I've killed several deer with the 139 BTSP out of my 280 at about 2850fps from 15 to 326 yards. I've only recovered this one which took a 135" eight point whitetail that was sneaking away, uphill, 215 yards. It entered between the shoulder blades, destroyed a good ten inches of neck vertebrae and was found at the base of the jaw. Needless to say, he dropped in his tracks. It weighed around 90gr. I think the Interlocks are great bullets.

[Linked Image]

[Linked Image]