Re: Conservative with Reloading
I keep it simple, and use mag primers for mag rifles, standard primers for standard calibers. There is a school of thought that you should use magnum primers with Ball powders, especialy if your charge weight is over 50 grains.
Magnum primers are used by some when catridges like the .25-06 and .270 are loaded with slower powders, like Rl-22, the various 4831s, etc. Many also use magnum primers to fine tune a load.
One thing to remeber, you need to start load development over when making the switch, starting with the lowest charges.