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What Cartridge for F-Open

I wanted to start a CIVIL discussion of a topic that could get out of control. However, I will trust that the shooters here will keep their "feelings" in check.

Most everybody has opinions on what is the best and why. That just means we have been shooting awhile and have developed opinions, hopefully based on solid evidence from shooting. There are a plethora of excellent cartridges out there that can perform at various ranges. What I want to do is break it down to Mid-Range and Long-Range. I am doing this in hopes that a newbie shooter can have his / her questions about cartridges for F-Open sort of all wrapped into a nice little "thread package" rather than constantly asking about this sort of topic all year long. I will start it off by telling what I think, based on my experience.

MID-RANGE (300-600 Yards): I have shot everything from a 6mmBR all the way to a 30-06A.I with varying degrees of success OR lack thereof. I have come down to just a few thoughts. With all the excellent new projectiles out there and the new powders, coupled with Unreal scopes now-a-days and excellent barrels, it almost comes down to "X" count or maybe just ONE (1) point at 500 / 600 yards. ALL rifles, properly tuned and shot by a VERY competent High or High Master shooter, is capable of 600 plus a HIGH "X" count at 600 and under. Therefore, in MY opinion, under the vast majority of shooting conditions, a consistently SUPER ACCURATE rifle is necessary to win in HIGH level competitions at these ranges. This is the place of 6mms and 6.5s! Certainly the 7's can do it. I saw, with my own eyes, Ken Dickerman shoot an unbelievable 1200-77"Xs" (I believe this X count is correct) at the TSRA Mid-Range Championship (600 yards) over a 2 day event! Ken shoots a 7mm. On the other hand I have seen Shawn Broussard and Barry Holcomb only drop 3 points at 600 (2 day / 1200 point event) at Palo Alto in Louisiana, which I believe is THEE TOUGHEST range anywhere! They were shooting 6 Dashers against MANY there with 7s and even 30s!
Over the course of time, say an entire year of shooting, it is MY opinion that the 6s and 6.5s will win over the BIGGER calibers, during the course of a year or so. WHY? Mostly because they can and almost always will, "out X" the 7s. So where is the benefit of a larger cartridge, if in fact I am correct, and "X" count may very well be the deciding factor in most instances?

Long-Range (1000): I have virtually shot the same cartridges at 1000 as I have at Mid-Range. This is where I think HIGH B.C. bullets can and do make a HUGE difference. Here is where the 6.5s, 7s and even the 30s have a distinct advantage over the 6s, even the HIGH performance ones! Having said that, I have come to the conclusion that FOR ME, once I burn out my "straight" .284, I am finished with the BIG cartridges. WHY? I am glad you asked.
I still consider, under MOST circumstances and barrels, that tit-for-tat, over the long-haul, the 6.5s have a greater accuracy edge than the 7s have as a wind defying edge. This is mostly due to the newer 6.5 bullets of GREAT B.C. AND accuracy! The 180 Hybrid is a GREAT wind defying bullet and it's prowess in the accuracy realm is well documented. The same with BOTH the .200-20X and 215 Hybrids in the 30 cal. In my opinion the recoil and torque, over a sustained 25 or so shots, is disconcerting to the point of accuracy degradation and the concurrent loss of points. AND now (jury still out on this one) (too new yet) with the advent of the 6.5-150gr SMK, it almost makes one wonder why do I still want to get pounded all day for 75+ shots with a larger cartridge! For ME, even at 1000, I am changing my tune to at least RE-visit the 6.5s with the newer HIGH B.C. projectiles to see if I can not REALLY be competitive at 1000. I do realize that my "wind-reading" ability, which is less than stellar, could hamper my "experiment" if you will. But one HUGE part of shooting competitively is still having fun! Getting pounded for 2 or more days at a BIG match is NOT my idea of having fun>>win, lose OR draw!

So, I welcome all opinions in the hopes that this topic will induce newbies to make choices based on REAL LIFE shooting experiences. But as I say, opinions can get unruly! Let's NOT allow that unfortunate event to arise!
 
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@ShootDots
Ben, good stuff for sure.
I agree completely with the mid-range information you provided.

I also believe the new 150 SMK and the new Berger 6.5 will be game changers in long range F-class shooting. Mathematically, the 6.5 150 SMK will shoot inside a 284 with 180 hybrids. Several of the local shooters have 7.5 twist barrels ordered and are currently using their 8 twist barrels to test the 150’s with promising results.

