bore barrel polishing

[Bullfrog]

Why would it ruin the rifling?

Why wouldn’t it hurt the rifling?

Diamond is harder than steel. Diamond removes steel if steel and a diamond are rubbed together.

Are you saying that the small diamonds in a diamond based polishing compound aren’t actually engaging and being abraisive to the steel of the barrel when the polishing occurs? Or that they are removing steel, but that’s ok because its at a microscopic level?

[Jadocs]

Whenever someone says not to use a bore snake, I will refer them to this thread.

[Motorhead]

Whenever someone says not to use a bore snake, I will refer them to this thread.

Personally USE a bore snake in all my AG barrels !! .... Tho with No brushes in them.
If needing to brush ? ... do so with a cleaning rod & brush.

[K.O.]

well a heck of a lot depends on what barrel it is... even some toothpaste that has hydrated silica(Mohs of 7) can be very abrasive to softer steels like 12L14 (Mohs of ~3.2)... I feel 12l14 is one of the good suspects for L.W.  Barrels as it machines well...  L.W. barrels are much smoother than Crosman barrels and both are button rifled... So the conclusion I come to is that they use one of the sulfured steels (better machinability)...

Point is they are pretty soft... on the other end of the spectrum are the hammer forged barrels...Crosman barrels spark like plain low carbon steel (mohs 3.4) ...

so you want to look at both grit size and  Mohs  in relation to the Mohs of the barrel and it's rifling height/style... then  are you trying to lapp out a rough spot or tight spot or just a general polishing...

or just cleaning out lead (mohs 1.5) softer toohpaste with baking soda(calcite Mohs 3) will do the job...

https://www.google.com/search?q=abrasiveness+of+toothpaste&rlz=1C1GNAM_enUS688US688&oq=abrasivness+&aqs=chrome.2.69i57j0l5.9995j1j7&sourceid=chrome&ie=UTF-8

https://rceco.com/img/RSBook14.PDF   

so yeah which barrel it is matters...

[tronickero]

in conclution i can use the diamond polish compound but need remove it with solvent and procure no leave any residues after the process.

Tron, the issue isn't so much about whether the diamond compound will work to polish the bore, it's that the abrasive will embed into the cleaning rod.  I do not see how a solvent can remove it when it is mechanically bonded to the rod.  But frankly I don't suppose it's all that bad if you will never use the rod from the muzzle end of a barrel.  Polishing should be done from the breech end anyway but on occasion you may find a need to use the rod from the muzzle end, such as to dislodge a stuck pellet.

thanks u jason, now I understand the problem of the diamond paste ( I always read your posts,and y learn too much. is an honor for my your answers).

I'm going to stop giving round to the subject, and i will import JB bore paste and bearings cleaning rods

Tron

[Job]

Whenever someone says not to use a bore snake, I will refer them to this thread.

Personally USE a bore snake in all my AG barrels !! .... Tho with No brushes in them.
If needing to brush ? ... do so with a cleaning rod & brush.

After how many shots you pass bore snake ?

[Motorhead]

Whenever someone says not to use a bore snake, I will refer them to this thread.

Personally USE a bore snake in all my AG barrels !! .... Tho with No brushes in them.
If needing to brush ? ... do so with a cleaning rod & brush.

After how many shots you pass bore snake ?

Generally draw the snake threw a couple passes every 2-300 or so shots in my match guns, try and do at least every tins worth in the field guns.

[rkr]

Why would it ruin the rifling?

Why wouldn’t it hurt the rifling?

Diamond is harder than steel. Diamond removes steel if steel and a diamond are rubbed together.

Are you saying that the small diamonds in a diamond based polishing compound aren’t actually engaging and being abraisive to the steel of the barrel when the polishing occurs? Or that they are removing steel, but that’s ok because its at a microscopic level?

Uhh, removing roughness in the rifling was the purpose of this thread I believe. For that we need some abrasive action to smooth out the high spots that tear out lead from pellets. That's done by abrasive paste (diamond paste being good example) and most often a barrel lap or in some cases cleaning patch or bore snake with abrasive in it. So, if we do that and make the rifling smoother it will not hurt/ruin but rather improve the rifling. Of course excessive lapping will expand the bore diameter but that's why we have different size pellets and sized bullets. I have lapped 0.001" out of a bad barrel with diamond paste and it took a LOT of lapping causing a barrel that shoots much better than it did.