Jgun

I don't expect to ever find myself with a rifle chambered for any of those others. I would think that I'll be using my own loads for 300 along with testing some of the factory ammo for comparision when it becomes more redilly available. I don't know if my info is accurate but I had heard that the 300 has a longer neck which makes it possible to load bigger bullets and also to get more velocity compared to the others. Do you know if there's any truth to that?

I like the PRI upper receiver block, it actually is cut so that one side is for the AR-15 and the other has the holes spaced for the AR .308 the only thing I did was make spacers so that the .250 pins provided aren't a loose fit in the . AR.308 uppers .270 ID pivot and takedown pin holes.

I haven't tried it in a match yet but I think that the TR-24 should work pretty well for the matches, at least the ones at my local club. I'm coming to the AR matches by way of the USPSA pistol matches where I use a non magnified red dot on my open gun. The Trijicon has the same type of both eyes open red dot setup for the close in targets, along with a variable magnification to 4X. Hopefully that will be sufficient for my on the long stuff. I presently have an AR-15 with an Eotec XPS red dot that I really like along with a flip to side magnifier mount that I can mount anything from a 3X to a 7X. Since I haven't yet used either in a match I'm really trying to determine which will actually work better for me. I like being able to use the TR-24 without having to physically flip the magnifier back and forth, but I'm not sure yet if the extra magnification possibilities of the flip to side might prove to be something I need to get my hit's on the long targets. I guess I'll probably know better after I try one or the other in my first match.

I forgot to mention, that I'm looking forward to hearing about how the Foster die set works for you. I expect to be ready for the dies myself soon and I was told by redding that thier 300 die sets were about 2-3 months off. They also suggested that thier 300/221 (300 whisper) dies will do the job.

I wasn't really shooting to see what the guns could do accuracywise, We were shooting to 100yds and I would say we were getting fist size groups, offhand and kneeling. With my .308, I was really testing function because this was the first time shooting it since I put it together, It ran very well, the only problem I encountered was with the Jard AR-15 trigger not reliably igniting the Belguim mil ammo I tried. It worked 100% with comercial ammo though. I called Jard and they're sending me a stronger hammer spring that they tell me should cure that. I found the recoil of the .308 to be suprisingly mild, maybe partly due to it being no lightweight, but I think the Battle comp I have mounted also has a lot to do with the low recoil. The 4X scope I have mounted also is not really the best choice if your shooting for groups. My friends 300 was also a lot of fun to shoot, I only shot ten rds or so with it so I didn't really get comfortable with it. I'm really not used to that angled front grip and the beautiful Nightforce 2.5-10X he has on it has a reticle that I'm not familiar with so my hits weren't all that consistant, besides I wasn't really shooting from the bench. His load consisted of a 145 gr FMJ with 16gr of "LiL Gun" powder, which he describes as a general purpose powder. I was really suprised by how mild the recoil was. I have an idea that my gun with the 18" barrel will probably have more of a thump to it. I figure that in order to make PF with a 145 gr bullet, I'll need 2300 FPS. I may have to resort some of the other powder like the N110 to get that.

I just tried out the Jard AR-15 trigger in my .308 AR and just as mentioned above it would not reliably ignite the Belguim mil ammo I tried. It did however, work 100% with the Federal commercial ammo I tried. I was wondering if anyone here would be able to tell me what I could expect if I switched to the weighted .308 hammer? I'd like to be able to run the mil stuff, but really like the light trigger. Is the trigger likely to feel very different if I switch to the .308 hammer? I'd like to hear if anyone has done it, and if so what was your experience?

It finally stopped raining long enough to get to the range today. Tried out my friends 300(bottom) along with my Mega carbine(top). I really like the way the 300 feels. The recoil impulse is not as sharp as the .223's, I can't wait for my barrel to arrive.

Don't know if this is of use to you, but Midway has Lake city brass on sale. I just ordered 1K along with some 145gr bullets. i still need to pick out a powder and order the dies. But I'm heading to the range on Sun to try out my Mega .308 carbine for the first time, and my friend with the 300 is planning to be out there as well,so I'll finally get a chance to try out the 300 AAC cal for myself.

Perhaps my associate has a barrel that is actually 300 fireball. I will have to check with him. All of this is a bit confusing to me because I have never gotten involved with loading one of these less established cartridges before. It certanly makes sense to me to use the dies that are actually designed for the cal vs something "close". Of course sometimes the difference between two wildcat cartridges is mostly in the name. I have never actually seen the actual dimensions of the 300 whisper, 300/221, 300 fireball or the 300AAC BLK so I don't know what the difference is. It sounds to me as though you've done your homework here. I would certainly like to buy the dies once and since I have had no experience using one cal of brass to make cases for another, I'd really like to get this right the first time so as to make this learning experience as enjoyable as possible. I look forward to hearing from you how the loading goes with the new dies. I'd also ask you to list what bullets, cases, powder and OAL you select.

I was led to understand that the Redding dies are superior to the Foster. I'f I understand you correctly, You ordered the Fosters because they are in the middle between the Redding (tighter) and Hornady (looser), is that correct? I will be interested to hear what your opinion is once you try them. My friend (whom I blame for getting me started on this 300 project) started with the Fosters and switched to the Redding die's. I don't know if his problems were caused by his lack of skill or by the dies. I know he's been loading and testing the ammo with the new dies and claims 100% reliability in his Noveske barrel so far. Next chance I get I'll ask him specifically what problem he had with the original dies.

