ORIGINAL: cayugad
That's an interesting day you had at the range. Some of the numbers are interesting too. I ran a few of them and even at that speed they show some impressive numbers.
I normally shoot Triple Se7en 3f, Goex 3f, or Swiss 3f with the conicals I use out of my White Ultra Mag and get best results that way. If 70 grains of RS is producing those kind of speeds. I now realize that I have been under guessing the conicals I have been shooting.
My hottest load is 90 grains of Goex 3f and a 460 grain Conical. I get excellent accuracy and I think all the power I would need to hunt anything I want to hunt.
I would think you could slay grizzlies with that load. I'm out of BP and no one locally has it. Insurance concerns/costs I guess. Went to CO Springs today to the Sportmans Warehouse and looked for some there. None. They told me only one place in the Springs would have it (though there is probably more). Drove there but they were closed. But at least I know where I can get some BP without buying a case of it and having it shipped. I have this hunch that I'm going be using BP this fall on my elk hunt.
Doesn't really take alot of powder to kill what your hunting when the bullet is big. One just lets the bullet's weight and momentum do the work. They really ring some energy and momentum from a moderate charge. But it seems I may be a little light on the charge for accuracy purposes. I'll find out more as I stretch the range. I'll go as heavy on the charge as I have to get to 4" - 5" at 100 yards. But I'm hoping I can work with the 1340 fps muzzle velocity scenario. I'm gonna try to call my elk to within 70 yards and make scouting and calling the challenge, not a150 yarddistant shot the challenge.
At some point I would like to post some velocity / charge curves for different projectiles for each of the commonly used powders. They may be useful to some. Like forfinding a ballet load with the same muzzlevelocity as a heavy hunting load for use as a practice load. One which doesn't beat you up and is alot cheaper to practice with. Not that practice with the heavy hunting projectiles isn't necessary. Also, I want to determine real world BC on the projectilesthat I like using data from my chrony. As time goes by, I'll post more on that.
Happy Hunting, Phil