Hi folks, I have a question for the more experienced hand loaders out there. I have loaded 38 Special wadcutters (148 grain) for years and became curious about loading them in 357 Magnum (looking for a bit more velocity). Using Titegroup as an example, the Lee manual gives a maximum load for 38 Special as 3.3 grains for 908 fps and 11,800 psi. For 357 magnum the maximum load is 3.3 grains for 909 fps and 18,900 psi. With the same load and the same powder in a bigger case I would expect a lower pressure and lower velocity. Can anybody help me understand this?