@pnutty, the load looks good. try one test before you change primers - shoot the same loads that pierced primers already, and take one more click out of that gas block - take one click of gas out of it, reshoot the loads that pierced, see what happens.
If that still pierces primers in those same loads, change those loads over to the CCI 41 primers and retest a few. A sample size that's large enough to either rule out pierced primers, or shot that it's still piercing primers with 41s in there.
You might pick up some speed with the change to 41s, so be ready to record that info - but it's not as important as finding out if you'll pierce 41s.
Side note - and I have not tested them yet, but will - Winchester took over the Lake City Ammunition Plant, they run it now. They are now making their own "CCI 41 Primers" at that plant, under their own Winchester name. I'm sitting on 5k of them, just haven't tested them yet.