Well it's been a while, but finally my Alexander Henry build is done and hope to be on the range for some test loads for the Oakridge shoot.Got a Kelly sight yet to mount. To my topic guestions is the barrel had to be breechd twice ,and the time I got finished my barrel length is 31" to the face of the breech blug. Again this is a greenmountain 450/458 ,18 twist barrel. Is this long enough to stabilize the long 530gr.bullet. Any advice on a good shight procedure would be appreciated. Got a room reservation made in Tennessee just incase I can shoot this gun respectively. Thanks.