Tula is the steel lacquered case, bi-metal jacket stuff? Check this out, and do your own research as well. I realize these tests were in an AR, not the platform you were questioning, but the data may prove useful, regardless. I found it to be an interesting read, if nothing else. Hope this helps.
h ttp://www.luckygunner.com/labs/brass-vs-steel-cased-ammo/