There is 2 issues to using M193 bullet with suppressor...
Excess heat over time will supposedly cause the lead inside the jacket to become molten, so the bullet will do goofy things ..
Take a std M193 bullet, look at it, there is minimal bearing surface for the rifling to cut.. bullet looks like a football ---> Take 1 and set it in the jaws of a caliper, similar to how it would ride in the barrel, and look at the actual contact with the surface of the caliper jaw. Your safest bet with a small holed suppressor is to use a premium bullet with a flat bearing surface.... I used a lot of Hornady, 52gr HP, and 55SP from Speer. Most of the "good" bullets have a straight flat brg surface, so stability should be no issue.
That said, I have also used std M193 out of a BOWERS "MOUT", on my 7.5" DPMS, and had no issues with the small slight over 1/4" exit hole.
The MOUT has been changed to aluminum guts recently, and resides on a 10/22, as it actually too small diameter and too short for killing muzzle blast on 556. My main 556 suppressor now is a WARRIOR, which replaced my Triple-X as a repair/upgrade.