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Everything posted by 98Z5V
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Timing, brother, timing. It's all about the location of the gas port that's drilled in the barrel, and how much barrel remains after that gas port (drilled hole). Until that bullet leaves the end of the barrel, it's holding in the gasses that cycle the weapon. The important thing is the location of the gas port and barrel length remaining after it (dwell time). Example - if you had an 18" barrel and a pistol-length gas system, that gun would kick the hell out of you. That same barrel with a carbine gas system is going to kick less than the pistol gas setup, but it's still going to beat the hell out of you (and the gun). Same barrel with rifle gas - that's going to be the softest recoiling of all the available combinations. Gas port SIZE makes all the difference in the world here - how much gas can pass through that hole - but most of these are pretty much set for the length of the gas system. Lots of people used to say you couldn't have a 16" barrel with rifle gas - and Fulton Armory made one. The nay-sayers thought it didn't have enough distance between the gas port and end of the barrel - not enough dwell time to cycle the weapon. Wrong - and it works really, really well. survivalshop (member here) has one. He'll probably be in here with more info.
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;D You're getting in deeeeep, brother... <laughs>
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Rifle length gas, for both those barrel lengths. <thumbsup>
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Well, the 14.5" ARF billet gun was doing well, with the H3 buffer and the S3G trigger. Started at the low ready, chambered and on safe, and set the delay on the timer. I was getting an average of 1.15 seconds to 1.20 seconds for two shots on target. The lowest time was 1.08 or maybe even 1.07 seconds. High times were in the mid 1.20s. When I went to the Spike's billet gun, it's the one with all the added cyclic weight. It's also sporting the Spike's nickel boron coated Battle Trigger - alot heavier than the S3G trigger, for sure. This gun is also two pounds heavier than the 14.5" gun. Times on this one were averaging in the mi 1.20s, with high times almost at 1.40 seconds. I think the lowest time was around 1.15 seconds. Here's some payback for Robo - These were all sighted on the head, instead of centermass torso. I took care of this guy for you, Robo. <thumbsup> Here are the targets: Here's a bonus for everyone that stuck through the vids - this girl can shoot, but she got caught up on this run due to a bad mag, and bolt overrides.
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Alright, Robo - I wore out that guy on the right for ya. <thumbsup> He got some "special treatment." <laughs> I'm working on uploading the vids right now, and once that's done I'll be back in here for some enlightening info. Let's just say that the heavy cyclic rate isn't affecting the gun at all, as far as doubles go. It's just as effective as other guns and configs. <thumbsup>
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Free float firing pin in the RRA, right? That's what does that. You can search for any companies that might make a titanium firing pin for the RRA guns - the lighter pin wouldn't have such an effect on the primers, and it wouldn't hurt functioning in any other way.
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He'll know for sure that this is from you... <thumbsup> <laughs>
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I'm not scheduled to work tomorrow, so if I'm not called in - these two guys are gonna get it. In the interest of speed, I'll take this rifle out and compare it to the 14.5" ARF billet build with the S3G trigger and the H3 buffer, and see how it stacks up with this super heavy buffer/BCG combo. Last weekend, in the riverbed shooting pit, I stuck a target out there about 75~80 yards, sat back against the truck tire, and used my knees for arm/rifle support. Kinda comfortable, sitting in the shade for the first time that day. ;D This was 10-rds of Prvi Partizan 69gr HPBT Match, through this gun. That PEPR mount and scope have been off and on this gun at least a dozen times, too. It's still doing it's job. <thumbsup>
