what size dot?

Looking to put a dot on my new Ruger 22/45.  What size is the common?  I'd also like to use the same for my 45 when I get the rail put on it.  I see ultra dot is the choice.

Thanks Gents

Joe

Many use a 1'', (25mm) but some prefer the 30mm match dots with different size dots but they are bigger and heavier.

I have a Matchdot II on my CF & 45 but a Micro HD on my 22.  All are set to a 2 MOA dot size.

- Dave

I use Matchdot II's set on 2 MOA. Sometimes if I'm out in really bright sun light I set to 4 MOA

I use Matchdot IIs on most of my guns and shoot it with the 2 moa dot (gives the most precision). Simply increase the intensity of the dot to make it visible in bright sunlight. The 30mm tubes give a greater field of view, which I prefer (even if it is for target shooting). Cheers, dipnet