I live where temps can swing 100F during a few months. Loading with ball/surplus powders is a pain because you need to adjust. However, it is cheap and usually shoots well.
My favorite is the H335 equivalents. They work wonderfully in 223 type cases. Also, having fun with them in my M305 (M1A copy). I just know to adjust my loads as the weather/temp changes.
Another is a H380 equivalent. Worked great in my 22/250 and heavy bullet 6BR.
Just be careful of this. There are some powders that came from machine gun ammo. This stuff is horrid. If you want vel variations and vertical stringing, this is for you. The powder meets the design criteria of a machine gun, not a rifle.
You will need to look at US army ammo info to find out the types of powders used for machine guns. The stuff I had was WCC 852. May be different now but my stuff worked great turning my rifle into a shotgun.
Jerry