I recently stared looking I to rimmed cartridges for several reasons. Between leverguns and wheelguns, there are a lot of uses for them. looking at the size of the 45 long colt, I was wondering why it is so much weaker than 44 magnum. They seem as though they should be similar. Is this because of the age of the cartridge? Do they keep it a calmer load to prevent breaking these older firearms in which its chambered? If so, why don't ammunition companies make a weaker load and a hotter load for new guns?