The thing about this thread is that is that there are several people responding that have experience , years worth of experience using these so called "weak cartridges "and understand that the information on the box is not the end of the story . The op apparently has zero experience with them and is using the data on the boxes to make a decision. This issue is a good example of "the proof is in the Pudding not the interpretation of the recipe.! I will add this, I have taken at least 8 deer with my 45-70, I don't do notches or memorial every kill I make so I could be a number or two off either way , every one of those deer went down like it was pole axed including the one I took last season. I have had very few deer go down like that when I was using my .308 or .270. In addition what I have found, meat damage is substantially less with the 45-70 that the other two calibers.