Lead bullets and polygonal rifling

[mattmillerrx]

A Google search has revealed that there is a lot of contradicting data out there on the subject.  There are claims that it will blow your gun up and other saying it is all a myth.  Both sides seem to agree that they will lead faster than traditional rifling.  I have found some guidelines that basically say to load them light, which I plan to use starting loads anyway and to clean every 100rds which I come close to doing anyway so not a big deal there either.  I have found some info on other forums of some guys that are doing it found nothing when doing a search here.  Of those guys some where doing it in Glocks, which seems to be where all the claims not to do it have originated, others are using HK, one guy had some extensive testing in an HK USP.  There reports seem to indicate that the claims to poor accuracy do not occur until over 100rds have been fired.  One guy fired a jacketed bullet every 10-15 rds to help clean the barrel and claim he could go 200rds between cleanings.  I am thinking of trying this with laser cast bullets which where recommended by one of the guys doing this.  I am basically looking for info on the subject and seeing if anyone has tried it and with what results.  My gun is a CZ 75 9mm, the bullet I plan to use is the Oregan trail 145gr RN .356.

[Lloyd Smale]

its not really the rifling that makes a glock a tricky gun with handloading. Its the unsupported chamber that has caused trouble. they will not take any overloading of cartridges or ruputered brass. So if you load for them keep the pressure down to just where the gun will function and after about 3 or 4 firings toss the brass or leave it for another gun. As to lead. They will do fine but the rifling is shallow and you will need to use hard bullets like a bullet cast out of linotype or water dropped ww to get any accuaracy with them. Ive loaded for my partner at works 10mm and he claims its more accuracte then factory jacketed but his 10mm is working at about 40 smiths power level.

[torpedoman]

I shoot cast bullets in my CZ82 with no problems and was doing it before i heard all the flack. I do understand that the lead will give a tighter seal in the barrel and result in higher pressures and a PLASTIC gun may not be able to handle it. If there is a loss of accuracy i can live with a 24 round group that measures 1 1/2 in at 25 ft.