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Ruger American Predator 6.5 Creedmore

This is a discussion on Ruger American Predator 6.5 Creedmore within the Ruger Bolt Action forums, part of the Rifle & Shotgun Forum category; New to the forum and scanned down several pages to see if there were any comments relative to my question before posting this... I have ...


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Old March 16th, 2016, 10:20 AM   #1
 
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Ruger American Predator 6.5 Creedmore

New to the forum and scanned down several pages to see if there were any comments relative to my question before posting this... I have been trying to find a reloading mix to solve a grouping issue with my 6.5. I have tried every version of factory shell, including Superformance, in every weight and style of bullet available and have not been able to group less than 1.75" at 200 yds. I reload and have been trying different mixes there too, best group with 123gr A-max and Varget. Question is for you: Do you feel that the 22" barrel works best with light bullets at a speed over 2900fps (Superformance) or with a heavier bullet at slower speeds like 2700, once again Superformance?



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Old March 16th, 2016, 07:01 PM   #2
 
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I think the 22" 1:8 twist barrel is going to perform better with heavier/longer bullets that the shorter/lighter bullets.
My experience has so far only been at 100 yards but here is my best group and it is .26". That should equate to just over .5" at 200 if I can do my part.
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Old March 17th, 2016, 09:57 AM   #3
 
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I was getting fantastic groups at 100 which is why I was a little disappointed when I started reaching out further. To be honest, I pulled my scope off and re-checked my rail, mounts etc to make sure that something wasn't buggered up. I had trouble finding 6.5 creedmore reloading gear at first but once I was able to find the "special" cartridge for my OAL tool I figured I had the answer to the problem. The last load I came up with is the best by a big margin, but still going to fiddle with the speed a bit. My son has a custom Ruger M77 with 28" stainless barrel, trigger kit and a really nice Vortex scope, shooting 140 grain A-max, 44 gr superformance, and he gets 2" groups all day at 500yds. His OAL is 2.814", jumping about 0.020 into the lands. We loaded some tighter (he has drop plate, no mag) and some looser, out to 0.030, 0.050 etc, but the best was the 0.020. I run out of mag before I can get that close. I loaded up some 140 HPBT with Varget and got fair results, but just at 1 moa still. Good enough for a bargain rifle if I was going to hunt with it.... Just as an FYI, I loaded up some 140s with 45 gr of Superformance and pushed a couple of primers. I also laid out some white cotton cloth a few feet from the end of the barrel to see how much carbon was coming with the slow burning powder, a trick I learned while loading for 338 LM. I don't think I have enough barrel for the slow powder and Varget leaves only a trace. From the replies that I have got in the forum so far, I think I am getting the best out of my rifle that I can considering the equipment. Thanks for the comments!
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Old March 17th, 2016, 01:09 PM   #4
 
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I've checked my chrono records and you may be right about the barrel length.

With Superformance here's what I get for speed 140 gr. SST
44gr. = 2618 fps
44.5 gr. = 2680 fps
44.8 gr. = 2638 fps

I might be wrong but it looks to me like 44.5gr. Is the max and the 44.8 isn't getting a complete burn before the bullet exits the barrel.

I get better groups with 44 gr. And the group really opens up with 44.5 gr. This leads me to believe that even the 44.5 isn't consistently getting a complete burn either.
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Old March 17th, 2016, 01:11 PM   #5
 
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Oh, my O.A.L. is 2.835 and is still .035 off the lands.
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Old March 18th, 2016, 10:22 AM   #6
 
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I did some phoning around yesterday and I found some 120gr A-max. I am going to test my theory on the light, high speed bullet in a short barrel with them. The loading info for the 120 and 123 is identical as far as powder goes so I guess the proof will be on the paper when I get some shooting in. Its too warm up here right now and the mud is biblical. The range gods have put road use bans on now so we have to walk out to set targets. Slogging thru muskeg is not fun and gets the heart rate up enough that you can see it in the scope.. I went thru our chrono records after your last post and was wondering why ours were different with similar loads. Not sure what part of Texas you are in but the humidity and elevation are probably the difference. We shoot at about 3000ft elevation and nearly 0% humidity on good days. I worked around Houston and Beaumont/Port Arthur when I was a younger man. 100 deg F and 100% humidity working near the channel, not good for a fat guy... Thanks again for your insights and experience. Being as the 6.5 Creedmore is a relatively "new" darling in the shooting community there isn't a lot of random info kicking around and it is good to hear from guys who are experimenting too.
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Old March 19th, 2016, 06:20 PM   #7
 
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I went thru our chrono records after your last post and was wondering why ours were different with similar loads. Not sure what part of Texas you are in but the humidity and elevation are probably the difference.