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I don't usually shoot this one fast, but I'll take it out and do so, just to see how it reacts. The action of BCG cycling happens so fast anyway, that I doubt it will make a difference in semi-auto firing. I'll find out though - I can get the rounds out fast on the other guns, so I'll see what this one does now. Yes, I pull both pins to take it apart now. Absolutely! <thumbsup> Jgun, here's the build thread on it, with more pics. I can get more pics if you'd like, besides those - just let me know what angle, etc. http://308ar.com/forum/black-rifles/isn't-this-how-it-always-starts/
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Now, this isn't a "hard cycling" gun. I really didn't need the recoil reduction properties of the CWS for this, but simply the additional 0.080" that the CWS adds to the length of the BCG, when installed - I needed that to keep from furthering the slight damage on the buffer face. I went to the range, and installed the CWS shell, only. With a 16" midlength barrel, it was already a nice, soft recoil, and it's rocking a T2 heavier buffer, so I just wanted to make sure it cycled fine - it was great. I figured, Hmmm... let's toss in that steel insert, and see how it does with the PMC Bronze 55gr blasting ammo - steel insert was a success, and it also changed an already light recoil a little more. <thumbsup> You know what was next. <laughs> Out with the steel insert, and in with the tungsten insert - this thing isn't going to run on mildly loaded PMC Bronze, a CWS with heavy insert, and a T2 buffer... Wrong. The thing recoiled like my 10/22. I was shocked that it even ran. As a rundown, here's a list of weights of possible components that you could combine, based on available (non-custom) buffers, and the CWS: Carbine buffer = 3.0 oz (carbine) H1 buffer = 3.8 oz (carbine) H2 buffer = 4.6 oz (carbine) H3 buffer = 5.4 oz (carbine) HSS buffer = 6.5 oz (stainless steel buffer) Slash's Carbine X-Heavy buffer = 8.0 oz CWS only = 1.54 oz CWS/steel = 2.79 oz CWS/tungsten = 4.05 oz Now, never would I have imagined that a quality 16" midlength would even cycle with a 4.6oz buffer, with the added 4.05oz of the heavy CWS config. That's identical to adding an 8.65oz buffer to a 16" midlength setup... <dontknow> Go figure - but it shoots like a .22LR. In the next few weeks, I'll get it back out and cycle some notoriously weak Herters 55gr through it, and see what happens. As it sits now, PMC Bronze 55gr isn't even a challenge for it, as far as reliable cycling goes.
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I've been meaning to bring this up, after my experimentation with a couple sets of the Tubb CWS. For what I use the CWS for, it's a god send. I never had damaged brass or beat up cases, which the CWS seems to help with. I bought them primarily for recoil reduction, and I really only wanted one the the .308. Well, in my best Brownell's shopping fashion, when I went to add one to the cart, I impulsively changed the number to "2." <dontknow> I figured one of them was dedicated to the .308, and I'd play with the other one. Here's where the other one went, for a couple reasons, and I'll explain in a few... Rifle details: Spike's billet matched upper and lower set, Spike's 12.875" BAR rail - longer than standard, and might have been a mistake in the initial production run. LImited numbers and announced kinda quietly, so I jumped on it. Spike's standard "regular" BCG and the Spike's NiB combat trigger group. It's also sporting one of the first-release BADASS safety selectors. BCM Gunfighter large handle - used on every one of my guns, with the exception of replacing it in my .308 AR (now using the TAC OPS 1). MIAD grip, UBR stock, standard carbine spring, and Spike's T2 powdered tungsten buffer. The barrel is a Wilson-Nordic stainless 16" midlength with a .223 Wylde chamber - phenomenal barrel! <thumbsup> Optic is a Millet DMS-1 in a Burris PEPR mount. That's the important stuff. Now, as we've found out, billet guns can create their own problems, and I was slightly eating up the edges of the T2 buffer, just like the issues we're seeing with these Iron Ridge builds. It was very slight, but it was there, so something wasn't right with the machining here. Instead of calling Spike's and trying to get this fixed, since it was a matched set (one of the very first sets out of them, with serial number #31), I decided to try that "spare" CWS in it, to "take up the slack" between the back of the BCG and the buffer face, when closed. Believe me, it wasn't much, but it was creating a small problem on the buffer face... <dontknow> (cont...)