I haven't been building the AR's for all that long so I don't have a large stash of AR parts to draw from. I'm excited about trying this new caliber, because it's got me motivated about load development and other things that I haven't delved into in the past. One of the things that I'm dealing with is that since I don't have many years and many builds to draw experience from, I'm trying to make each one I put together, as versatile as possible. I know that no one gun can do every thing the best but I'd like to build this 300 in such a way that I can shoot it in the local matches AND be able to use it for hunting (if I decide the 300 rd is a suitable choice) I know my Kaiser .308 would be a better hunting gun but if this build comes in substantially lighter, I'd certainly prefer carrying it for a day in the woods. I guess I'll know better once I finish it. I also have heard that the Redding dies are the way to go. I haven't ordered them yet but if I can't get loaded ammo to test my gun out, you can be sure that this will become my priority. I'm still waiting for the load data I was promised by the barrel MFG. Once I have some info in that regard I will be sure to send it your way, just keep in mind that it will all be second hand and I won't be able to guarantee any of it.

I'm still trying to decide on my bolt carrier. The barrel is supposed to come with a fitted bolt so I only need to decide on the actual carrier. Since I originally started this project with the mindset of being able to shoot this against the .308 guys in the matches, a JP low mass bolt carrier sounds like a good choice, but I'm also hearing that this is a good cartridge for hunting inside 200yds. If I used the gun for that purpose I'd probably want the reg bolt carrier. I think I'll wait until I have all the other parts (including barrel) in hand to make that choice. Any idea how soon you may be up and running ? I figure your first hand feedback ought to be valuable to me regarding the bolt carrier choice. By the way, it sounds like your going to have one distinctive looking AR with that NP3 upper and a matching colored handguard. Your going to end up spending so much time answering questions at the range every time you break it out that you won't get much trigger time!

Survivalshop, any more progress on this project to report? Some of the parts for my upper have begun to trickle in and I'm starting to get excited about the chance to finally try out the caliber for myself. By the way have you heard of anyonr that has loaded 300BLK ammo in stock?

A number of my shooting buddies use the FSC556 and swear by it. I'd bet the FSC30 works very well also.

Can anyone tell me what options I have for pre ban high capacity mags for the DPMS .308 rifles? I've been told that the SR-25 mags fit, but have been unable to locate any.

I like the way it looks with the short barrel. can you tell me what length barrel it has in the pictures?

I located the new rifle length gas tube that I knew I had. It will be included with the barrel and gas block when sold.

I'm just jelous because I Still don't have a POF gun.

The MA TEN receivers also use that setup to hold the detent for the rear take down pin. Not sure if I like that set up as much as the AR-15 setup where the detent engages the pin from the back vs coming up from the bottom.

Wait just one minute. Didn't you say that you had to use an upper made in FL in order to help stimulate the economy down there? Unless they moved since the last time I looked, I don't think POF is located in FL, is it?. It is a nice looking upper though.

I WISH I could build a dedicated 300. Unfortunately, I don't have a spare AR-15 lower at the present time and the FFLs here always make it such a pain every time I need to do a transfer. A good deal on a lower doesn't end up being such a good deal by the time I'm done with shipping, FFL fees AND aggravation. I think I'll see how I like the cartridge first and then think about getting a lower for it later.

I look forward to comparing notes with you,once we both have completed uppers (and the weather up here has improved enough to make outdoor shooting enjoyable) I hesitate to suggest an upper because you say you want to use one mfg'd in FL, but I really like the Vltor MUR, and the Rainier billit is supposed to be very good as well, but neither are made in your state. I'm presently trying to pick a comp for my build. I don't see much out there specifically intended for the 300 AAC cartridge, and I don't really think a comp designed for the .308 NATO cartridge is going to be a good choice for my application.

I asked my friend that built the 300 upper, about the ideal barrel twist and he also said as you, that the 1-8 may possibly be more versitile, particularly if you intend to run a can, as he does, but it won't do what I want. I also spoke to the barrel mfg and he told me that the 1-10 would work with bullets up to 208 gr. and that if I was dissatisfied with the performance of the 1-10 he's exchange it for a different twist. With that kind of offer I had no choice but to order one. So I should have an 18" 300 AAC Blackout barrel in a couple of weeks. It will most likely be a while before I'm ready to load for it, but if I can get my hands on some factory 300 AAC ammo I may actually get to try out the 300 before I get to try my .308's

Spoke to the barrel maker tonight. He's advising me to go with a 1-10 twist barrel. He tells me that if I'm loading to try to make 320 power factor, I can do it more safely with the 1-10 twist vs the 1-8 twist because it creates less pressure. He tells me the only downside is that the 1-10 twist won't stabilize subsonic ammo with a suppressor. Since I won't ever be using a suppressor on this barrel, that;s not a problem for me. Any thoughts or opinions on the 1-10 vs the 1-8 (or 1-9) twist?

Good looking barrel. What twist is it, 1/8 ? I'm thinking about calling the guy I've been corrisponding with about the AAC, and maybe ordering an 18" 300 AAC barrel. The only thing I'm not sure of is the blank. He uses Montana Rifleman cut rifled blanks. I looked at their web site but have never heard of them before. Anyone familiar with this barrel manufacturer?