IMR 3031 with Nato .5.56 brass

[Bill Nance]

Going to be reloading some LC 08 brass today with 55 gr fmjbt. Anyone used IMR 3031 in this application? It's all I have for rifles atm wanted to see if ya'll were using this and what your experiences were.

 

[Finalygotabeltfed]

I've loaded IMR3031 before and it worked well. I've also used mil surplus 4475 (not available anymore) which a close IMR3031 equivalant.

Depending on how you are dropping your powder, be alert for bridgeing with the stick powders in the narrow mouth of the .223/5.56 casings and work up your loads.

 

[Jamie]

I've been using 28.4 grains of 3031. No issues whatsoever. I weigh every charge due to it being an extruded powder and a tendency to stick in the measure.

 

[SA John]

3031 might be the perfect burn rate for .223. Years ago I burned pounds of it through a Ruger bolt gun in .223. Could easily reach 3200fps with 52 grain bullets with superb accuracy. Using a slightly heavier 55 grain shouldn't be an issue. Just find a manual and start at the bottom.

 

[Dick Manley]

Im using 22.0 gr w/ 55 gr FMJBT. It doesnt meter to well but shoots great.

-DM-