Notchy Bob has you on the right trail. One step better , in addition to Bob's idea , pull out the stops , and go see and handle some Jaegers. I did it the hard way , though fun , for a psycho m/l gun mechanic like me. Back in the early 1970's , I ran into a noted local m/l gun builder , Phil Cravener and he was shooting a scratch built Jaeger rifle. I was so motivated at seeing his rifle , and through studying Shumway's literature , the following year at the shoot , I had built my own version of a Jaeger rifle. I found out through using the one I created , I had listened to some "bad birds" , that said big calibers were traditional ,but not understanding the statement in that big calibers were made for hunting game over bait from elevated blinds to make sure kills, at short distances. So ,( Dunce Boy)
, that would be me , built his gun in rifled .69 caliber. I found out that stoking up a short light large cal. rifle , to shoot deer on foot was a bad idea. So , not to be deterred by ignorance , I built another Jaeger for a guy in .54. This gun was an improvement , over the large bore .69 cal. gun , I started with , due to the reduction in caliber. Over time , I built several more reduced caliber Jaegers for other folks , and finally , through Kit Ravenshear's help , settled on a Durrs Egg British style Jaeger , in the powerful ,and accurate rifled .62 caliber. With 90 gr. FFG , no deer escaped from being hit with this gun. As my eyes aged , I needed a longer sight plane , and lengthened the barrel to 37 ". Still a very good and accurate rifle. I encourage you to own a Jaeger or so , and keep the caliber down from .62 or less , for deer , if you intend the gun for that purpose. I think I learned good info over the years , but it wasn't the easy road of research from existing literature. Gotta say though , it was fun.......oldwood