In considering your upcoming squirrel hunting excursion with a dog, as depicted in various videos, it may be prudent to employ a shotgun, such as the Pedersoli 10ga or the 12g, to ensure a sufficient harvest, as the dog will likely require additional squirrels. Alternatively, the Kibler 20ga flint could be a viable option. As shotguns are my preferred choice of firearm, it is essential to possess a high-quality black powder shotgun, such as the aforementioned options, for this type of hunting excursion.
You could use either or.. I just like shotguns. if you don't already have nice BP double or smoothbore?