quote:

No perceivable run-out on the ones that I purchased.

And how did you measure the runout?

quote:

Hrcjon, I am still curious as to the circumstances of your bad setup.

I've had several. Here's a couple of examples. First was a three lug that wasn't right when I measured it. I thought originally it was the suppressor adapter and got that exchanged but in the end the barrel was milled improperly (this was a 9mm HK clone). Second was a barrel that I had cut from 16 to 14.5 and P&W a surefire on it. Simply wasn't right. The person who did it fixed it, but the diagnosis was the threads were not concentric. The third example was a scar 17 moving from the factory brake to the needed surefire mount with an adapter to deal with the shoulder issues. It wasn't right. In this one I just swapped parts till whatever tolerance stacking was causing it was resolved.
There have been a few more, but those are good examples.

I am usually OCD but so far I have gambled with mounting suppressors without checking with an alignment rod.

I have used cheap palmetto state barrels (3 of them), one Larue Stealth. All of those in 5.56.

I also have a CMMG Banshee 9mm. On all of those I have had no alignment issues, but I do mount the suppressor mounts properly with shim sets of varying thickness to time the mounts.

I have a Thunderbeast Ultra 9 coming and I will probably get an alignment rod for that.

Ironically I don't even have a rifle for the thunderbeast yet, and it's probably going to be a 6mm BR, 6 Dasher, or 6 GT, so on a 30 cal can I would have to have really bad alignment to have an issue. And that will likely be a pretty high end rifle from a good smith so I don't anticipate issues.

quote:

Originally posted by sigfreund:
I believe that checking by using the visual method mentioned, if nothing else, is essential.

I checked mine visually by looking down from the chamber end through the suppressor and everything looked square.

quote:

Originally posted by sigfreund:

I have seen a direct tread suppressor (not mine) go down range as a result of not being tightened properly and personally experienced gross POI changes when my own loosened slightly. I carry a silicone kitchen hot pad in my range bag which is good enough for how I use my can.

I witnessed a Silencerco Omega go down the hallway of a shoot house because the ASR mounts had some issues with coming loose.

Thankfully you could only see a tiny shiny spot on one baffle where the bullet had just kissed it, no damage to the suppressor. My buddy is super OCD so he sent it in and they recored it for him even though the damage was purely cosmetic. He went to the Dead Air keymo mounting system after that.