I also believe their is some “magic” that has yet to be explained with barrel twist and long for caliber bullets. I say this because I do not see lots of folks winning at long range with the 110-115 gr 6mm bullets. These take a faster twist and have great BC’s, they are made by the same folks making the bullets that are winning high level F-class competitions. So i have to ask, Why?
I think the 300 WSM is the best compromise for ease of tuning/ performance/ great bullets for long range in the wind, however that recoil thing on long strings has to be addressed. I bring this up because one of the guys I shoot with said he is noticing a few folks (great shooters) going back to the 300 WSM. He said it was they just shoot.

Nice job and i agree with what you have written.
CW
 
6.5x284,6.5 Swede ai and your favorite 260ai those three ought to push the 150gr smk pretty good.I will always be a F/tr shooter so for me it’s the 200 20x and 200 hybrid at all ranges.I really like my mouse gun,but at the end of the day my new 308 wins out and as far as recoil goes slap a gooey recoil pad on the back of that mule and you can’t tell you have fired a shot at the end of a match.
 
There are NO "right or wrong" answers. These are based on "personal" opinions. People have a right to shoot what they want! Lord knows I have! LOL! This is primarily a topic to help the newbies make an intelligent decision on where to start.
 
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6.5x284,6.5 Swede ai and your favorite 260ai those three ought to push the 150gr smk pretty good.I will always be a F/tr shooter so for me it’s the 200 20x and 200 hybrid at all ranges.I really like my mouse gun,but at the end of the day my new 308 wins out and as far as recoil goes slap a gooey recoil pad on the back of that mule and you can’t tell you have fired a shot at the end of a match.
Just looking at the numbers, is there any difference between the Swede, 6.5/47 or 260?
CW
 
Just looking at the numbers, is there any difference between the Swede, 6.5/47 or 260?
CW
People with more experience than I can answer that better than I could.The 6.5 x47 probably doesn’t have the boiler room to spit it out as fast as the others.I personally like the x47 it’s one of my favorite calibers.
 
People with more experience than I can answer that better than I could.The 6.5 x47 probably doesn’t have the boiler room to spit it out as fast as the others.I personally like the x47 it’s one of my favorite calibers.
I think it is coming on strong, 6.5 x 47 is a great cartridge.
CW
 
Being new to this sport, I just read as much as I could and for me it is:

6PPC for 100/200 yard Group
30 BR for 100/200 yard Score

6BR for 300 Yards

6.5x47L for 600/800 and 1,000 (but .308 with Lapua Palma Brass for the F class requiring a military round).

I can shoot poorly equally well with them all.

Bob
 
Pick just about any cartridge and with a good barrel which 99% or better will produce super accuracy that can win in the top 10 or 20 or more shooters. The difference is wind calls. The sleek 7 will allow a shooter more errors in wind calls and a medium recoil of perhaps straight 284 is forgiving enough in shoulder holds to still shoot small. The 6.5 has enough slipperiness to slice through the wind and perhaps be a tiny bit more forgiving in shoulder pressure. In these days of 7mm being king and follow the leader forces some that are recoil shy, I think would benefit from a slippery 6.5 shooting in the 2900’s with a slightly less than medium to mild recoil. Perhaps a shooter could benefit from holding errors and fatigue over 2,3 or 4 days of shooting. Pick a cartridge that that is FUN and easy to shoot. And learn to make good wind calls.
 
Interesting discussion and I, too, agree with your thinking on mid-range.

For the group's consideration . . . The long range game seems open to more options, given the powders and the excellent bullets that we have available these days. I'm eagerly awaiting a return to sane temperatures so I can start evaluating the 150 gr. Sierra 6.5 in my 6.5-284. That combination may prove to be a game changer, as ShootDots has said. On the other hand, some of the larger 6mm chamberings can produce some very interesting numbers. For example, a .243 AI can easily achieve 3,300 fps+ with a 105 Hybrid using RL-26. Assuming one can develop a load of sufficient accuracy around this velocity figure, that 6mm 105 actually outperforms a 6.5mm Hybrid at 3,075 fps. A 115 at a modestly lower velocity also produces trajectory and wind drift numbers that are better than the 6.5 140 gr. Hybrid.

The .243 AI is a pussycat on the shoulder in a 15 lb. rifle. The same can be said for the 6mm Rem AI, and the 6 AI will produce even more velocity with today's powders.

