Today while reading some threads ran across a situation where an individual had a Mossberg choke tube break using TSS. I sent Mossberg a message asking if their XFull choke that came with my 500 is TSS rated. Response from Mossberg "Good morning, the choke is going to be for lead only. If you want to shoot TSS, I would recommend a choke rated for the shot through Indian Creek, Tru Lock, etc." ....well, I happen to have a Pinhoti choke tube. So, while changing them out I notice that the Mossberg X-Factor choke is noticeably heavier than the Pinhoti tube. Not breaking out the calipers or anything, but the walls look to be the same thickness. The end of the Mossberg choke is w/o a doubt thicker than the Pinhoti, yet Mossberg recommends aftermarket. I have an Indian Creek in my single-shot and performance is top notch. Just don't understand why Mossberg would not reccomend TSS with their choke when it appears for all tense and purpose more substantial than the Tru Lock choke. Thoughts/opinions?