6.5 Saum.
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6.5 Saum.
My barrel is 21" and velocity is 2830fps with 140 Amax. N560 powder.Quote:
Originally Posted by nor-west
So I Googled the 6.5 Saum, looks like all things to all people. Albeit a bit tough on barrels. Very handy chambering indeedQuote:
Originally Posted by Tikka7mm08
Do a bit more googling.... Look at the GAP 4S version and how they run them. H1000 powder at around 53000psi which is 140 class bullets at around 3000+ fps and 130g at 3100-3200. Barrel life 2500 plus for Practical Rifle accuracy...
Sure you can run them at high pressure and you can toast them at 500 rounds, but that may be the wrong approach. I had a 6.5x55AI which didn't complain up to 3200fps with 140s and I ran it at 3050, but pretty sure it wouldn't last more than the 1200 or so rounds that seem typical for the likes of a 6.5x284 running hot like that....
The SAUM offers better performance than that, at less penalty..
So to paraphrase what you are saying Sydney; instead of running your 308 as hot as you can, instead buy a 3006 and run a standard load ?
Yes but no its still a fat and wide case, unlike your 30-06 so a little different.. but in broad terms it is a reduced pressure load in a larger capacity case. H1000 is a slower powder, its ignition pattern is more progressive that is apparently part of the equation as well.
Pressure and heat are apparently what burns out barrels, that and high fire rates. Getting velocity without excess pressure and heat is differcult to achieve in small cases.
I like the idea and the sound of the 6.5 PRC, especially since you can buy factory ammo for it from Hornady. However the only factory rifle I have heard that is arriving chambered in it is the Sauer. Now these are wonderful rifles, just a bit heavy for me.
to those that ai'd the 260 would you do it again? I like my 260 but have to trim every reload at the moment and its getting old. Just started some norma reloads and they havn't stretched at all yet so that may help. did you run them the same COAL?
Don't need to trim my 260AI brass...doesnt really grow. I kinda did do it again by then getting a 280AI. Much easier with factory AI brass.Quote:
Originally Posted by blair993
I didn't go Ackley 40deg, I went 30deg Whitley (short throat). I got the reamer cut and it's done two rifles so far. 260 Imp 30?Quote:
Originally Posted by blair993
I'm still pissing around and about to try different powder but my main load for the last 100+ has been RL17 and 143gr ELDX @2940fps. I'm in the process of fire forming my second hundred Lapua cases and got some slower RL26 to try. I've wrecked about 10 cases with too much pressure on the primer pockets but not stretched them yet.
Well I just did two trips to the range and Superformance is quite underwhelming accuracy wise. One decent group at low pressure then seeing pressure at 47.0 but 1.5 moa isn’t good enough.
R19 at a compressed load was the ok. None showing much in the way of speed either.
Found the same Danny. Superformance didn't do it for me either, got pressure before a decent velocity and accuracy was average.Quote:
Originally Posted by Danny
Have you tried win 760?
It goes good in mine and I have tried everything except RL16
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Yep winny 760 runs well in my boys 260 with 20" barrel.Quote:
Originally Posted by R93
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Anyone tried RL16 with the improved 260?
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Some might be aware that the US military recently picked the 6.5 creedmoor, even though in tests the 260 clearly won out, the simple reason easr of manufacturing 6.5 creed ammo for the semi autos. Anyways back to the 260, been running one for about 7 or 8 years, current rifle is a badger m2013 benchmark barrel. Usually run lapua brass, ccibr2 h4350, running 44.5grains in a 27 inch barrel, 2925 velocity, when I run 140 berger hybrids around 3025. Barrel life on the last 5 or 6 barrels has on average been about 4000, less supressed, but I shot prs so shes run hard. About 2011 I ran a test with superperformance, to be honest, incredible speeds with 139 scenars but accuracy at best was 1/2 moa so I passed. I only wish at times Remington jad put as much effort into the 260 Remington as Hornady did with the creedmoor.
3000fps with 140s in a standard 260?Quote:
Originally Posted by ohearchai
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Ran the above load through Quickload with a 2.950" OALQuote:
Originally Posted by R93
came back as 2913 FPS from a 27" barrel Max Pressure 65968 PSI, Saami spec is 60191 PSI
He must have a strong action and good brass
My 6.5x55 is happy with 147eldm @ 2810 on top of 2209.Quote:
Originally Posted by Tahr
Can't go past .7 BC.
