Originally Posted by SBruce
Sounds like way harder steel than what I've got! 7mag to 300 mags with soft expanding bullets will go clean through mine at 200 yds! 338 Edge w/ 300 grain sierra MK went clean through at 400 yds. Even my favorite little 25-06 with 100 grn bullets goes 1/2 way through at 300 yds!
Is the 550 and 600 a hardness reference? I've heard of AR50 plate being the stuff to get, but also heard it was terribly expensive. How thick are these pieces you've got??
AR550 and AR600 is a hardness rating. The harder, the more expenisve, but they last forever and don't mare so you can see all your hits at long range.
AR600 is the eq of Military armor plate. Mine is all half inch. It also makes a great gong sound if it's hung by chains. There is a big difference between regular mild steel and AR550. I don't think there is nearly as big a difference with AR500, but my steels are 550 and 600. 600 costs a lot more and probably isn't worth the difference. It is harder, but past 200 yards your really can't hurt either with hunting bullets.
Hope that helps...