cdnick Posted December 29, 2010 Report Share Posted December 29, 2010 All,I'm new to forum and this is my first post. I have decided to build a .22-250 on the DPMS platform. I'm having a stainless steel 1:8 bull barrel made and it should be an interesting project. As some who is brand new to the 308 variant of the AR platform I was a little dissapointed in different options to give this gun a unique feel.I will use a DPMS upper (A3 Low Rise), Bolt, BCG, and Lower. The recivers were stripped and completed using DPMS parts kits. I bought a DPMS LR-308 barrel extension (no choice here). I guess I'm looking for help in what I can customize a little. I will use the Magpul PRS stock, and I really wanted to use the SR Gold trigger. The hand guards I want at least a top rail, so i guess that means quad rail, I will get rail covers, but I am having issues finding information on rail heights, I really want it the same hight as my reciever.I have heard alot of talk about the barrel nuts and want more info on that and how they play into the build. are they included with hand guards? how are they installed, I bought a special wrench for them and now just confused. I wanted at least a top rail gas block as that is where the front sight will be. I also was looking for information on BUIS, I want something that can flip up and down but not be in the way with the scope, probably a leupold mark 4 or nightforce, or some day night combo, for hunting 'yotes in the night. Again the flip up fron sight will be on the gas block. The gas system will be a standard legnth. I guess what I am Asking is what I am after going to work? do any of the people on this forum who i am sure are much smarter than me on this, see anything I am after that should change, and of course any other info that will be of help. Will add pics as parts come in and build progresses. Chris. Quote Link to comment Share on other sites More sharing options...
TacBlade Posted December 29, 2010 Report Share Posted December 29, 2010 I have never heard of or seen a 22-250 build on this platform. But, we are here to learn and I would like to see the outcome on your project! Welcome to the forum!! We are always happy to see a new face!! Quote Link to comment Share on other sites More sharing options...
survivalshop Posted December 29, 2010 Report Share Posted December 29, 2010 The newer DPMS uppers rail has been changed & there are few choices of hand guards out there made for them . Try looking at DPMS's own line of FF hand guards , they should line up correctly. I would call or email them ,just to make sure. A rail can be mounted to just about any round FF hand guard , with the proper rail & tools to do it . 22-250 sounds interesting .I see it takes the same shell holder as a 308 for reloading, so a 308 bolt should work as long as it is head spaced correctly.There are a lot of trigger systems out now for 308 AR 's. There is a section on them here some where. Quote Link to comment Share on other sites More sharing options...
imschur Posted November 18, 2011 Report Share Posted November 18, 2011 Any progress on this. I think it's a great idea. Got me thinking..I have a ton of 22-250 ammo on hand Quote Link to comment Share on other sites More sharing options...
cdnick Posted February 9, 2012 Author Report Share Posted February 9, 2012 Trying to figure out how to post pics of the build. I try to attach but apparently not uploading. Can anyone help?Chris Quote Link to comment Share on other sites More sharing options...
98Z5V Posted February 9, 2012 Report Share Posted February 9, 2012 Interesting to see how this worked out - right now, the only platform available for the 22-250 is from Olympic Arms, and they made a special, lengthened AR-15 lower receiver, just to handle the cartridge.As for pics, just email any one of the Admins (myself included) with the pics, and we'll put them up for you. <thumbsup> Quote Link to comment Share on other sites More sharing options...
hobbesgunner Posted February 9, 2012 Report Share Posted February 9, 2012 Try resizing photo...found that pictures taken with my phone are too big..(file size)...I use Photolr PS ap......Photoshop may have same features..... Like to see pictures _and hear some shooting reports on this beast ..I'm all about varmint cartridges ....be a shame to obsolete my Rem 700's Quote Link to comment Share on other sites More sharing options...
rhinegarten Posted February 9, 2012 Report Share Posted February 9, 2012 Wow! That would certainly be different. What were you thinking of using in the way of a magazine? Since the .22-250 is based on the .250 Savage case, it's more than likely dimensionally different (other than the rim size) from any caliber that the AR platform is currently chambered in. I would think that this would present some rather unique feeding issues. Come to think of it, the .250 Savage may not be a bad chambering in the AR in it own right. Quote Link to comment Share on other sites More sharing options...
