I have a SAS M-47 223 can, and my brother in law has a SAS 30 cal can. We have identical Sun Devil 20" 223s. His is actually a little quieter than mine! This only difference is his is 2" longer. I also have a SAS Titanium 338 can for my 338 Lapua magnum. All 3 are hearing safe for everything we have shot through em. You will probably see a shift in point of impact. Most calibers amongst the three cans shift down 2" at 100 yards.
The SAS 30 cal can is rated for any 30 cal magnum, and of course any caliber below 30. He uses his for 7WSM, 308 Winchester, 243, and two 223s. At less than $500 for the stainless model IMO it is the best bang for the buck. Also, if you are worried that SAS may give something up in quality, reliability, sound, ect, don't. They are actually Accuracy International America's suppressor of choice.
The down side? He is a one man shop, and takes forever on his form 3's. If I were to do it over again, I'd find one of his stocking dealers.
Take care.