I have had an Ultradot 25 on my SRH in 454 Casull for over 6 years with ZERO issues, in fact the gun broke at about 2000 rounds and it had to go back to Ruger from some springs and such, but the scope has never failed. It has worked so well, I put one on my BFR in 500 JRH and after a few issues with the return spring that Ultradot fixed at no charge, I have been able to put about 200 full house rounds through it with no issues. From my experience, Ultradots are the why to go if you are scoping a hand cannon. Just my 2 cents Good Shooting!!