Referencing Reply #16
"Now see I don't buy this notion of looking on a box of shotgun cartridges for the dram equivalent. No way will a muzzleloader with its vented breech match the performance of a sealed breech via a cartridge.
To get a muzzleloader to match a cartridge you have to add much more powder and much more shot to which I have no issue in doing other than cost."
-They said the same thing about gas operated self-loading unmentionables for decades, with their gas ports in the barrel; but the difference between a manual loading and self-loading unmentionable is usually only 25-75fps. If your vent isn't shot out, and is thereby giving you consistent velocities, you will be very close to standard loads. Also, the "dram equivalency" is in reference to the similarity of the velocity between the modern smokeless charge and the traditional BP charge with that particular payload in that bore size.
"I here this thing about muzzleloadrs are 25 yard guns with cylinder bores but it simply is not so. Just put more shot in it, stop using anything courser than 3f and stop using thick wads."
-Obviously, most of the shot is going to be able to go beyond 25 yards, but your pattern gets excessively large quickly (especially so with shot smaller than lead BB). The ONLY solution in a cylinder bore is therefore to increase the number of pieces of shot (and some more powder to keep the trajectory similar), in order to "fill in" the big gaps in the pattern (and you get a nice extra helping of recoil to go with it). Kinda wasteful (if there are other options), if you ask me, but to each their own; would much rather use 1/2 oz of shot and 55gr of powder in a choked barrel than use 7/8 oz and 75 grains of powder to kill the same bird lol. Not going to comment on powder granulations, there's several schools of thought on that. Having a nice cushion under the shot tends to reduce deformation somewhat, but some people use thick wadding over the shot as well for some reason; the issue with that is it can interfere with the separation of the shot and wadding at the muzzle (quite a few early breechloading rifle designs had issues with that (like the Westley Richards Monkey Tail).
"Another thing I don't get is how it is believed that a larger bore is better because the shot string is shorter. Not so. If that were true all the popular 20g or .62" muzzleloafers would be useless! My .45 certainly has proved itself!
-Larger bores with the same payload have a shorter shot column in the barrel, this reduces the difference in inertia between the rear of the column and the front. This reduces deformation of the shot, and tends to pattern better. Besides, I'm not sure anyone has claimed that smaller bores are not effective; just that they are less capable than the larger ones (I believe that the Brits came up with a .40-something shotgun chambering for use as a garden gun at some point, but IDK). The reality is that you can fit more pieces of shot (and larger shot) and more powder in a larger bore, and get it to pattern well.
"Does not choking lengthen the shot string to achieve a tighter pattern?"
-it can with very tight chokes (like, extra-extra-full turkey chokes). Shot traveling down a barrel isn't a solid slug of lead, and a choke forces the spaced out pieces of shot into a more dense mass of shot (generally by reducing the shot column in both in length and circumference). Choke restrictions do not have to be very much to be effective (a few degrees is all it takes), and excessively tight restrictions will cause excessive pressures and shot deformation.
"Is not therefore a smaller bore already matching a choked bore of a larger gauge somewhat with a like for like load?"
-not exactly, reference the points I made above about large vs small bore shotguns.
"Is not a smaller bore going to have higher pressure and henceforth higher velocity compared to a larger gauge with like for like load?
Its all myths and bluster!"
-Yes, velocity will generally be slightly higher out of the small bore. My general recommendation is that if you are primarily going to be shooting light loads in whatever bore you are thinking about, that you opt to go down in bore size and use a "more stout" loading in the smaller bore (smaller, lighter guns, and you can download it further than the larger bore, meaning more shots per pound, which is a good thing). Smaller bores are more efficient/economical on powder and shot, no need using more than you need. I like 20, 28 bore and .40" shotguns with chokes for that reason.
"As I said earlier, they all work and better than some think, especially when you think out the box!"
-Absolutely correct.
Unless it's a repro-musket (of which, I haven't owned any for a while), I personally won't keep a smoothbore that isn't choked, or capable of taking tubes, in at least one barrel. I'm a hunter and shooter, not a reenactor; and anything I keep needs to be focused on usability, more than appearing exactly historically correct. Proper, purpose-built shotguns are going to be better shotguns than a multi-purpose gun will be.