Yeah Litz reckons .617, .315 which is probably a little closer to the mark for the average BCQuote:
Originally Posted by Jit
That's a lot lower than advertised!Quote:
Originally Posted by Kiwi Greg
Is that on the Berger website?
Berger won't be advertising Hornady BCs :)Quote:
Originally Posted by Jit
Sig 2400/Applied Ballistics/program
I need to try some Berger’s next KG, currently at 43.8 of R17 but still not happy with accuracy of the 143.Quote:
Originally Posted by Kiwi Greg
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130s @Danny?
143 eldxQuote:
Originally Posted by Gibo
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What bergers you want to try?Quote:
Originally Posted by Danny
Sorry- doh!Quote:
Originally Posted by Gibo
Anything mate, You have a couple I can buy?
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Yeah 130 bro. can have some. might not get them away for a few days but
Had any joy with the 260 lately @Danny?Quote:
Originally Posted by Danny
On the deer yep [emoji106]Quote:
Originally Posted by Mathias
On targets sort of. Sitting with 143 and accuracy is not as good as it gets and have tried R19, 17 and Superformance. 129 Sierra are excellent and performing well.
Have some new arrivals last week that’s to @superdiver and will try them but if they’re no better than 143 I’ll go Berger 130 or 140 as they’re always excellent accuracy wise in 6.5 calibers I’ve found.
Looking at a new stock soon also probably from @Camwsm.
Bergers worked best for me in 260AI. But I found seating depth to make a big difference...same in my 280AI. Don't give up on a bullet until you have followed Bergers seating depth method.
I have done a bit of work developing loads in my std rem 260. I have settled on 120 Amax at 2990 Fps for hunting loads and 140 ELDM's for targets due to the less wind effect factor.... just guessing but the 140's are probably doing 2750 ish working backwards from Strelok.
The shock factor with the 120's has been great
Attachment 99602
Model 7 18 inch barrel
Attachment 99603
@Mathias and @R93 when burning 760 have you had any ignition issues ? and are you running large or small primers?
Very nice rifle in an excellent caliber.Quote:
Originally Posted by johnd
On reds? I’ve only used 129 Sierra sp and 143 Eldx on reds all excellent. Have a few 120 TTSX to try hopefully this weekend.
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You loading to mag length John?
The 120's are good at mag length but the 140's are single feeders ... another reason to run them over a heavier projo.
I have used it on two reds and a Sika, all one hit wonders. Not a hi score by some standards but I eat real slow:P
Tidy.
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How do you find those amax on deer up close? I load 140 ELDMs for targets and run a different bush load in my 18" 260. Would rather one bullet for everything if I can @johnd
The 120's do good damage, but pass through. after expanding. All my shots have been short range, so the bullet is still motoring along. Two have been the "meat saver" shot just behind the shoulder into the lung / chest cavity. usually blow bits of rib out the far side with a good 1 inch or so exit wound. Last one was a neck / shoulder junction. When I was dressing it out despite cutting at the neck / head junction it came apart where the shot went in. I was expecting more damage into the shoulder area ( jellying etc ) but it was very minimal and on a par with say a .222 on a Fallow for a similar shot.
On a big stag or if hitting more bone results could be less than spectacular i am sure. But the combination is working for me so far.
@superdiver I am running both the 140 and 120 now using Strelok pro the difference is just a couple of clicks away and a shot for verification. You could run the 120's for semi distant targets with no dramas and have the silver bullet :pacman:
Their best advantage is saving case capacity and mag length loading all in one bundle.
Yeah my 140 ELDMs are doing 2775~ so not outrageously quick which I hear is ideal with them esp if my shots are closer. Most of my hunting is bush with the odd tops/slip hunting once or twice a year but do a fair bit of target stuff and shoot a reasonable distance. Will hopefully test them in 2 weeks on some reds. So you reckon avoid bone shots?
Have a read of this @superdiver
https://www.ballisticstudies.com/Kno...ady+A-Max.html
And this
https://www.ballisticstudies.com/Kno...Remington.html
