Re: 260 vs 6.5x284
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">Can you explain how you're comparing them a little for me? </div></div>
Sure
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">
I understand the barrel lift costs but not the brass life comment. </div></div>
Brass life is significantly shorter when running at such pressure, your beating the piss out of brass, ymmv, but compared to the 6.5x47 or .260, you will go through far more brass, or at least I did.
My 6.5x284 required trimming every 3rd firing, removing brass, not to mention the primer pocket stretch.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">
the primer pockets are still strong and the cases aren't showing head separation signs yet. </div></div>
My milage did vary. I ran a 6.5x284 pushed pretty hard, 3-5 firings and the primer pockets were as wide as shanksters ol' ladies ass. I never did start to show case head seperation, mainly because at 1500 rounds down the pipe, roughly 5 firings on all the brass I had, my barrel was toast, and so was most of the brass.
Mind you, I may have fallen into the category you speak of, I was running H4350 at around 2975 to 3025, and pushing quite hard, I never toyed with RE powders.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">
I guess I'm not understanding how the 350-400fps increase in muzzle velocity I'm getting from the 6.5-06 is negligible compared to the Lapua case. By the time you get to 1200yd though there's a much bigger difference</div></div>
See above. Velocity gains are important in the minds of wild cat enthusiests. What does all that speed gain you? Slightly less drop? So what. Velocity beyond 2850 in 6.5 is wasted because the B.C. is not improved. If you want to shoot farther, o.k., but there are better cartridges for that too.
In an overall Tactical Match rifle, all things must be taken into consideration. Can a 6.5-06 or 6.5x284 run, hell yes, quite well.. but x-rings dont care if it got there at 3000fps or 2850.
However, on timed stages, when recoil and bipod hop come into play all that must be considered too. You might see more cross fires becase of all the recoil, no trace, etc.
Unless your running a 20lb. gun, there is no way to stay on target while cycling the bolt under recoil to keep up, so infact, 3200fps is slower to target.
The un-ending arguement for caliber accuracy will never die. My point, which is the only obvious discussion that has a clear cut aggreable point, is accuracy at the cost of efficencey. There is no comparison to the 6.5x47 in the 6.5 world.
I dont like to get into discussion of velocity arguments over cartridges of the same caliber, because its moot. With higher to extreme velocity comes many disadvantageous qualities, including slower follow up shot, barrel life, the list goes on and on.
If you want a nice cartridge to run 3200 with a decent B.C., run a .243 with 115 DTacs. Thats what I should be doing.