Ok, so can you shoot plain jane lead bullets without the copper wash throught GM barrels or should you use the type with a copper wash like the LR mini mags?ChiefDave said:Chief Says : You dont have much choice.
All Long Rifle bullets are lead , some just have a copper coat
"wash " added to them. They are not jacketed as many think.
Steel is much harder than lead. How does the lead impregnate something that is many many times harder than it? I know that the lead is hot, but hot enough to alloy with steel ?ChiefDave said:Chief says : The Soft lead can burn (impregnate) particles
of itself into the rifles bore ( rifling). A breakin session ,
limits the bore to how much is gathered at one time.
So "breaking in" a .22 lr barrel is basically a myth then ? Unless you call filling in low spots/pits in the barrell breaking it in ? Maybe the lead smooths out the bore by filling in those spaces.Antlurz said:Impregnate? I think we may be seeing the beginning of a semantics war here. The lead will find any smalll variations in the bore surface and fill them with lead if given the chance, then, the lead will adhere to itself as shots proceed, building it up. If there is a rise in the bore surface, then lead can be shaved off the bullet and deposited on the surface behind the protrusion...kinda like a cheese grater at work.
Any removal of material of the barrel itself caused by the passing of the bullet is going to be at a FAR slower rate than one would find in a copper jacketed center fire situation.
The surface speed of the bullet is between two and four times, on average, slower in a rimfire, and the abrasive qualities of lead, compared to copper is miles apart. The heat factors involved aren't very comparable either. There is very little to compare between the two.