I have built a titanium sdta form 1 can. I love it. Actually filed another form 1 to build another. I've run it on several ars. Here is my question. I have a 8.5" 6.8 sbr. Safe or not. I've avoided it to this point. One of my buddies wanted to know why. I just assumed it was a no go. What would it do. I'm assuming it would just cause accelerated wear on the first baffle. Which could easily be rotated with other baffles. Of course I'd never consider replacing a baffle it even though it would be extremely simple to do.