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That's a damn fine lookin' boomstick, wash. <thumbsup>
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If nobody chimes in with personal experience, then the very best way to find this out will be a phonecall to LaRue. They will be able to tell you with certainty, one way or the other, and they won't withhold the information. 512-259-1585 <thumbsup>
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I'm a big fan of sharpening by hand, and I've always used Lansky setups. One that I've got has been with me for over 25 years now. It went in my rucksack every single time I was out - it was a permanently-packed necessary tool. <thumbsup> https://lansky.com/
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(((SOLD))) WTS: Surefire M962 Kit ***NEW***(((SOLD)))
98Z5V replied to USMC_0317_SS's topic in For Sale or Trade
Hell of a good light, and great price, man. <thumbsup> I've got a M952XM07 setup, and it's great as well - just a slightly different mount for it. Good stuff. -
The 16" carbine gas setup is the preferred all around config, it's just not great with subs, unsuppressed. I'm thinking the ammo is the whole problem here, and it would cycle fine in it's original config, with different ammo. <dontknow>
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CMMG says the 16" carbine gas barrel is "Acceptable" shooting subs unsuppressed, but that barrel might not like the subs you're shooting. It's supposed to work, but it might not with your particular ammo. <dontknow>
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Hell NO... javelinas, though. Those suckers are fair game. <thumbsup>
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List the setup on the rifle, please? Or link to it? Disregard - got it: http://308ar.com/forum/300-aac-blackout/offical-300-blk-thread/ What we have is, is a AAS Lower / Multi Cal RRA single stage trigger LPK Over sized selector Brownells lazer etched upper Brownells ( dont tread on me ) dust cover Brownells lazer etched ( American Flag ) take down pin and mag release Tear drop forward assist Magpul Moe, Moe grip, Winter trigger guard, XTM panels,AFG2, and Mbus Gen 2 sights RRA BCG and CH YHM quad rail With end cap CMMG 16 inch carbine lenght CMMG single rail gas block unknown muzzle break
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That's some of the best you're gonna get, as far as the real stuff. Don't know what Bn the guy was from, but the primary Jiu-Jitsu trainer (in the early days of serious H2H) for 2nd RGR Bn was Marcelo Alonso. What a badass. That's 165lbs of 5'10" that you DON'T want to find in a dark alley, whether you've got friends with you or not. His favorite phrase when teaching classes - he has two methods, one for "defense classes" then the stuff for the mil classes. In the defense classes for everyone, he'd stop himself in the training, with submission moves, for protection. In those classes, when he stopped the maneuvers at what would be a submission, he'd kinda chuckle and say "different games, different games..." In the mil classes, he didn't stop. Way beyond submission moves - "permanent stop" moves. You could be a gang of dozens - don't try to take him on in any alley. Your ass would be kicked, all y'all. :o
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I like seeing more SAA lowers in use. <thumbsup>
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ATF Ruling 2011-4, Concerning AR Pistols and Rifles
98Z5V replied to 98Z5V's topic in Firearm Industry News and Gossip
Here's an actual (no poop) intelligent conversation about this ruling - my comments here, before the link - stripped lowers, as allowed by your state's laws, should be transferred as "other" on the new version of the 4473. That's why the new version was created. If it's stripped, and your state's laws allow it, it doesn't need to be declared as a "pistol" or a "rifle" on the new form. State's laws might demand something different, even with the new form, but that's one of the reasons I moved back to AZ... <dontknow> Okay - it transfers as "other" on the new form, and it's not a pistol or a rifle. It's simply a stripped lower. Check out this conversation, and summise your own opinions. All my stripped lowers will be photographed (with a digital date) with a pistol buffer tube on them, and a pistol-length upper receiver attached (less than 16" barrel). By serial number, visible in the pics. At that point, they all start their lives as a pistol build... <thumbsup> Read, discuss if ya wanna... http://www.ar15.com/forums/t_3_4/544575_Build_all_virgin_lowers_as_pistols_first_.html -
Can't see the front sight in that photo, as a reference - maybe it's me, or the background, or something. Try to get a pic or the profile there, with front and rear sights visible. Something in daylight. <dontknow>









