I have a Chapuis UGEX in 9.3x74R. It was taxing my patience trying to get a load to regulate, until I used W760. Neither 4350 powders worked; or a couple others I tried. 64gr of W760 over a LR primer gives me 2320fps with the 285gr Oryx, the 286gr Nos Partition, the Woodleigh SPRN, or the Speer...