50, i want to hear more about the 375 version.that's the caliber that will let this thing breath.won't need a Darryl barrel.i know you don't have anything to do right now,hurry up and build a 13#er and let us know about the knock down power.in back of the gun that is! i'll bet with a big baffle style brake, it won't kick "that bad"
Just to chime in on recoil..... its not bad! I have a 14 pound rifle in the 338 snipetac (about the same as Kirby's 338AM) I can shoot it without the brake on, no problems. With the brake on and 300grn bullet at 3400 it recoils no more than a 30-06 or less. The 408c-t with 419gn bullets loaded to 3000fps, has just a bit more recoil. We can shoot it all afternoon long, and it weighs in under 16# scoped. With the Holland style brakes the recoil is dramaticly reduced. I have shot 50cal's in the 30# class, even with good brakes they are nasty! But fun. The 338 and 408 is an excellent choice for long range hunting with mega knock down power. When Wildcat gets his 408 bullets ready, that is when the 408 will be the ultimate long range hunting rifle or dangerous game gun. You can improve the 408 case and get more out of it. I know a guy that blew out the shoulder on his 408, with the 419gn bullets he is getting 3200fps.(with 40" bbl) The 305grn bullet in the 408 is running just over 3500fps. Your right, the 375cal bullet would be great in this case. It was my first choice on necking down the 408 case, but no high BC bullets were avalible so i settled on the 338 bullet. Some are necking it up to 416 to utilized the bullets avalible, but still your limited to low BC bullets. This is fine if your only shooting out to 700 yards. I turned some .416 dia Barnes X bullets down to 408 dia and tested them. The groups were well under a MOA at 100yds, but the drop was like the bullet had a parachute after 700 yards. I shot a 5" dia gong at 100yds, 1.5" thick, the crater was 1" in dia and about 7/8" deep. The gong was sitting on the ground, it went 50 yards tumbling. Mega power! The 338cal in this case will pierce a piece of plate steel 5/8" thick at 700 yards.
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Some are necking it up to 416 to utilized the bullets avalible, but still your limited to low BC bullets. This is fine if your only shooting out to 700 yards. I turned some .416 dia Barnes X bullets down to 408 dia and tested them. The groups were well under a MOA at 100yds, but the drop was like the bullet had a parachute after 700 yards.
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With the new .416 Barrett being released to challenge (outperform, really) the .408 CheyTac, it's only a matter of time until new high-BC bullets are available. Possibly even from Barnes, as I have personally emailed them bringing the .416 Barrett to their attention, and the need for higher-BC'd TSX bullets for that new caliber and also for some of those crazy elk hunters (like myself [img]/ubbthreads/images/graemlins/smirk.gif[/img]) who use the .416 Rigby for LR elk thumping.
Remember that the 416 Barrett is based on a shortened 50 BMG case and as a result requires a BMG class receiver. This makes them MUCH larger and heavier and spendier to build then a 408 based wildcat. Also, the 416 Barrett is listed at a 3300 fps velocity for a 400 gr bullet which for all the extra powder burned is not all that much more then the 408 based rounds and especially an improved 408 wildcat which will burn around 140 gr of powder compared to 200 gr for the Barrett.
Don;t get me wrong, it is a neat round and very high performance but it does have baggage, mainly size and the receivers required to use this round.
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