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Campfire Tracker
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Dave and Jim,
You guys got some awesome groups there. Me, I'm only about a 1/2 MOA shooter. If I do better, it's typically by accident. Both my -47's shoot better than me.
DC,
What powder are you using in your -55? I noticed that when powder charges were similar, the speeds went faster with 1st the PT then the VLD being the fastest; shorter bearing surface. Pressure were higher with the AB then the PT with the VLD the best.
Alan
Last edited by GSSP; 01/05/12.
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Joined: Mar 2005
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Campfire Ranger
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Campfire Ranger
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With the 140s and 130s I was using H4831. I am going off memory, but I think I am using R15 with the 100's. (don't have my notes handy)
(130 Accubonds, 140VLDs)
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Campfire Ranger
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Campfire Ranger
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Have to go and find my notes but my Dads Swede was right in around 2700 with a 140 Sie and H4350.
2900 is 6.5/06 range IME
Dober
"True respect starts with the way you treat others, and it is earned over a lifetime of demonstrating kindness, honor and dignity"....Tony Dungy
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Campfire Tracker
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Are you guys going off 6.5x55 reloading data or letting your "rifle" tell you when to stop?
Except a bit of Ramshot or VV 6.5x47 data their is NO other printed data out there. Just internet stuff. So, we -47 shooters have to listen/watch to see what our rifles tell us.
Alan
Last edited by GSSP; 01/05/12.
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Joined: Apr 2001
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Campfire Ranger
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Campfire Ranger
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Letting the rifle tell me when to stop is my way, books will give a very good guideline though.
Dober
"True respect starts with the way you treat others, and it is earned over a lifetime of demonstrating kindness, honor and dignity"....Tony Dungy
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Campfire Ranger
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Campfire Ranger
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Unless you have actual pressure testing equipment, one can only guess what the pressure is doing.
I think anyone getting 2900fps out of a 6.5x47 with a 140 is waiting for a kaboom. Those are 6.5-284 speeds. From Hodgdon:
140 GR. SPR GS-SP Hodgdon H1000 .264" 2.910" 49.0 2503 53.5C 2694
140 GR. SPR GS-SP IMR IMR 7828 SSC .264" 2.910" 45.0 2462 50.5 2718
140 GR. SPR GS-SP Winchester Supreme 780 .264" 2.910" 48.6 2606 51.7 2797
140 GR. SPR GS-SP Hodgdon H4831 .264" 2.910" 45.0 2520 49.5 2722
140 GR. SPR GS-SP Hodgdon Hybrid 100V .264" 2.910" 45.0 2696 49.0 2895
140 GR. SPR GS-SP IMR IMR 4831 .264" 2.910" 43.0 2536 47.8 2762
140 GR. SPR GS-SP Hodgdon H4350 .264" 2.910" 42.0 2548 45.5 2720
140 GR. SPR GS-SP IMR IMR 4350 .264" 2.910" 42.0 2539 46.8 2753
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Campfire Tracker
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I like a 1-8", or 1-8.5" for the 140's. You will have problems with stabilization in sub-zero temps with 140gr bullets with a 1-9". I'm not throwing out a guess, I've seen it. A 1-9" will champion the 130's like a dream in any temperature or elevation. Thats the bullet I like in .264" for cases the size of 6.5 Lapua, .260 and 6.5X55.
Luck....is the residue of design... ![[Linked Image]](http://i423.photobucket.com/albums/pp311/patrickgsinclair/96zvyt.gif)
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Campfire Ranger
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Campfire Ranger
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My Swede is an 8, and it cranks out the 156 Lapua Megas fine too. They are lobbing pretty good though, haha
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Campfire Outfitter
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Campfire Outfitter
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So I have been in correspondence with a very well known smith about a 6.5 build. I'm not a novice around reloading, ballistics or competition shooting.. but for the life of me I cannot figure out how they are doing this...
am I missing something?
Lapua Brass, small primer pocket, modern custom action, high pressures. We're conditioned to think anything above 65K is a no-no, but virtually all the benchrest guys are running a lot more than that every day. Is it safe? Sure, if you have the right equipment.
