I once read, (I think it might have been in one of Baird's books, or else in Buckskin Report) that .52 caliber was the optimum for a muzzleloading round...
I haven't read that particular article...to add some other thoughts, I think there are variables that often don't get mentioned in articles like these, which really throw such across the board statements like these out the window so to speak...just my opinions:
Example...the article's statement:
"...When you get up to the .54 , .56 and .58 you start getting more air resistance, and more drop due to gravity..."I think that can be said of any next larger size ball compared to the previous smaller size ball...if plotted on a curve there may be exponential degrees of difference as the ball size increases, but that doesn't mean if a .62cal/325grn ball is preferred for large bear at 25 yards, that a .52cal should be used instead...velocity, distance, type game are all wild cards that have to be factored in.
Example...the article's statement:
"...When you get to the .50 and below, you loose the ball weight necessary for good clean kills..."As that statement stands I see no truth in it...because distance and the size game are the wild cards...I've taken several eastern whitetails in the 25-50 yard range with a .45 or .50cal PRB and they were down in sight of me, usually with complete pass-throughs from heart shots. In addition, twice while sitting for squirrels with a throttled back .45cal and just 40grns powder, killed a Doe and then a 5 pointer that happened to come meandering along looking for acorns just 20 yards in front of my boots. Moose at 120 yards for example, would be another matter entirely of course...so a larger heavier ball to carry more energy further would be preferred.
Example...the article's statement:
"...Also, they said that you hit the point of diminishing return on velocity when you get above a .52..."I've seen that statement a number of times...but...it always struck me as sort of a "so what" kind of a statement...it reads as if its an either/or situation implying that people should stop using more powder at that point.
But if my goal is to increase velocity by adding more powder, as long as I keep getting more velocity for every increase in powder that's fine...in other words it doesn't matter to me if each 10grn increment of powder yields a gradually declining amount of velocity increase after a certain point...ie: instead of 100fps increase I only get 90, then only 80, etc...as long as I keep getting more velocity to achieve my goal...obviously when velocity flat-lines there's no point in continuing but I've never experienced a 'flat-line' over my chronograph...ALWAYS get some sort of increase.
If I'm punching paper or groundhogs at 100yds, a .40/.45cal would be the obvious choice compared to a .62cal.
If I'm going after moose at 50-75yds, I'll grab a .58 or 62cal rifle off the rack.
I just think there are far too many variables for that article's across the board statements to stand...anyway, that's my .02 cents