I changed the scope on my 22 mag yesterday to a Pentax Gameseeker 3-9x40 and had a chance to sight in my gun today. I've found that 30, 40 45, and 50 grain slugs have very different impact points at 50 yards and using a plex reticle doesn't allow much flexibility with the full range of 22 mag ammunition. With a standard duplex reticle you can only reliably hit with the load your gun is sighted for. With the number of lines in the Pentaplex reticle, I found I could use 45 and 50 grain ammo by using the third line down at 50 yards after sighting in my gun with 30 grain ammo without having to specially sight my gun in for 50 grain loads. This makes my 22 magnum more versatile by making it easy to quickly match the ammunition needed to the game without resighting the gun. The lines are also useful for hold over and windage estimation at extended ranges. If anyone is looking for a very useful scope to get the most out of their 22 magnum, a Pentax scope might be worth a look. I paid about $50 for this scope and it seems like a nice one for a rimfire. rc