tlcoy1911 Posted February 9, 2012 Report Share Posted February 9, 2012 The .308 mags work fine, both pmags and the DPMS 10rd I have.I built a 22-250 on the 308 reciever, just finished it about a month ago, and have only sighted it in at 100 and have not had time to shoot it any more.I'm not sure, but isn't a 1-8 twist kind of fast for this round?My bolt gun is a 1-14, and the Rem 700 barrel I used for this is a 1-12 http://i702.photobucket.com/albums/ww26/Tracycoy/IMG_3017.jpghttp://i702.photobucket.com/albums/ww26/Tracycoy/IMG_3016.jpgIf you have a photo server, you can copy the direct link then paste in your message area. ( you need to save pics on your photo server first) Quote Link to comment Share on other sites More sharing options...
Jgun Posted February 9, 2012 Report Share Posted February 9, 2012 Since I'm not knowledgable on this subject, could you guys give a short discription on this rd ? I'm assuming that with the smaller dia bullet it's a flatter shooting rd, but how does it do for range? Does it use the same bullets as .223? Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted February 9, 2012 Report Share Posted February 9, 2012 Jgun, it is a smokin' hot, flat shooting .22 caliber round. Yes, a person may use the same bullets as .223 Rem but there are other options.Those I know that have them say they shoot barrels out fast, 3k-4k rounds. One guy switched from .22-250 to .204 Ruger, because with the bigger round on prarie dogs his barrel was glowing and he had to stop shooting.Jon Quote Link to comment Share on other sites More sharing options...
Jgun Posted February 9, 2012 Report Share Posted February 9, 2012 One of my friends went with .260 Rem over .308 on his bench rest bolt action build. He told me that it was ballistically superier to the 7.62X51, flatter shooting, with longer range. I was considering possibly trying it in an AR, but, I'm thinking it might have the same issue of excellerated wear and short barrel life that you're describing with the .22-250 Quote Link to comment Share on other sites More sharing options...
unforgiven Posted February 9, 2012 Report Share Posted February 9, 2012 Welcome from Indiana brother tlcoy,and brother cdnick thats thinking outside the box brother cdnick thats encouraged here. <thumbsup> Quote Link to comment Share on other sites More sharing options...
Tripledeuce Posted February 10, 2012 Report Share Posted February 10, 2012 My younger brother and I have shot the 22-250 for over 40 years. Rapid bbl wear IS A MYTH!!!!! I built a lot of them befor Remington made it a factory ctg. It wears the bbl no more than any other hotshot 22. For many years, he 40's and 50's it was used extensivly in early bench rest shooting. My current 22-250 has almost 6,000 rds through it, and while it dosen't shot 3/8" groups anymore, it dose shoot 3/4" all day. This "wear the bbl myth" has no basis in fact. Respectfully Terry Quote Link to comment Share on other sites More sharing options...
rhinegarten Posted February 10, 2012 Report Share Posted February 10, 2012 I've never heard of rapid barrel wear in the .22-250. It can be a problem in the .220 Swift. But that round can crack out 50 grainers at 4k fps and maybe slightly higher. It's pretty cool that you can get away with using unmodified .308 mags in the .22-250 AR. A 1 in 8 twist will allow for the stabilization of heavier bullets, something the .22-250 should be quite capable of handling, one would think. Quote Link to comment Share on other sites More sharing options...
hobbesgunner Posted February 10, 2012 Report Share Posted February 10, 2012 1/8 twist is fast for 22-250..... but it will let you shoot heavy bullets ...that and the Swift tend to be loaded with light bullets to get high velocity, which I think is a little overrated..no need to drive'em at 4000 fps....I shoot 55 gr. Nosler ballistic tips and 53 gr. V max's in my Rem 700 Swift and 22-250 varmint rifles. Found them to be more accurate than a 35-45 gr. bullet smoking out the barrel at 4K + .. like to shoot heavy bullets that I load in . 223.. with fast twist barrels... Quote Link to comment Share on other sites More sharing options...
