Have you ever asked a question, and the answer "because I said so" or it his case the book said so still left you curious?
It's not like I'm trying to shoot into space with it
Anyways, back on track, my 30caliber Tokarev shoots 85 graibullets at 1500 fpm, The wolf gold fmj 85grain at 1720 and I heard of some rounds as fast as 1800 fpm, all out of a 4.6 inch barrell with a max pressure of 42000psi Which is possible from a 357 magnum
If the grains of the projectile are the same, the max pressure is the same, the only difference being the caliber which the magnum is bigger and has more square area for easier launch, it should be possible to go even faster. The highest velocity factory load for The magnum I found is the federal 125grain jhp, just over 1500 fps out of a 4.5 inch barrel, and it is 50%heavier than a 80 grain
I'm not posting this for arguments sake, I would really like to know what sort of speed I could shoot out of a magnum if it was a hot load with a light projectile, just to go for speed, or accuracy or penetration
I just found double tap ammo, 158grain jhp, 1410fpm form 4 inch barrell, would love to see what and how much powder is in it