What calibers is IMR 4227 good for? - TheGunZone
https://thegunzone.com/what-calibers-is-imr-4227-good-for/
WEBFebruary 18, 2024 by Wayne Fletcher. IMR 4227 is a versatile gunpowder that can be used for a variety of calibers. It is most commonly used for rifle cartridges with heavy bullets and large case capacities. The burn rate of IMR 4227 makes it suitable for calibers such as .22 Hornet, .30-30 Winchester, .444 Marlin, and even some pistol cartridges.
DA: 16 PA: 90 MOZ Rank: 40