cdnick Posted February 11, 2012 Author Report Share Posted February 11, 2012 ok well here is a pic. I am not a photographer so it kinda sucks sorry. For this build I used a DPMS Lr-308 A3 upper and Lower. I used a DPMS BCG. The Gas system is DPMS and is rifle length. The lower and Upper parts kits were also DPMS. I put a Bill Springfield worked over DPMS trigger in. It is crisp and breaks at 3 lbs. This trigger is rediculous for the price and he was awesome to deal with I highly recomend him. The pistol grip is a Magpul MIAD Modular grip, because i like the different core insert options. The stock is a Magpul PRS. The barrel is a 22" Stainless steel 1:8 RHT twist bull Barrel from Phil Harris at Harris Gunworks. Phil was absolutely fantastic. I say bull barrel because im not sure how else to describe it, it is 1.2" behind the gas block and Heavy. It also has a custom made muzzel break/compensator on it, again made by Phil. I used a JP Enterprise Modular Handgurd Sysytem for the front end. I put a full length rail on the top and a 4" rail at 9. The magazine is a 20 rd Magpul PMAG. I got this because its cheaper than a 10rd DPMS mag. I will pick up some smaller mags in the future. I am using a Harris H series bipod 13"-23".The scope in the Picture is a Pulsar Digisight N550. Im not sure if it will stay on the rifle as I am considering going 22-250 for a day rifle and 204 for my night hunting setup. Thats pretty much my build if you have any questions feel free to ask Quote Link to comment Share on other sites More sharing options...
hobbesgunner Posted February 11, 2012 Report Share Posted February 11, 2012 I like it.!!!! .....No problems cycling??? What are you shooting in it??? Any chronograph or group sizes??? Quote Link to comment Share on other sites More sharing options...
rhinegarten Posted February 12, 2012 Report Share Posted February 12, 2012 Oh sah weeeet! Nice looking piece of machinery! Quote Link to comment Share on other sites More sharing options...
cdnick Posted February 12, 2012 Author Report Share Posted February 12, 2012 more pics Quote Link to comment Share on other sites More sharing options...
rhinegarten Posted February 12, 2012 Report Share Posted February 12, 2012 I'll give you my name and address so that you won't forget me come next Christmas! By then you'll have built two more that are even snazzier and will have gotten tired of this one, so you'll know where to send it. LOLAs far as the mags go, it's a heckuva lot cheaper to buy the Pmag 20 rounder and cut it down to the desired capacity. Somewhere on this forum a member was kind enough to document the process. I did it years ago with a 30 rd plastic Orlite mag to 10 round in the AR15. I'm still using the magazine, it works like a champ. I recently paid almost $60 bucks with P&H for a 4 rounder from DPMS for the LR308. Didn't think of cutting a Pmag as I had done years earlier with the Orlite for the AR15 until someone documented it here. Won't be making that mistake again. Quote Link to comment Share on other sites More sharing options...
cdnick Posted February 16, 2012 Author Report Share Posted February 16, 2012 The gun Shot well enough- I had 1.2" 3 shot group, from prone with out a bench rest and a fixed 4X Sight. I was using Factory Hornaday 40 grain Vmax. This is a light bullet for the 1:8 twist and as I start to roll my own i hope to shrink this down. I could see the target but couldnt make out any definition as far as Xring, 10ring, 9ring, etc. It was just one big black circle. So I think once I put my 3-9 Nikon on it it should be better. "Aim small, Miss Small"The problem I had was that it didnt cycle at all. I believe I may have to Open the gas port a little bit, but any other Ideas you have I would greatly appreciate. Chris Quote Link to comment Share on other sites More sharing options...
survivalshop Posted February 16, 2012 Report Share Posted February 16, 2012 The problem I had was that it didn't cycle at all. I believe I may have to Open the gas port a little bit, but any other Ideas you have I would greatly appreciate. Did it open the bolt , move the BCG back at all ? What BCG are you using ?What buffer & spring are you using ? Running her wet with oil ?Did you assemble the upper ? & I probable have more questions ,but these will work for now . Quote Link to comment Share on other sites More sharing options...
cdnick Posted February 16, 2012 Author Report Share Posted February 16, 2012 The BCG did not open or appear to move. It was night and I was by myself so unsure if that is true. The case didnot eject, and was still in chamber when i when I manually cycled the bolt. It is a DPMS BCGIts a DPMS 308 Buffer AssemblyI have lightly lubed itI did assemble the Upper. Quote Link to comment Share on other sites More sharing options...
rhinegarten Posted February 17, 2012 Report Share Posted February 17, 2012 Almost sounds as if the gas port is nearly closed off, but that's only a guess. Quote Link to comment Share on other sites More sharing options...
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