guns

Ammo brands can have a small difference in residue buildup, but not enough to consider one other another. You'll want to focus more on what shoots accurately and reliably in your specific rifle.

I'd recommend checking out BlackFlag Civilian's videos. He's a leftist who covers relevant topics, including how to select ammo, how to set up comms on a budget, and more.

I'd also suggest TacticoolGirlfriend (who has a great beginner series) and InRangeTV's videos.