I've seen a couple of good tubed 16s at 600 for grins, they ain't bad, under MOA.....
3 guns, thats not even a good start.... ya know what I mean...
On the comments on ear muffs/plugs... I agree but I'll also tell you this, I'd sooner shoot my 26 inch without, than a 16... I've shot the 16s with custom plugs in and they are still loud.