Quote:
Originally Posted by Cowtown guy
Barnes recommends 2000fps
|
Nope, just got off the horn Barnes reps say with the 139, it will open completely at 1300 and partially at lower velocities. The higher weights are for losses lead has, but with copper, the LRX retains 100% of the weight. The 139LRX was designed specifically for the 7mm Rem Mag. It has been tested for Deer, Moose, and Elk out to 1,000 yards. Either whether I go with the 7 or 300 rum, the extra barrel length of 27.5" will give me around 250-300 fps greater than the load data at 24".
calculating.... using Nosler load data, and 68 grains of r-22 complete burn @27.5". the velocity will then be 3540+. at 1000 yards it will be 1708 fps, or 400fps more than rated.
what I have learned in this exercise, the old ways of thinking do not apply anymore, with the new weight retention, heavy bullets are not needed, and speed really does kill. We need to re-examine how we reload....
I am leaning heavily toward the 7mm Rem Mag, because I'm used to it and the 300 RUM kick is probably a bit much for this lazy ass.