I own a .375 Taylor, so here goes.... Dies are available from 4D for $69. With only a 21 inch barrel, you are obviously not looking for max ballistics, so no real advantage to either one there. And, with a 13 inch length of pull, you should not have a problem with eye relief (probably THE reason I like my short action, .300 WSM so much). You are going to get 3 down and one in the pipe with either one, so, again, no advantage. I'm assuming you would have to neck .300 WSM brass up to .375, which is a long way, doable, and will probably lead to thin brass necks. The Taylor MAY be easier to get to feed in a CRF rifle, but my push feed Browning A-Bolt swallows the .300 WSM round like fish down a seal. Soooo, sounds like a toss-up to me. Wanna know why I settled on the Taylor? I had inherited 200 new Remington .338 WM brass and I don't own a .338. I wanted a Thumper, so that's where I went. No regrets.....

MKane160 aka BigDogMK