I've had two Brown-Whelens both 23 in. barrels.Wore out the first barrel doing load development and have tried every load combination under the sun including the new wonder powders.Best velocity with 250 gr. Bullets was 2620 fps,this out a Lilja SS tube. The Brown-Whelen is a Gibbs type improved version that theoretically should do better than a standard Whelen,mine obviously hasn't gotten the message.
Just to be specific sir - Have you tried Power Pro 2000-MR? I'm not sure which other powders are the "wonder powder" in the Whelen, but that one is. I get 2650 with the 250 Partition in my 23" barreled 35 WAI almost two grains under Speer's published max for the 250 HotCor in the basic Whelen (which gave them 2700 FPS in the basic Whelen.) And PP Varmint gets me 2975 FPS with the 200 TTSX. These are not hot-rodded, over pressure loads. The first one is actually very gentle on the brass (not so much on my shoulder though, mainly why I stopped at 2650 FPS!) Cheers, Rex
