Hi All! I'm just getting started with reloading for my .270 and was wondering what kinds of powders generally work best in these guns? I'm currently working on 110 gr Vmax and 90 gr Sierra loads, but I'll be trying some 140-150 grain loads later on. Also, I've noticed that some of the powder numbers are listed from multiple companies (like 4350 being made by IMR, Hodgons, and Accurate), are they more or less interchangeable? I'm looking at the current situation with the lack of supplies at the stores and wondering which ones I should be stocking up on. Thanks for the help!!!