This mount has a .500" radius on the bottom. It should match up with 12 gauge barrels as well.
Yes, it will: KK-T8-TCENC-46901
Recommend you email us at techsales@opticsplanet.com to help you further.
Yes it should work.
20 MOA is a cant that allows you to free up elevation adjustments to be used in your turret for longer distance shots. It can make zeroing the rifle for closer distances more difficult. Either would work on the Thompson Center Encore.
As long as it is a Thompson Center Encore model barrel it will fit.
This will fit all calibers of T/C Encore that are drilled and tapped. The rails only come in one height, however you can use different heights of rings depending on the size of your scope. If you email us at techsales@opticsplanet.com with your scope information, we can assist in finding the correct height rings.
As long as it is an Encore 20ga, this rail should fit.
Unfortunately this rail will not mount on the T/C Strike, it uses a different mounting pattern. We don't have any rails for the Strike at this time, however the Strike should have come with a weaver rail. If you just need an extension to that rail, you can use this:Â https://www.opticsplanet.com/weaver-thumbnut-riser-rail.htmlÂ