Where I hunt in Elk neck state forest in MD, I always used a rifle, no problem. Now I'm going to hunt the area this year. Now Md dnr says you have to use a straight wall cartridge. So I look up the 30-30 win cartridge, It's listed as a straight wall cartridge. This isn't info from the state, it's what I found online. I plan on using my Marlin 336. Can anyone confirm that the 30-30 is a SWC. The articals had someting to do that 30-30 was made from a SWC the 38-55 . I know it's not a true bottle neck like my 30-06. Thanks.