How much difference between mine and yours? Might just be my cheap chrono.
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Old March 20th, 2016, 08:29 AM   #8
 
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I screwed up there.. My loads of 140gr hpbt and 44gr of Superformance were at 2652 to 2661 with 22" barrel. My son's were at 2850 to 2864 with 28" barrel with 140 gr A-max and 44.5gr of Superformance. Not that different after all considering barrels. It was the data from the 123 A-max spread sheet I was looking at when I made that erroneous comment. Averages there are 2949 to 2969 with 123gr A-max and 40gr of Varget. I haven't reloaded any of the SST yet in any weight. Using a Master Chrony that seems to match up with factory speeds pretty close but the data is useless if the operator looks at the wrong stuff
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Old April 18th, 2016, 01:08 PM   #9
 
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Did a bunch of reading on Hornady's site and other reloading websites and decided to try 120 gr A-max in my RAP. Turns out that the little short 6.5 Creedmoor barrel loves the light fast loads! 40 gr of Varget and seating the bullets for a 0.020 jump into the lands gave me 0.6 moa grouping for 5 shots at 300yds. Crono reading was 2995 to 3012 fps over 10 shot total. A bit larger speed deviation than I expected but I'm not using a NASA quality crony either... I shot 140 gr A-max as a control and showed just over a minute grouping at 300yds with an average speed of 2661fps. Thanks again for the comments Bowyer!
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Old April 19th, 2016, 12:30 PM   #10
 
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Trying to upload pics from range. 10 shot 6.5 Creedmoor 120gr Amax group at 100 vs 5 shot 140 gr Amax at 100. And 5 shot group with 120 gr at 300.
Attached Images
File Type: jpg 6.5 Creedmore 120 gr vs 140 gr at 100 yds.JPG (98.8 KB, 51 views)
File Type: jpg 6.5 Creedmoor 120 gr Amax.JPG (100.4 KB, 45 views)
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Old April 19th, 2016, 12:32 PM   #11
 
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Of course, you have to rotate to the right 90 deg.....
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Old April 19th, 2016, 03:35 PM   #12
 
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Thanks for the report Danad! .6 moa at 300? I would say that dog will hunt!
I tried a couple 120 grain loads when I first got this rifle but did not have results anything like yours. I may revisit the lighter bullet after seeing what you have achieved.
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Old April 21st, 2016, 10:16 AM   #13
 
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Rifle would likely shoot better with a younger, slimmer, lower blood pressure pilot as well..... lol. But this looks like the mix for me. Burned up a lot of powder to find something that it likes. Was way easier with the .338 lapua, lots of info for them. We are going to try some different speeds now on my son's Ruger to see if we can get his even more precise. He is getting 2-3" groups at 500 meters with his 28" stainless 6.5 Creedmoor Ruger Predator but we suspect that there are some barrel harmonics at work there. He shoots 140 gr Amax with 44.5 gr of Superformance at speeds in the low 2900s and hits the 8" plate at 1000 meters pretty regularly, so not too bad for a little round. I bought some 140 gr HPBTs to try, maybe getting rid of the plastic will help.
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Old April 24th, 2016, 09:47 AM   #14
 
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You might want to check for barrel clearance. I run 130gr hpbt and 140gr amax/eldm factory and reloads and they perform excellent.
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Old June 16th, 2016, 04:29 PM   #15
 
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Hey Danad, you still around?
I went to the range today with some 120gr. Amax. Using IMR 4350 here are a couple groups at 100 yards.


I had a few groups that weren't worth showing but this is my best with the 120's.
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