Recoil wise, forget the charts! The big McMillan stock does a VERY VERY WONDERFUL job disappating the recoil, and of course the Pachmeyer Declerator pad doesn't hurt either. I have a KDF brake on mine but have shot it without it (to check for accuracy change, which it didn't) and the gun really didn't kick very bad, no more than several other mags I have. BUT the big thunder cartridge DOES produce considerable muzzleclimb without the brake. When fired from bags with the brake off the gun will stand up about 2'. Would make it hard to shoot out of shooting house windows without a brake. Other employees of my brothers also bought the Warbirds and Firebirds and I was the only one with a brake and ALL of them have dinged their guns and scopes while in shooting houses
The fact that the muzzle does rise 2' upon firing is an indication that the balance andstock design does not handle the recoil well at all.My mcmillan stocked 300ultramags do not have experience anywhere near that kind of muzzle rise upon firing yet produce much less felt recoil.
When the standard trg-s rifles were sold here in Canada the price was around $900 Canadian.The30-378 that I fired cost less than $1000 Canadian.