That at one time was a standard way to economy load for the smaller rounds. After ww2 some of the mil-surp. powder like 4831 was so cheap people would stuff it in anything they could even if it didn't make full pressure. It sure makes your reloading $ go further and if you learn to shoot the load the critters don't care a bit. I'm doing this in my 270 Tikka at present.
I'm burning wc872(50 cal ball) with a bunch of 130 grain bonded 2nd's that I got for $8 a hundred last Feb.. I'm loading this for less than $8 a twenty and it'll put ten in an inch at 100 yards. Free range brass sweetens the deal even more. The only sacrifice is the load only gets around 2700 fps, but I haven't seen the hundred yard target spit one back at me.
I have hotter ammo for hunting, but the way this shoots it may be a heck of a doe round.