DP,
The energy argument is what's used by the likes of Wakeman and Bridges to advance their agenda of selling more of
their in-lines and talking "energy", be it potential or transferred, is playing into their trap.
Dan said it right, different projectiles work differently and there is no mathematical formula, at least not that I know of, to show by the numbers the centuries of success and failures of different projectiles. As I said, energy means nothing because all that matters is how good the permanent wound channel is. This is not defying Newton's laws nor attempting to ignore them but when certain projectile and load combinations are field-proven over a century or two of use, one cannot deny the actual results no matter if they can figure out a way to make numbers explain it or not.
As for the .38 v .45 tests, if you don't know the exact design of the bullet, bullet weight, gun and load used in each test, there is now way to accept the results as factual because of the missing information. No matter if the bullet is a non-expanding FMJ, a non-expanding lead or a jacketed steel core, if one does not know the exact shape of the bullet, it's weight, the rate of twist in the rifling and the velocity at the time of impact at a minimum, there is no plausible way to accept any kind of test results since the results cannot be analyzed based on known factual results of ballistic testing on the same or similar bullet designs. Simply stating "non-expanding" or jacketed v cast lead means absolutely nothing because there is no way to confirm or deny the results of any test or theory presented unless one knows
all the details. I'm not saying the tests were flawed or intentionally skewed but without knowing ever detail, there is no other option than to hold the results as "suspect". I don't have the write-up, perhaps the information I seek is contained within but the extremely limited information you provided here is grossly inadequate for making any determination either way.
While none of this modern stuff means anything to ML or BPCR applications, it helps to prove the case that numbers cannot explain certain known facts and that for the simple reason as no one has taken the time or saw a reason to figure out a calculation. 1900 ftlbs of energy delivered to the shoulder of a moose by a 55gr 0.224" HP bullet moving at 3900 fps will have little effect even though the full load of energy is expended in the moose. Likewise a 450gr 0.458" RN bullet moving at just 1200 fps will have a potential energy of 1440 ftlbs yet it will penetrate the moose's shoulder, vitals and exit the opposite side - in the process it may have transferred only 50% of it energy, 720 ftlbs into the moose yet the resultant wound channel created will be quite terminal. I don't know how to present this any clearer that the amount of energy transferred to the victim or the potential energy carried by the projectile does not have any bearing as to if the projectile can produce a terminal effect wound or not. One must remember that the KE formula used by "modern ballistics" is the same formula that was originally created to calculate the amount of work that can be done by a steam piston, not a bullet. Yes, the basic theory and calculation of energy is valid but it doesn't mean anything by itself with the sole exception of calculating the minimum weight and velocity required for a projectile that is going against an armored or otherwise hardened target and that only because one can calculate the level of energy needed to penetrate a known substance of a given thickness - flesh and bone is not the same as armor plate.
I hate to keep going back to modern cartridges but they make the point so well ... Example is the modern Big Five cartridges where some have gone to building super powerhouse rounds in an effort to drive the standard 0.458" and 0.474" 500gr monolith RN's at much higher velocities than were previously obtainable - the reasoning being that increased velocity means increased energy and increased energy means increased killing power ... nice idea pandering to the
numbers on paper crowd but subsequent testing showed that the increased velocity caused a considerable decrease in penetration depth and size of the permanent wound channel - but hey, the energy numbers on paper looked real impressive and unfortunately many of the modern/young hunters have been suckered in by the
numbers on paper hype.
Looking only at numbers on paper, PRB's and even BPCR bullets are not very impressive yet ML's throwing PRB's have been quite effective for what, about 700 years now and continue to be quite effective at putting game on the table yet today. Same deal but not quite the length of time yet for well over century and still today, BPCR's continue to hold their own and in many cases continue to out perform the most modern of smokeless cartridges despite their rather un-impressive
numbers on paper.Personally, I don't care what the numbers look like on paper, I'm a round ball and flint shooter and considering the length of time and hassle it takes to run a modern in-line, I'll stick with my flinter thank you very much.
This is not the place to argue the points of HP's v FMJ's in modern cartridges. If you wish to discuss that topic further, please feel free to email me.