Re: Top Level F T/R Shooters
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: hammerhead</div><div class="ubbcode-body">I have a few quick questions for the top F T/R shooters (eg Darrell, USFTR, Laurie etc).
On average, approx what round count do you personally get from your competition 308s before replacing the barrel?
<span style="color: #000099">I am currently running 155.5's, *very* fast (~3125 fps). This is a hot load by any measure. With this load, I got 5500 rounds on my last barrel before it finally quit (sadly in the middle of a competition). It was a bit of an experiment, to see exactly how far I could push the (stock Savage 1:12 twist heavy barrel) before it had enough.
Ordinarily, I replace after 4000-4500 rounds, generally every year or so.</span>
Is the current trend towards heavier projectiles (208s, 210s) justified or is the recoil/BC trade-off just not producing higher match scores?
<span style="color: #000099">At this point in time, it is a pretty even split between shooters running *fast* 155's and those running heavier bullets. It is simplicity itself to get a good 155 grain load developed, and if they are run fast, it takes a lot to get the heavy bullets to match them. That said, more and more shooters are finding the formula for 185's, 200,s, etc. so there is starting to be a bit of an advantage to running the heavies. The heavies will never have the spectacular accuracy (vertical group) that the 155's do. Their trade-off is in reduced wind drift. for 200 grains and under, it is an extremely level playing field. You get better vertical out of the light bullets, but better wind drift out of the heavies. There is not a clearly defined path as yet.
When you get into the "uber-heavies"; 210+ grain, the difference begins to be more clear. The reduced wind drift becomes more dramatic. The groups are just as bad (or worse) than the other heavies, but the better BC makes up for a lot of failings.
Unfortunately, it is *very* difficult to get the uber-heavies to run in a .308 (no great revelation there). It requires much tinkering, massive amounts of load development, and barrel work. If we keep going down this road, I see that *everyone* that wants to be competitive will need to go this route to one extent or another. This will not be conducive to the "level playing field" that has had people flocking to F-T/R, and I feel that it will hurt the class in the long run. </span> <span style="color: #990000"><span style="font-weight: bold">It is for this reason that I will propose rule changes, both Nationally, and Internationally after next year (not to affect Worlds, it's far too late to change anything associated with Worlds) to cap the F-T/R bullet weight at 201 grains.</span></span> <span style="color: #000099">To be sure, it will pain me personally, as I am able to get the uber-heavies to run well, and fast, but for the overall health of the sport, we should keep things "real" in F-T/R, not turn it into F-Open "lite". (In my opinion)
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Setting team rifle specs aside, how would you personally spec your next F T/R barrel?
<span style="color: #000099">Honestly, right now (if I was running a custom barrel), I would go with a 30" finished length, full taper (~.995-ish) at muzzle, 1:11.25 twist, .299" bore.
The aforementioned length and taper will be a good compromise between making weight, and heavy barrel performance. The 1:11.25 twist will stabilize nicely anything from a 155 grain bullet up to a 200 grain one, giving you the maximum flexibility as regards your future bullet selection </span>
Thanks.
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Hope this helps,
Darrell