7mm WSM AR-10
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Re: 7mm WSM AR-10
awesome... expensive but awesome. go for it. however i believe a 6 or 6.5 mm build would be more efficient in the ar system.
awesome... expensive but awesome. go for it. however i believe a 6 or 6.5 mm build would be more efficient in the ar system.
Re: 7mm WSM AR-10
I had a DPMS in 300WSM, it was ok, I prefer it in a bolt gun, pretty heavy recoil and not as accurate as a bolt gun would of been.
I had a DPMS in 300WSM, it was ok, I prefer it in a bolt gun, pretty heavy recoil and not as accurate as a bolt gun would of been.
Re: 7mm WSM AR-10
Did a 300 WSM, wouldn't do it again.
7 WSM you'll have even higher port pressure and more gas volume as you'll most likely be running touch more of a slower burning powder.
Can it be done, yes.
Would I recommend it, no.
If you want a 7mm in an AR, I'd go 7-08 or 7 Creedmoor. Short Action Customs is doing a 7 Creedmoor and for AR platform would be about ideal from a port pressure and gas volume standpoint.
Mag bolt for an AR, while out there isn't all that common.
Magazines don't feed the WSM all that well, SAUM would be better choice.
Did a 300 WSM, wouldn't do it again.
7 WSM you'll have even higher port pressure and more gas volume as you'll most likely be running touch more of a slower burning powder.
Can it be done, yes.
Would I recommend it, no.
If you want a 7mm in an AR, I'd go 7-08 or 7 Creedmoor. Short Action Customs is doing a 7 Creedmoor and for AR platform would be about ideal from a port pressure and gas volume standpoint.
Mag bolt for an AR, while out there isn't all that common.
Magazines don't feed the WSM all that well, SAUM would be better choice.
Re: 7mm WSM AR-10
Mccourt,
I am very interested in this thread. I have been trying to decide between a 300wsm vs a 300rsaum. I am also trying to decide between an ASI bult platform vs an Armalite factory solution.
Let me know what you think...
BTW, i will only shoot these cartridges in an AR platform a bolt platform is a non-starter.
Mccourt,
I am very interested in this thread. I have been trying to decide between a 300wsm vs a 300rsaum. I am also trying to decide between an ASI bult platform vs an Armalite factory solution.
Let me know what you think...
BTW, i will only shoot these cartridges in an AR platform a bolt platform is a non-starter.
Re: 7mm WSM AR-10
I'd go SAUM over WSM.
Less body taper, bit less capacity, longer neck, and just an overall better fit IMHO.
Looks to me like ASI offers an extended length gas system for their SAUM. Unless Armalite is offering an extended system, I'd go ASI to help get port pressure down and delay unlocking a bit.
HTH
I'd go SAUM over WSM.
Less body taper, bit less capacity, longer neck, and just an overall better fit IMHO.
Looks to me like ASI offers an extended length gas system for their SAUM. Unless Armalite is offering an extended system, I'd go ASI to help get port pressure down and delay unlocking a bit.
HTH
Re: 7mm WSM AR-10
Mccourt,
You sir are badass...simple, concise answers germain to the question at hand...this is what all responses should be like.
I'll call ASI and ask about their gas system. I was under the impression that armalite used an extended gas system, perhaps they just use a longer gas tube.
Assuming a regular rifle length gas system, would an adjustable gas block mitigate the high port pressure enough to noticiably impact the high recoil?
Mccourt,
You sir are badass...simple, concise answers germain to the question at hand...this is what all responses should be like.
I'll call ASI and ask about their gas system. I was under the impression that armalite used an extended gas system, perhaps they just use a longer gas tube.
Assuming a regular rifle length gas system, would an adjustable gas block mitigate the high port pressure enough to noticiably impact the high recoil?
Re: 7mm WSM AR-10
TX
Thank you!
I did a quick look at Armalite site, I don't see a WSM or SAUM offered currently. Know they did offer a short mag at one time.
What I've found is that with higher port pressure, increased gas volume and standard length gas system is that the brass gets trashed. Raises a huge burr on case head. If you turn gas down enough to prevent burr, rifle doesn't cycle.
I don't really notice much difference in felt recoil, do see brass lasting longer. LOL
Running a step faster burn rate then you would in a bolt gun does help reduce port pressure, reduce gas volume, and reduce the burr on case head.
nomore606
300 RCM is really close to a WSM. I'll try to get picture up of WSM, RCM, and SAUM side by side. SAUM is hands down the best fit to a large frame AR platform IMHO.
TX
Thank you!
I did a quick look at Armalite site, I don't see a WSM or SAUM offered currently. Know they did offer a short mag at one time.
What I've found is that with higher port pressure, increased gas volume and standard length gas system is that the brass gets trashed. Raises a huge burr on case head. If you turn gas down enough to prevent burr, rifle doesn't cycle.
I don't really notice much difference in felt recoil, do see brass lasting longer. LOL
Running a step faster burn rate then you would in a bolt gun does help reduce port pressure, reduce gas volume, and reduce the burr on case head.
nomore606
300 RCM is really close to a WSM. I'll try to get picture up of WSM, RCM, and SAUM side by side. SAUM is hands down the best fit to a large frame AR platform IMHO.
