TSS Shot

[Harold Pickens]

So my old 870 , is cool with TSS, but a SSS is not . Has metallurgy declined?The SSS is chrome steel, and has more open chokes, if large steel shot that doesnt compress is ok thru it why would the small shot size 9s be a problem. I could understand if you were shooting 4s or larger.
Are the Mossberg .410s a higher quality barrel that tungsten is ok thru them?
Puzzling to me, not saying anybody is wrong, but will have to look more into this.
Anyway, will be out tomorrow turkey opener shooting TSS9s thru my 870 full choke

[Mike of the Mountain]

I shoot TSS through my Remington turkey pump gun with turkey full choke. Same with the Savage .410 single shot, full choke. Modern chokes, modern barrel steel. No issues. I wouldn’t shoot it out of my tight choked Parkers. 1 1/2 oz of TSS through an old choke at .035-.046 might be an issue. Same for steel out of those tight chokes. Something possibly might give and it won’t be TSS or steel.