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Posted: 3/11/2007 1:20:38 PM EDT
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Here is a couple of picture. Sorry, it was the only scope I had that I did not want to pull off one of the other guns and the Lupy has not showed up, yet    
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Wombat The barrel came from Model 1. I have a custom stainless match in the works, but needed something to play with in the mean time. arteacher I bought the Mueller to try them out. Had it on another upper. Have not shot much with it but on higher power the eye relief goes critical. The cross hair posts are heavy. On low power I guess it holds its own. I have not checked the knobs for repeatabiliy, I do think they are a little sticky. |
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That is this barrel? model1sales.com/item-detail.cfm?ID=BCE163&storeid=1&image=bar16300.gif&CFID=17816238&CFTOKEN=80029191 What twist rate is it? Where is the gas port? What threads does it have on the muzzle? Do you have a link to where they are selling that handguard?  |
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It is the barrel under it. 16'' C.A.R. .300 Fireball Chrome Moly Heavy Barrel, 1-8'' twist, 11 degree target crown, no bayonet lug . Carbine gas system, no threads. I threaded it 5/8-24. The one that comes threaded is 1/2-36 and I already had a can for my AR10, so I got the plain barrel and threaded it. Tubes are at Shooters Supply----> www.shooterssupplyusa.com/ They are not on the site, call and ask for Dan. By the way the gas hole, as came with it, is around .122, I have it cycling with subsonics. Heavy bullets and still do not have them cranked up to where I want them. |
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www.quarterbore.net/forums/showthread.php?t=1151 I have not done any serious group shooting as I am still working on loads, but it does show some good groups .75MOA. May do better as I tune some loads and try a little harder and put a good scope on it. As I mentioned earlier, I am also waiting on a stainless match barrel, so right now I am just playing with various loads, just to burn some powder It also does not look too good for shooting this weekend as the river bottom is flooded
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Had to bring this back to the top, I just figured out a good tip for yall. The other day the wife was saying that someone had said that if you rub a fabric softener towel on the Jack Russel before a thunder storm, the lightning and thunder may not bother him as much. Well, I said I doubt it because he trips out a long long time before the storm is near enough to do the static thing. But, On the way home this evening I was planning on loading some more rounds for the 300 fireball and you know how that 1680 powder is about sticking to everything. I decided to wipe the out side of the funnel and the cup on the scale down with a fabric towel.  Hell, it works like a million dollars. So, for all the fine grain and flakey powders, wipe things down, on the out side with a towel and no more sticky grains all over the placeI did try it on the Jack the other day, and no it didn't help at all
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how does the 300 fireball work in a none surpressed barrel setup? shooting both sub and super sonic. ishe peformance any different. i am wanting to know beacuse cans are not really leagle in illinois. its them stupid democrates that passed that one. thanks, brian.
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It works fine. Still quiet with the subs. Actually shooting better with the bare barrel than with the can at this moment. That is why I am still working on some loads and now changing primers. I have been concentrating on the subs up to this point. I have only shot a few supersonics so I cant say much on them yet. I primarily made this set up for shooting subs in a semiauto that functioned, I have plenty of other guns to cover the rest of the issues Kinda reminds me of when I was fishing a lot, had to have a different set up/rod for each type/fish/conditions
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Yes, same can on my AR10 is about one inch shift left and down, on my Savage tactical it is also about an inch. It is a little more on the 300 fireball, but it does not group as good with the can. I need to run a mess more rounds to see what the difference is. I have not played with enough loads to make a judgment call. I think a lot of it has to do with the subsonic range. I am also going to try a different powder if the primer change does not do much. You have to start some where and every gun/barrel is different. ETA: You also get a shift after the first shot with a can, but it is not that much. |
Hubba hubba!! I just messed my shorts a little.  Tell us more about that sweet thing! Please |
Dude, I think I just threw up a little, in my pants.  That is frikkin' awsome!! What kind of loads do you use to get 1050fps in the 9" barrel? |
I use 9.2gr of H110, CCI BR4 primers, Winchester .223 brass formed to 300/221 and 220gr HPBT bullets. |
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If someone is looking to build a 300 whisper, 300 fireball, 300/221 etc. you should check out Quaterbore Forum lots of folks there that have done builds of all sorts of things. |
Got the barrel from Del-Ton, super decent company. The suppressor is a Gemtech TPR-S with bilock, but I think you could use a 9mm can and have a much lighter weapon. The forend is a YHM rifle length tube. The rest is just run of the mill stuff. The one thing I may change, is the gas block. I went with the factory block since I only shoot one load (subsonic) and it functioned fine right away. However, I think I will get an adjustable block to shut off the gas completely. I fired some rounds with a spare block mounted backwards to close off the gas port. Wow it's really quiet, without the action noise. Just a pain to go back and forth from single shot to semi-auto. An Ajustable block solves that. |
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While making up some brass today, I noticed that when forming up to the 308 neck that there is a lot of runout on the case. In other words, when expanding the neck, it deforms the main body of the case some what. While the 125 grn ballistic tips seem to shoot well under sub MOA, I think that the longer subsonic bullets suffer from not getting a good start in the chamber. I would suggest to shoot some full power loads before making up subsonics with new brass. I first noticed this when trimming them to length, before tightening the collet down on the rim, I would let the case spin while putting pressure on the cutter end. I was amazed that there was that much deformation. I did not run an indicator on the case but it was easy to see with the naked eye. I am going to load up some subsonics with once fired (super-sonic) brass and see how much of an improvement there is. ETA: This was going up from 221 fireball cases. |
I found this as well about 5 years ago and I wrote a short dissertation on it including a graphic showing exactly what you are seeing. Simple solution is to form from 223 cases instead. The 23 degree shoulder angle ensures that the cases neck down uniformly. The problem with necking up 221 cases seems to be that there is no support of the case to keep the expander centered in the case. I was planning to devise a series of stepped expanders to do this right in a progressive press, but I never got around to it... |
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I want to pull this back up to let everyone know: While you might be lucky and have your first loads do just what you want, most of these 300/221's are very picky. I do not want anyone to say that if you buy an XYZ barrel you can do this, because, that may not be the case. You are going to have to play with the loads and speeds to get the gun shooting. It is a lot more so with this round than with any other round I have ever loaded for What you are going to end up with is one or two loads in the supersonic that will shoot, and probably only one or two loads of subsonic that will group like you like. I have also deduced that the crown of the barrel on this round is the most critical single element that will make and break a load. If you don't believe me, buy one and come back and say WTF And while it has been fun, I am still notwhere I want to be I still have to pul out my Savage Tactical or AR10 to lob a couple down there just to make sure it is not me when I get through trying loads.ETA: You may not want to get too near the speed of sound to optimize your subsonic load
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Thanks to Model 1 and Mueller optics for getting this back on line. After some fine tuning, I ran it through the paces today. Shot a few supersonics, dialed up to subsonic, shot a few, back down to supersonic. Needless to say, not a problem. ................Mueller tactical is what I am running. While I have US optics, Nightforce and Lupy, for those on a budget, take a look at Muellers tactical. I feel this is a good choice, repeats and dials up and down to the count. Nice and clear. Maybe next they will add illuminated crosshairs For their high end model.ETA: Maybe we can find some hogs down here this evening 
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