bwframe and gregkl, my Venom Viper is going on it's 2nd or 3rd steel season without a problem. Mine is the 6moa. 6 is much easier to pick up for steel and for sunny days at the Riley club. I would'nt mind trying an even larger dot for what I use it for. I started out with a ADE 3moa on a 9mm Canik SFX. I drug the ADE back out two weeks ago to put on a .22 that I'll be using for steel. I'd rather have a 6moa but the 3 will do for now on that. Even this cheap ADE has held up on the 9mm. It is just not the same quality. For $50-ish it is cheap enough to try if you are just dipping your toes in. I even see that they are making a 6moa now. https://www.ebay.com/itm/Ade-RD3-01...130633?hash=item4b6857c889:g:35UAAOSwKLVdQcoV It is almost $90. I have seen Vortex for as low as $179.
With my slight astigmatism, my 3 moa dot looks like a 6!