Just throwing this out for consideration. I love my .260 AIs and my 6.5-284, but I think I would be making a mistake if I didn't think long and hard about the larger capacity 6mms for F Open. I have a .243 AI rig that happens to shoot the 105 Hybrids extremely well with 48.8 gr. of RL-26 (3,307 fps avg.) and I wouldn't consider myself handicapped at all with this combination at 1,000.

Great times we live in, eh?

Happy New Year!
 
300 to 600
6 Dasher

I have shot 6.5’s and 7mm’s and I like the dasher. The main and biggest reason is because they hold such good elevation. But I have also seen John Meyers clean house with his .284.

1000 yards
.284 or variant of.

I shoot a 300wsm which is awesome at ranges with wind and fast changes. However I can’t shoot 17X’s like a .284 at places like Ben Avery. A 300wsm will agg but not shoot the X’s. A .284 or variant of has won about everything so it’s hard to go against.

The other argument is a 7rsaum. The past and current world champs won with a 7rsaum. Rod correct me if I’m wrong. Nino won Lodi last year with one as well. I have also seen Danny Biggs shoot the world out with his.

Nothing against the 6.5’s and there BC but there is something to be said for a heavier bigger bullet.

KT
 
I think Brian Bowling's run in matches along the Mississippi Valley with a 6mm this past yr shows what a 6 can do at mid range. What was it something like three or four 2-day matches in a row before he dropped a 9.
 
I'd suggest that beginners avoid reinventing the wheel. There is plenty of good, solid knowledge in these forums on how to get a 284 or Dasher to shoot well. Going bigger or faster than what most of us do right now invites problems with recoil control and fatigue. Going smaller (at long range) hasn't worked out to the point of seeing them in the winner's circle.

If reinventing the wheel is your thing, save yourself some money, get a copy of Quickload and do some research on OBT. With those two, you should be able to generally predict the accuracy node velocities for a new bullet or bullet/cartridge combination. Armed with that knowledge, you can re-run your ballistic comparisons to see if your new super-bullet will be worth the barrel life to test and load develop. Point in case: How many are still shooting the 7mm 195 EOL?
 
I think Brian Bowling's run in matches along the Mississippi Valley with a 6mm this past yr shows what a 6 can do at mid range. What was it something like three or four 2-day matches in a row before he dropped a 9.
Wade, don't you believe that it also speaks a lot for the driver too?
 
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People with more experience than I can answer that better than I could.The 6.5 x47 probably doesn’t have the boiler room to spit it out as fast as the others.I personally like the x47 it’s one of my favorite calibers.
I have had four (4) 6.5 x 47s. I love them and they do shoot! I have ZERO arguments against them. However, it is my opinion that a .260A.I. produces the same level of accuracy with an attendant 100-150f.p.s. more velocity. This is about the same overage as replicated in a 6mmBR and 6 Dasher. If (and this may be a BIG "IF") IF a Dasher is "that much better" than a 6mmBR, then the same stands to reason that a .260A.I. is "that much better" than a 6.5 x 47. Logical?
 
I have had four (4) 6.5 x 47s. I love them and they do shoot! I have ZERO arguments against them. However, it is my opinion that a .260A.I. produces the same level of accuracy with an attendant 100-150f.p.s. more velocity. This is about the same overage as replicated in a 6mmBR and 6 Dasher. If (and this may be a BIG "IF") IF a Dasher is "that much better" than a 6mmBR, then the same stands to reason that a .260A.I. is "that much better" than a 6.5 x 47. Logical?
Sir you won’t get no argument out of me on that,because like I said i don’t think the x47 has the boiler room to push a 150gr bullet like the 260A.I. will and if it’s just as accurate as the x47 that’s the route I would take.
 
Has either the 6.5x47 or the 260AI set any national records in any of the long range sports?
CW
 
Has either the 6.5x47 or the 260AI set any national records in any of the long range sports?
CW
None that I know of.. However, there is a caveat in the observation. There is a belief that under no circumstances should you go to a major match "under-gunned". I think that there simply are not enough of them out there competing to make any substantial gains. Give them time, with a growing popularity, and I think that will begin to change.
 
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None that I know of.. However, there is a caveat in the observation. There is a belief that under no circumstances should you go to a major match "under-gunned". I think that there simple are not enough of them out there competing to make any substantial gains. Give them time, with a growing popularity, and I think that will begin to change.
When folks have time to take the new Bergers and Sierra’s “for a walk” i will bet that changes.
CW
 

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