I currently use H4350 at 49. grn with a 140 grn Berger VLD Target bullet with a Federal 215M primer in Lapua Brass. I was getting low on powder and my friend said he found some H4350 at a local store, so I had him buy it. Comes to be IMP 4350 instead. Anyone played with this powder and found any accurate loads? Even a starting point would help to work up from there so I can check signs of pressure. Any load data on .223, .300 Blackout, 6.5x284 with various powders is welcome as you never know what powder will be available. I plan on working up a ladder test on each one to find out what works well in my weapons. Thanks.