Discussing this with my buddy, and I can't get him to understand (using random numbers here). 1000 rounds of .357 Magnum will last a heck of a lot longer for a SAA platform (or even a DA/SA platform) than 1000 rounds of 9x19mm would for a Glock 19.
I think your buddy understands math better than you.
1000 rounds is 1000 rounds. No matter how you pull the trigger, you'll only fire 1000 rounds. Oddly ammunition doesn't really care what gun its being fired from.
Unless you own a machine gun, guns aren't bullet hoses.
I guess if someone wanted to minimize
his time at a range that rents by the minute, he could load up twenty G19 mags, blaze away and be done in under a half hour. Your buddy on the next lane with his SAA in .357 will take a little longer. BUT..................imagine you are at a range that doesn't allow one to load mags until you are at your station. There you are, hopefully with a MagLula, loading your twenty Glock 19 mags and what's that noise next to you?....its your buddy shooting slow and deliberate. Loading those twenty Glock mags will take you at least fifteen minutes.
Sheer rate of fire and rounds on immediate tap for usage.
One round per trigger pull for revolver, one round per trigger pull for semi auto.
If you are intending this to be a matter of reloading, there are Youtubes of Jerry Miculek reloading a revolver faster than I can reload my Glock. Now, 99.9% of us aren't half as fast as Miculek. Speed of immediate reload is what popularized semi autos.
What you fail to consider is loading six at a time from loose or boxed ammunition vs reloading with inserting a fully loaded magazine.
How fast can you fire fifty rounds through your Glock if you only have one 15 round magazine......and no MagLula?
It's also the dilemma one faces with "Do I carry a semi auto with 7+1 or 15+1?"
Question in all of this- is it worth stockpiling the same numerical amount of ammunition for a platform that you know your either (1. Not going to use often.) or (2. Has a slower rate of fire and load/unload rate than almost any modern cartridge handgun in existence.)
You stockpile ammunition based on usage and need. I have no .32 caliber firearms.......so I stockpile zero rounds in those calibers. I shoot 9x19 most often and keep 5-6000 rounds stacked away and rotate in fresh cases as needed. Same with .223/5.56. .22LR? I lost count at 20,000 rounds.
7.65 Argentine? I have 300 rounds but haven't shot any of my 1909's in ten years. That stockpile will be sufficient until I die.
For the two platforms listed, (throwing out random numbers here), if one goes through 5x the amount of ammunition in the same time frame, wouldn't it be perfectly adequate to stockpile 2k of one, and 10k of another ?
Platforms and calibers are irrelevant, you "stockpile" according to needs. If a person only shoots a box of 50 .454 Casul in his monthly range trip, he likely doesn't need 10,000 rounds sitting in his garage. A competition shooter may knock out 500-1000+ rounds per week. He's likely reloading as well and buys his powder, primers, cases, bullets in bulk. Shooting is his hobby, reloading is his pastime.