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Campfire 'Bwana
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Campfire 'Bwana
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Guys why the 6.5x47 instead of something like the Creedmoor? Is there a difference?
Last edited by BobinNH; 01/05/12.
The 280 Remington is overbore.
The 7 Rem Mag is over bore.
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Campfire Outfitter
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Campfire Outfitter
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I don't have either so I'm no expert, but I am thinking real hard about building a 6.5L. I think the Lapua brass with small primers has a lot to do with guys preferring it. I don't think the importance of being able to get that brass can be overstated.
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The 260, 6.5X47 and the Cm are very close in many ways. IMHO it comes down to user preference.
Personally I'm bouncing back and forth between the 260 and 47L
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Yes Bob.
Its the Lapua brass.
dave
![[Linked Image]](https://upload.wikimedia.org/wikipedia/commons/e/ea/Logo_Schmidt_%26_Bender.jpg) Only accurate rifles are interesting.
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Guys why the 6.5x47 instead of something like the Creedmoor? Is there a difference? Large rifle primer in the 6.5 Creedmoor and .260 Remington, small rifle primer in the 47L. FWIW, Lapua makes .260 Remington brass...
Luck....is the residue of design...
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IMHO, the small primer pocket really makes a difference how the round stands up to pressure.
Alan
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Campfire Outfitter
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Unless you have actual pressure testing equipment, one can only guess what the pressure is doing.
I think anyone getting 2900fps out of a 6.5x47 with a 140 is waiting for a kaboom. Those are 6.5-284 speeds. From Hodgdon:
140 GR. SPR GS-SP Hodgdon H1000 .264" 2.910" 49.0 2503 53.5C 2694
140 GR. SPR GS-SP IMR IMR 7828 SSC .264" 2.910" 45.0 2462 50.5 2718
140 GR. SPR GS-SP Winchester Supreme 780 .264" 2.910" 48.6 2606 51.7 2797
140 GR. SPR GS-SP Hodgdon H4831 .264" 2.910" 45.0 2520 49.5 2722
140 GR. SPR GS-SP Hodgdon Hybrid 100V .264" 2.910" 45.0 2696 49.0 2895
140 GR. SPR GS-SP IMR IMR 4831 .264" 2.910" 43.0 2536 47.8 2762
140 GR. SPR GS-SP Hodgdon H4350 .264" 2.910" 42.0 2548 45.5 2720
140 GR. SPR GS-SP IMR IMR 4350 .264" 2.910" 42.0 2539 46.8 2753 You are correct, I get 3000 fps with 130s using 50.5 grains of R17. I am using Lapua brass. If you are getting those velocities out of a 6.5x47 you are certainly dancing with 75,000 psi. BR shooters do it all the time. They have extremely tight tolerances on everything- doesn't mean it's safe. I can't get 2900 with a 260 AI using R17. Are they doing it? I won't say they aren't but their pressures are way over the top. You are testing the yield strength of the action. If you want those velocities, use a 6.5-284.
NRA Benefactor Member
Those who live by the sword get shot by those who don't.
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Trying to learn here. Do the small rifle primers have thicker stronger cups than large rifle size primers in general?
I would think that the primers would be the weakest part of the system. Are certain primers brands more suitable than others for these high pressur cartridges?
I understand that the smaller hole for the primer on the 6.5x47L would make the case stronger versus the other cases.
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Smaller area of the small primer leaves more supporting brass in the case as well.
I run the 450 CCI and other than one bad lot, have never had an issue. I've fired 5000 or so rounds out of my 6.5X47 Lapua's.
I tend to run the lighter bullets. Mostly the 123 MK's and A-Max's.Getting 2975 or so out of a 25" 8 twist Rock.
The 129 SST's I hunt with get right at 2900.
I do not hot rod as I need the rifle to function both in matches and hunting.
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Thanks for the explaination. Those 123-130s bullets at the speed you are getting should do for just about anything.
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