Hello TNWILL,
I don't know if this will be of help to you since it's not the exact cartridge you're wondering about, but the 41 GNR #2 by Gary Reeder is the 445 Super Mag necked down to .41 caliber.
I own one with a 13" barrel and it has a muzzle brake - I can guarantee you that within 100-150 yards and with a good shot in the boiler room, you shouldn't have any trouble flattening any animal in the 48 states and probably a lot of light skinned African game. The 41 GNR #2 hits very hard and I can only assume that the 445 Super Mag would be equally devastating at the shorter ranges if not more so due to generally heavier bullets being available.
I hope this is of some help.
Safe and good shooting to you!
Javelina