishing
compound that had surpassed the bullet earlier are now waiting in the
barrel for the bullet to renew its' polishing all the way to the end of the
bore. The polishing compounds also smooth out the points and voids
that the projectile never touch. This is where the copper and lead
fouling would normally start the building process by shaving off the
fouling and stuffing it into these cavities. The small particles of polishing
compound that are pressurized behind the projectile are forced into the
piston assembly through the gas port of gas operated automatics. If
you do not want this part of the gun polished then disconnect the gas
tube and work the ejection manually during the process of polishing.