OVERVIEW: IMR 3031 Powder  A propellant with many uses, IMR 3031 has long been a favorite of 308 Match shooters using 168-grain match bullets. It is equally effective in small-capacity varmint cartridges from 223 Remington to 22-250 Remington, and it’s a great 30-30 Winchester powder. ⚠ WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer or other reproductive harm. For more information go to www.P65Warnings.ca.gov