Tru Lock Federal HW7s choke

[mightyjoeyoung]

sorry my last post I typed it wrong it should have been .620- .060 = .560 or .560 + .060 = .620 . next time i'll read it before I post it

You're fine. I'm saying the website has the bore diameter at .640. THAT would make it 0.020 larger...

[troutfisher13111]

That's just an example they use to show you their system, it's not anything to do with the actual choke

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[corp]

That's just an example they use to show you their system, it's not anything to do with the actual choke

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Bingo. The example is for a 12 GA .640 Dia. choke. The sku # below it is for a Rem. 20  GA .560 choke.

[tnanh]

My Tru Lock heavyweight 7 is a .560. I measured it with digital calipers.

Well then that means either the website is wrong or your calipers are off, because .640 minus .060 is .580...

Where did you get that a 20 gauge inside diameter is .640???

Once again, you are reading it wrong but no big deal.

NOMINAL bore is around .615 and there are over bored 20 gauges,  though I got it from the OP's post since you're asking...

[savduck]

The old heavyweight choke and the new tss choke are both 560