Powdercoated Cast in PolyGonal barrels?

LeeEnfieldNo.4_mk1

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So, my understanding is that shooting cast bullets in Polygonal rifling like found on glocks and HK pistols is not advisable because the lead bullets foul the rifling a lot faster then jacketed, and as a result can cause increased pressure and potential failure. I know some people shoot cast in there glocks/hk with no issues however so we will leave this discussion for later.

My question is this. While I don't have any experience with powder coated cast, my understanding is that one of the advantages is it reduces the lead fowling by quite a bit. So, would Powder coated cast bullets be usable in polygonal rifled barrels?
 
Yes, but there are caveats.
Powder coated cast bullets fully encapsulate the lead bullet so there is no lead contact in the polygonal barrel. Plus the base of the bullet being coated too means that there is no lead vapourization from firing.

PC bullets in polygonal rifling works very well with little fouling in the barrel....
 
I've put a few thousand XMetal HiTek coated bullets through a Glock. Barrel is always cleaner than with copper plated.

I've shot quite a few of my own cast and powder coated bullets through Marlin Micro-Groove rifling which has a similar issue to polygonal rifling with great results (shot well, zero lead fouling). I've only put a few dozen of my own PC'ed bullets through a Glock but it showed very good results; the volume of 9mm I shoot means casting and PC'ing isn't a good option for me though; I just buy bulk projectiles.
 
Iv'e been shooting PC lead out of my Glocks for years. Sometimes 4 or 500 hundred between cleanings. Even after that it's just basically powder fouling. No issues at all.

Auggie D.
 
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