[peano]

Snap N Seal Compression connectors need the braid to be folded back or you will never get them on. I would never cut the braid off. It is just as important as the centre conductor.

This the way I have done it for years and have never had a connector fail:

http://www.youtube.com/watch?v=c_hOCZZ23YA

 

[peano]

I meant by leaving the braid on and not folding it back it would be nearly impossible to get an SNS6 connector on properly. Cutting the braid off is not the correct method.

You have the correct Tapcons. I always use the biggest diameter available.