Hi guys, anyone out there using IMR4350 or H4831 as their powder choice for 300RUM. Our local choice of powders in South Africa doesn't give us much variety. Have been using a local powder B12.7 (equivalent to H870), but been getting huge variances between batch lots. Next possible choices are basically equivalent to above mentioned powders. Want to launch 200gr or 220gr smk's from standard 26" Sendero. Any load data would be appreciated.