chas442
Member
I plan on fireforming 7.62x39 into 6. grendel. I know this is not optimal but gonna do it anyway. I have 123 gr. projectiles and plan on using IMR 4895 for fireforming. I already have resized the 7.62x39 brass. I would like to know how much powder is needed to fully fireform. I have fireformed 12 pieces already with 20 grains of IMR 4895 and it appears to have done the job. Ihave no aversions from using pistol powders I would prefer to use the least amount as this is a wasteful operation.
Any help would be greatly appreciated
TIA
Any help would be greatly appreciated
TIA