Steel cased ammo such as wolf and Tula is not steel core ammo, shooting AR500 with bi-metal ammo is not different that m193, M855 is steel core and it will put pits into AR500.
I have cut many projectiles from various steel cased ammo in half and it has been a soft lead core every time, most M80 7.62x51 ammo is bi-metal, the steel used in the jacket is a very mild and soft steel that will only cause your barrel to wear out maybe a couple of thousand rounds faster than copper jackets, in the Lucky Gunner test the steel cased barrels wore out around 8k and the brass around 10k, now keep in mind these guys were running the guns simulating full auto fire, they way most of us shoot we will get far more rounds down range before we see the barrels wear out.
In a test I helped with we ran over 1k of steel cased ammo, 1k of m193 and then 500 rounds of M855 on some AR500 target in two range sessions, the M193 and Tula left zero Divets on the targets, the M855 put small pot marks on the targets and after 500 rounds the target started to bow in the middle, these are 3/8” thick targets, the 1/2” we tested the second time around held up perfectly with the Wolf/Tula and M193, again the M855 left small pot marks but even after 1k of M855 it did now bow, after testing was complete the range director approved the use of AR500 in the short bays as long as you were not shooting M855.
Take that for what it’s worth but I have never seen wolf or Tula in .223, 7.62x39 or any handgun caliber harm an AR500 Target, .308 or 7.62x51 inside of 100 yards then yeah it’s going to jack up your stuff, but copper jacked rounds will as well.