Plastic Ammo?

I've heard rumors about polymer cased ammo for years.  I even vaguely remember firing some, but I can't seem to recall the brand.  Anywho, PCP Ammo (I guess THC ammo was already taken?), is hoping to revolutionize the ammo market by using polymer cases instead of brass or steel.  The biggest benefit of the polymer is the fact that it is about 50% lighter (the casing that is) than brass.  Thus allowing the good guys to carry more ammo in the field. 

Additionally, PCP ammo should be cheaper to produce and supposedly more accurate.  I'll save you the physics lesson and just say the accuracy has to do with how brass expands in the rifle vs polymer.  The polymer is heat/melt resistant so it shouldn't cook off in your barrel.  Check out the video below of the PCP ammo in action. 

PCP has two varieties of .308 and one type of .223 listed on their site.  No word on pricing or other calibers.  I suppose this could be a real game changer if the cost is low and the performance is decent.  My concerns stem in how the polymer will hold up over time and in the elements.  I still have cases of WWII ammo that my grandfather purchased for dirt cheap after the war.  Could it be possible that my grandkids will be shooting my left over polymer rounds 60 years from now?  I also wonder if there will be any fouling issues with bits of plastic hanging out on the inside of the weapon. 

I'll keep you posted when more info surfaces, and hopefully this ammo will be available soon.

Hat tip: Guns America.