Roscoe,
I have no doubt that you have a fine rifle. And likewise I have no doubt that you are rec. wisdom from the crowd. However I feel compelled to comment on one varible that has NOT been mentioned. (Granted, perhaps the brass is too soft/too hard, etc.) BUT...Inasmuch as the caliber is a "slightly" bottle-necked/rimmed cartridge I question the headspacing. I know you said the gun is "on face"...that is NOT the question...IS the rifle "headspaced" correctly.??? The breech end of the bbls. can be fully in contact with the standing breech and still be in a condition of excessive headspace. Since the cart. deminsions reflect a small difference between the neck dia. and the shoulder diameter, I would suspect a head space situation to be the problem. IF you are full length re-sizing the brass with the die too far down against the shell holder, you can...by virtue of physics and math, be creating a "head space problem". I would suggest you shoot the rifle... take the fired brass and try them in the die with it backed off a turn or two...note the shoulder re-placement of the brass as you turn the die down and compare it against the shoulder angle of a fired round. In other words...let the fired shoulder placement be the "headspace" of the brass, VS. taking the die down too far. (I've seen this happen a LOT in .303 Brit. rifles.) Try the rounds as you "take them down" in the rifle...when it action closes with just a "tad" of resistance, you have est. proper and correct headspacing for the round. (OK....if you are headed for Africa...take them down a bit more to ensure quick and solid closing of action.....but sh t......yer in da U S A. NOT Africa.
SP2.