I have a 22 Ruger Single Six (6") with the exchangable LR or MAG cylinder. I use Winchester LR with very good accuracy. But, I'm not having any luck with the MAGNUM cylinder. I've used different magnum brand ammunition, (Remington, Federal, Winchester, CCI) but each one leaves pieces of tiny unburned power. That causes the cylinder to rotate improperly and the ejector rod gets hung up. What's the deal? Someone told me the magnum round needs a longer barrel to burn the powder away. Well, DAHHH, why make a magnum cylinder for a revolver if that's the case. I hope someone can help me because a magnum round is much better on groundhog than the LR.