Unknown suppressors OG testing

[xrangerx]

So what's everyone using for minimum barrel contour to fit in the 1.55 OG while still maintaining 0.710 muzzle shoulder for 5/8x24 threads? I just measured an ace #2 and at 19.5" it's right at 0.700", my smith advised no less than 0.710, whereas TBAC says 0.725, I'd like to try an OG but all my short barrel rifles are too heavy a contour. So looks like I'll be dropping $800 on a new pipe.

If I remember right, mine was in between .700 and .71” at 16”, I wanted 18” but it was too thin and my smith gave it the no-go. He was comfortable with it at .705 ish on my 6.5 creed

 

[SteveAndTheCrigBoys]

So what's everyone using for minimum barrel contour to fit in the 1.55 OG while still maintaining 0.710 muzzle shoulder for 5/8x24 threads? I just measured an ace #2 and at 19.5" it's right at 0.700", my smith advised no less than 0.710, whereas TBAC says 0.725, I'd like to try an OG but all my short barrel rifles are too heavy a contour. So looks like I'll be dropping $800 on a new pipe.

Turns out I did have my calipers in the truck! Manual dial so my thousandths digit might be off a hair.

Ace SP3 contour 22” 6CM

Barrel end = 0.720”
Barrel at back of OG = 0.760”
OG rear inner dia = 0.850”

 

[Ajsomp]

I have mine on a PB 18" tikka hybrid light. Fits perfect.

Exactly what this is. For visual reference.