Re: 7mm WSM AR-10
I also think the 7 saum would be a better fit in an ar chassis. I spent a lot of time measuring bullets and case lengths and found that the saum would fit in an ar magazine better without jamming the high BC bullets to far into the case. That being said the magnum bolts are now very hard to find and the extractors are even harder. I almost started building one but decided against it because of this problem. I could be wrong but I was told by a few smiths that the extractors are the biggest problem with a magnum ar they break during operation because of the larger cartridge base. You either have to have a lot of spares on hand which are expensive or have one custom made to fit. Again I could be wrong but I didn't want to build an upper that would keep breaking such a high dollar piece. If you do build one or if anyone has experience with one I would like to hear about it because I also think a 7 short mag would make a great LR ar upper.
I also think the 7 saum would be a better fit in an ar chassis. I spent a lot of time measuring bullets and case lengths and found that the saum would fit in an ar magazine better without jamming the high BC bullets to far into the case. That being said the magnum bolts are now very hard to find and the extractors are even harder. I almost started building one but decided against it because of this problem. I could be wrong but I was told by a few smiths that the extractors are the biggest problem with a magnum ar they break during operation because of the larger cartridge base. You either have to have a lot of spares on hand which are expensive or have one custom made to fit. Again I could be wrong but I didn't want to build an upper that would keep breaking such a high dollar piece. If you do build one or if anyone has experience with one I would like to hear about it because I also think a 7 short mag would make a great LR ar upper.
Re: 7mm WSM AR-10
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: McCourt Munitions LLC</div><div class="ubbcode-body">SAUM is hands down the best fit to a large frame AR platform IMHO. </div></div>100% agree.
The issues laid out here so far are true. Bolts are hard to come by now days and extractors are even harder. I was contemplating a 7mm SAUM last year about this time and did LOTS of research. Eventually, I found it easier to just buy a used 300SAUM upper and if it didn't shoot the way I wanted...I would rebarrel to 7mmSAUM.
Got an Armalite 300 SAUM on gunbroker and "modifed" my own way.
The gas pressure and recoil are also notable concerns but I wouldn't call them issues. Armalites gas system is about 1/4" longer than a standard .308 rifle length gas system, but since I shoot suppressed...I utilized a PRI Adjustable gas block and I have it COMPLETELY CLOSED and I still get enough gas to cycle and recoil is VERY minimal.
In fact, I had read that the recoil would be a substantial increase, so to test things...I backed out the gas adjustment screw about 1 turn and fired again. A serious shock to my system as the recoil was 2-3x harder and sharper. Much more than I expected.
I know of one manufacturer that is producing 7mm WSM AR10s but they aren't out yet and I told them I wouldn't mention until they do.
ALSO, Accuracy Systems does builds on the WSM or SAUM platform and they could do a 7mm for you, but they won't sell raw parts. No bolt or extractor without a complete upper build. If you go with them, I know you'll be happy with the accuracy. They did my .243WSSM.
Whatever direction you decide to go, I would suggest an adjustable gas block. It will take care of the recoil AND the issue with gas system length.
ALSO, I can't speak for PMAGs or other DPMS/KAC mags...but Armalite Gen II mags feed SAUM ammo just fine in my Armalite 300SAUM.
I assume SAUM rounds will function equally well with others, but I'm not 100% on that one.
Here's how she ended up looking.
Here was a group last weekend at 1150 yds with 210 Bergers. I was trying to get a 5 shot group, but with the wind, I had to walk it into the target. First shot was low and left about 2'. Second shot was 18" right and 6" low but I didn't mess with elevation.
Last 3 shots were right on the money.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: McCourt Munitions LLC</div><div class="ubbcode-body">SAUM is hands down the best fit to a large frame AR platform IMHO. </div></div>100% agree.
The issues laid out here so far are true. Bolts are hard to come by now days and extractors are even harder. I was contemplating a 7mm SAUM last year about this time and did LOTS of research. Eventually, I found it easier to just buy a used 300SAUM upper and if it didn't shoot the way I wanted...I would rebarrel to 7mmSAUM.
Got an Armalite 300 SAUM on gunbroker and "modifed" my own way.
The gas pressure and recoil are also notable concerns but I wouldn't call them issues. Armalites gas system is about 1/4" longer than a standard .308 rifle length gas system, but since I shoot suppressed...I utilized a PRI Adjustable gas block and I have it COMPLETELY CLOSED and I still get enough gas to cycle and recoil is VERY minimal.
In fact, I had read that the recoil would be a substantial increase, so to test things...I backed out the gas adjustment screw about 1 turn and fired again. A serious shock to my system as the recoil was 2-3x harder and sharper. Much more than I expected.
I know of one manufacturer that is producing 7mm WSM AR10s but they aren't out yet and I told them I wouldn't mention until they do.
ALSO, Accuracy Systems does builds on the WSM or SAUM platform and they could do a 7mm for you, but they won't sell raw parts. No bolt or extractor without a complete upper build. If you go with them, I know you'll be happy with the accuracy. They did my .243WSSM.
Whatever direction you decide to go, I would suggest an adjustable gas block. It will take care of the recoil AND the issue with gas system length.
ALSO, I can't speak for PMAGs or other DPMS/KAC mags...but Armalite Gen II mags feed SAUM ammo just fine in my Armalite 300SAUM.
I assume SAUM rounds will function equally well with others, but I'm not 100% on that one.
Here's how she ended up looking.
Here was a group last weekend at 1150 yds with 210 Bergers. I was trying to get a 5 shot group, but with the wind, I had to walk it into the target. First shot was low and left about 2'. Second shot was 18" right and 6" low but I didn't mess with elevation.
Last 3 shots were right on the money.
Re: 7mm WSM AR-10
that is a great looking rifle and some great shooting, i thought dpms had a 300 saum out a while back,
that is a great looking rifle and some great shooting, i thought dpms had a 300 saum out a while back,
