I am thinking of using IMR 3031 (medium burn rate) powder for both .22-250 and .270 Win. Has anybody used 3031 for those cartridges? Any general opinions on the 3031 powder?

I've used IMR 3031 for about 45 years in .30-06.It is a fine powder for .30-06 and bullets to 150 grain. Use 3031 exclusively in .308 and .223.My Remington .308 rifles make cloverleafs at 100 yards with good bullets and IMR 3031.

I use it in 30-30 and 45-70. I don't like it in the 45-70 however.

Does anybody know what 45 grains of 3031 for the .270 Win (using 130gr SP bullet) might yeild for ballistics?

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My IMR Handloader's Guide lists the following:

Case: Remington
Primer: Remington
Bullet: 130 gr. Nosler Partition
Powder: 45.5 grains of IMR 3031

Velocity: 2,945 fps.

Thanks, Falcon.

While one could use IMR 3031 in the .270 Win., it is generally too fast burning for that cartridge. IMR 4350 or slower is better, and 4350 works in the .22/250 as well. In the .270, IMR 4350 will give velocities higher than you can get with IMR 3031, and with equal or better accuracy AND lower pressures!

Good info. Thanks!

Don't overlook IMR 4831 for the 270 either.