I've got 4 8lb jugs of Promo on my shelf because of what you just described. That and the Unique I have loads everything I load if I want it tooLet me put it this way.
Since reading about Harris's "the Load" and finding out that fast powders like Red Dot could be used across shotguns, rifles, pistols. I started looking for load data for every single caliber I had.
And I started buying Red Dot. That was 3 years ago.
After getting my latest 8 lb jug of Red Dot that puts my stash up to 23 lbs of Red Dot and 8 of Promo which is getting used in shotguns.
I have yet to find a rifle caliber with which a simple effective load with Red Dot can not be found which is both safe, effective, and thrifty.
For lower powered loads, from .223 to .357 mag 4.6 grains is my first choice. I do not know why, but this load is accurate in everything in which I have tried it.
In .357 mag at 50 yards it put 3 boolits in one ragged hole. Not a cloverleaf, tighter than that.
In the Mosin Nagant I like 10-13 grains behind the Lee .312 beagled or leemented out to .314 gas checked and sized to .314 lubed with BLL.
In the .444 Marlin I use the .430 310 gr wide meplat round nose gas checked over 13 grains of Red Dot.
No chrony so strickly WAG but I would say 1500 -1650 speed wise.
I suspect these would go lengthwise through any critter on North America.
Whats more the 4.6 grains load costs me about 1.6 cents per shot including shipping and hazmat.
And it will make a LOT of shots for a pound. Over 1500 in fact. Thats thrifty.
I use Red Dot in my pistols, from little 7.62x25 to .45 acp, lots of 9mm from 3 grains to blue whistlers over 4.5 grains in my Hipoint Carbine.
It runs everything. One powder yeah, I live it. I do use a little bit of IMR 4895 now and then for my Yugo SKS.
Red Dot works in it also, but it turns it into a Yugo version of a K-31 swiss straight pull bolt.
You do have to take extra precautions to guard against double charges. Fact of life, be careful or pay the price.