I just got a Ruger Single Six 5.5" with mag cylinder only. I have read old threads from a year or so ago and many decry the inadequacy of the .22 Mag for defense or even starting a foot race for that matter. Not interested in those responses, opinions or arguments. However, if I was at the range shooting this Ruger with my cheapie Armscor range ammo and spotted a pack of wild dogs at a distance, what currently manufactured "performance" ammo do I need to have in my range bag for such critters. Lets call them German Shepards for those who need "specifics" and say I plan to open up at around 25 yards. If it works good in the revolver, I may want to try them in my Ruger 96/22M or old bolt Marlin.