Wow!!!!! I just received my first shipment of 408 Chey Tac Brass. It makes my 338 Lupa Brass look small. I knew it was a big case, but this is awesome. I can't wait to shoot the 300grn MK out of the 338 Allen Mag. This is going to be some serious fire power. I am going to have an APS 3 Port brake on this rig, but this bad boy is still going to kick pretty good. I have heard the kick, with brake, is about like a 300 Win Mag, does that sound about right. When I go to the range, I hope people have their ear plugs in.
I will not receive my dies until my rifle is completed. Kirby Allen, is builing my 338 Allen Mag, and I am hoping it will be completed by April or sooner. As soon as I get my rig and dies, I will post some pics. You can see some examples of just how large this case is by searching under 338 Allen Mag. There is a posting with different calibers, loaded, next to the (408) 338 Allen Mag.
Left to right: 224 Allen Mag(270 WSM), 257 Allen Xpress(300 Dakota), 6.5mm Allen Xpress(300 Dakota), 270 Allen Xpress(300 Dakota), 257 Allen Magnum(338 RUM), 6.5mm Allen Magnum(338 RUM), 270 Allen Magnum(7mm or 300 RUM), 277 Allen Magnum(338 Lapua), 7mm Allen Mag(338 Lapua) and finally the 338 Allen Mag(408 CheyTac).