Well let me answer this question for ya, hell smoothbore is my name lol (not really). First of lets sort out your Springfield 1795 question. The reason why they cant hit anything past 50 yards is because they are using a paper cartridge military load. I did the same thing with my first smoothbore my Pedersoli Brown Bess that I won in a raffle. I brought it home and immediately started making paper cartridges and .715" round balls. I was dead set on showing those deer what musket made 2/3 of the world tremble in fear, hell I even bought a cartridge box. Then reality struck the two deer I got with my "Military load" didnt suffer but my shots landed high and right on deer one and low on deer two. I carefully took aim resting the musket on a log so I knew it wasnt me at issue. So I moved up to a larger ball and patch. This time I used a .730" ball and .010" patch. I was then getting 4" groups at 60 yards and took two more deer with my Bess. The militaries back then had inferior powder to what we are using now so it created a lot of fouling so an undersized ball was more suited for repeated volleys. The Bess back in the day was .75" but fired a .69" ball. On to the next, you'll note that most smoothbores are large in bore (.62"-.78"). This means they will eat a lot of powder and lead. You'll want to think about how much powder you have ( if you have none get 5-10 pounds of it). I used 2-1/2 pounds of powder my first year with my bess. Once i finally got my Bess trained well it all in all killed 4 pounds of powder ( due to working out round ball and shot loads). You asked what bore, length and style. Well here is my reccomendation either go shorter and pick up a Pedersoli trade gun in .62/20gauge or go longer and get a nice Fusíl de Chasse. The Fusíl de Chasse is a nice fowler. They come in a variety of bores typically .62/20 but can be had in .66/16 or .72/12. Personally I would like to have a 12 gauge .72 Fusíl de Chasse. Then youll want to consider barrels and other things. First Fusíls are most likely going to have a 42" or 44" barrel although some are cut down. I would like to have a 44" barrel personally and my Bess has a 42" barrel so the extra two inches arent bad. You'll also want to decide if you want a rear sight. Personally I would want a rear sight on mine when I go for one or build one. A rear sight is great for a begginner. Once you have a smoothbore picked get some roundballs and some shot for it. Remember to never use Steel shot as it will tear up your bore or any hard metal for that matter i.e. Copper, Tungsten, Titanium, Alloy or Tin. Use only Lead and Bismuth shot. It can be bought off the internet in bulk in up to 10 pound bags. Then head on over to track of the wolf and get some shooting supplies like card wads and either buy some gear here or TOTW while you're there . Personally I only own three rifles. One is a Percussion underhammer, one is a .54 cal Mortimer and the last is a c.1790 Infantry Rifle from Britain that I dont hunt with cause I dont want it damaged. All of my hunting has been done with my Bess and Bess carbine. This month I plan on going for a Turkey with my Bess. My best load is 120g FF powder then an over powder wad and card followed by 3 oz of No4 shot in a paper cartridge and then an overshot card. Ram her all home and last year's gobbler got the buisness end of the smoke show at about 30 yards. ( I use the paper cartridge to hold my shot similar to what shot cups in modern shells do). It will all seem complicated at first but that is what this forum is here for. This forum helped me along to where I'm at today and it will help you too.