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I read both of these threads carefully and couldn't find any support for what you are saying. Would you please quote the exact text you're talking about? My article I referenced was actually about burn rate vs barrel erosion and seemed quite straight forward and what I've been hearing from the benchrest guys (read anal geeks) for quite some time.  $bob$
Many who have freedom have no idea where they got it....
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I never could figure out why the 7mm SAUM wasn't more popular, because it's basically a short .280 Ackley, and allows enough room in a .28" magazine box for really long bullets. It's also very accurate and kills stuff! John, My two favorite cartridges for medium to big game ever since you starting touting the 7SAUM have been the 7SAUM and 300SAUM. I think Remington did such a poor job of marketing the cartridges in comparison to the WSM's and other recent "magnum" offerings and the fact that they quit chambering most of their rifles for them before the public had a chance to really get used to them led to that lack of popularity. My 300SAUM and 7SAUM rifles are scary accurate and light and handy as a 308 carbine. By the way.... I use Varget exclusively in both of mine and the performance and velocity is so outstanding that I simply have never looked further. Long live the SAUM cartridges and I'm certainly glad I stocked up on brass when it was readily available and cheap... $bob$ THIS, +1. 6mmbr.com concurs in their write-up on the 7 SAUM; most efficient case design in a short mag. I just had one cobbled together on a 700 long action.
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Re 6mmbr...which in light of what Charlie Sisk (IIRC) showed with the 300H&H/WSM, would be little more than a caliber comparison within a given case "series", no?
Defend the Constitution
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I don't think the serious long range crowd buys enough rifles to help a new cartridge become a commercial success. (Though the 6.5x284 might disprove my point). And a lot of their rifles wear custom barrels anyway. Some of the case design features such as discussed here are of little interest to hunters who buy lots of rifles. As noted before, Remington backed off on chambering their own stuff for SAUM just as the marketplace was taking a second look. Just seemed like a commercial drag race between SAUM and WSM ...and I suppose RCM. Throw them all against the wall at the same time and see what sticks. The family that gets the most buzz early probably wins out as buyers tilt toward the one that they think will make it long term. The 6.5 SAUM would have been an interesting cartridge to launch commercially against the .270 wsm. Perhaps the world will never know!
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PV=nrT There is a direct relationship between pressure and temperature.
Last edited by RinB; 05/25/14.
“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away”.
Antoine de Saint-Exupery. Posted by Brad.
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Anyone using Retumbo in the 6.5 SAUM? It's close to H1000 in burn rate.
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Retumbo works great in the 6.5 saum. Just a bit slower.
RS
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BG-
Slower as in velocity or burn rate?
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Marlin XL7 action with 26" Mcgowen savage magnum contour barrel with Harrel's brake. Super fun rifle to shoot,fast,accurate, and the cartridge is impressive. No pressure issues and seems to be real easy on brass so far. Load Data: Newest spec. GAP 6.5SAUM 4S reamer. 7mm Rem brass necked down, .291" bushing, and turned to .015" per Pat's instructions. 140 Berger Hybrid H1000 Powder CCI-250 Primer COL @ 2.902" -.018" OTL Shoots .3's to .5's @ 100 yards. Worst group while testing 1 1/4" Speed average for 8 shots is 3142 fps with 12ES. Prior 5 shots: ![[Linked Image]](http://i6.photobucket.com/albums/y212/trailrider121/5c2a69de-b1fe-4929-832d-e4e92d2f4632_zpsdc627783.jpg)
Last edited by trailrider121; 10/03/14.
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Doing some light reading on this fine winters eve and found this.
With the arrival of plenty of factory brass, I wonder how many here now have a 6.5 GAP (SAUM)?
Mule Deer, will we see an article on it this year?
“There are some who can live without wild things and some who cannot.”
ALDO LEOPOLD
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Campfire Kahuna
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Campfire Kahuna
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You never know. I have an action that would work.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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You never know. I have an action that would work. MD : Like a lot of these SA cartridges , they seem to be better suited to the Intermediate Length ( 3-1/8" magazine ), especially in 6.5 caliber. Hope I'm not preaching from the choir, I would love to hear about your experiences enroute, and rationale for the inevitable decisions & compromises. I recall your rationale for going .280AI vice the 7 SAUM had a lot to do with the 2.8" magazine, and not wanting to use an extended box, or DBM .
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Campfire Kahuna
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One interesting thing that's starting to happen is some "short" magazines are getting a little longer. The magazine on my Model 70 .300 WSM, one of the recent models made in Portugal, is the magazine box is 3.05" long.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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I hope I'm playing with one before long. Not that I need it, but I gots to know!
I enjoy handguns and I really like shotguns,...but I love rifles!
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There is talk that sometime next year the 6.5 saum will have some factory offerings!
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This brings to mind an article over on LoadData about the 3" 300WSM. I always wondered if the 3" 7 SAUM in a SA M70 WSM donor wouldn't be truly magnumificent Inquiring minds need Leader/Reader-ship !
Last edited by 338Rules; 01/09/17. Reason: brilliant additional idea
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Campfire Ranger
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And by the way, 6.5 SAUM is not a caliber.
Certainly is not.
By the way, in case you missed it, Jeremiah was a bullfrog.
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This brings to mind an article over on LoadData about the 3" 300WSM. I always wondered if the 3" 7 SAUM in a SA M70 WSM donor wouldn't be truly magnumificent Inquiring minds need Leader/Reader-ship ! For those that prefer a BDL type bottom metal, GA Precision uses a 3" mag box in their 6.5 4S....
“There are some who can live without wild things and some who cannot.”
ALDO LEOPOLD
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Now that George is using the .120 and the .145 throated reamers I think the Defiance XM with a mag length of 3.20 is a better choice for chasing the lands!
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There is talk that sometime next year the 6.5 saum will have some factory offerings! I've seen similar speculations but we'll just have to wait and see. Personally, I imagine if it got traction, the 65KPSI limit would see some of the mystique disolved for this cartridge. Some of these guys are posting velocities in the SAUM that make .264WM guys happy...the only way to do that with a smaller case is redlining the pressure. I suspect it would be similar to the 7mm STW when it was made in factory form...it slowed down a LOT compared to what everyone reported in its wildcat days.
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