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Everything posted by 98Z5V
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It only takes one squib load, man. "Pop and no kick" is what the Army used to train during BRM. A no-powder charge will never get a projectile out of the barrel, on primer-only. Hell, you'll have a very bad time just trying to push a projectile down the barrel with a cleaning rod - won't happen. That first one never gets out, and you don't notice and keep shooting - the second one, even if it's full power, is only going to slam into the first one and mushroom it tighter into the barrel. Then, you just stack 'em up behind each other. One of the gun shops I went to in NOVA had a revolver barrel in the display case - cut in half like that. 6 projectiles stacked up in there. Any time you get a pop and no-kick, you inspect it and see what's up...
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Nope - and I've got time here... Look at a 9mm pistol barrel, in a pistol - it's usually 1:10" twist, and the barrels aren't anywhere near that - it doesn't have to spin a full revolution or rotation, in whatever twist length, to stabilize it.
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For Char, right?...
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Lane's: jtallen83 inspired 21.750" 300 AAC Blackouts
98Z5V replied to Lane's topic in 300 AAC Blackout
IMR 4227 is what I use for my .30 Carbine loading, and it's a good powder - I've seen many references for it for 300BLK. H110 and Accurate 1680 I have loaded myself for 300BLK, and have both on-hand for it. I like the 1680 for the 150gr FMJ-BT loading, works well. The H110 did well at that, too, but got hard to find for a little while, and I found the 1680 instead. -
What was the goal? You can run the 7.000" extension, with a heavy 2.500" buffer (like the KAK Industries) and the Sprinco Orange spring - those parts work well together, and are consistently manufactured.
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Savage makes a good bolt gun. I like 'em.
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Rifle buffer, and what looks like the Armalite AR15 carbine receiver extension. If running the AR15 carbine receiver extension is the goal, then you'll need to select the parts carefully (wisely). If just running a collapsible stock setup is the goal, then just buy the Armalite AR-10 Carbine Recoil System as a package, because it's alot cheaper that way. The AR-10 Carbine Receiver Extension is 7 5/8" internal depth, uses Armalite's own EA1095 spring, and AR15 H3 buffers (That's the direct equivalent of the Armalite AR-10 Carbine Buffer, identically). ^^^ If that was the original intent, then it looks like the incorrect Armalite receiver extension was ordered...
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Back to the 308 platform and have a couple questions
98Z5V replied to dubya's topic in Building a .308AR
Their AR15 extension? Or this one? https://www.bravocompanyusa.com/BCM-Intermediate-Receiver-Extension-A5-Buffer-Tub-p/bcm-intermediate-re.htm -
Couple years now - all their stuff. Looks scary when you look at prices, but register and sign up for emails, and nail that stuff at lower prices. The FireHose Flex pants are the very best pants that I've everhad the pleasure of beating the hell out of. They just rock. If y'all paid atention at the last fall shoot - that was all I had on. *** That comment above doesn't mean I was shirtless the whole time, like Vladmir Putin...
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Lane's: jtallen83 inspired 21.750" 300 AAC Blackouts
98Z5V replied to Lane's topic in 300 AAC Blackout
I'll admit I haven't read that link yet - but when I go to it, I might realize that I've read it before. I've done some time looking up OBT. However, my question on it (without reading it) is this: Was that bolt gun data, or gas gun data? With gas guns, you have a whole new world that you need to account for, with dwell time being one of the biggest factors. Barrel profile, they're all right-hand twist, so you can account for that in the harmonics (big part of the harmonics), those things are secondary, but important, but dwell time it the one on gas guns. True, but you also have to calculate that timing with a different bullet and load - to an accuracy node in that bullet and load. The OBT info accounts for this, but you need to test it on that specific load that the OBT states is accurate - and it's on. But test it. Gas guns complicate this, with dwell time... -
This is the key, right here. It's tough to load a bipod on a concrete or wood bench - nothing for the feet to dig into, so it's tough to load up and get solid on it. Having a stop in front of you changes everything, with you combine bipod and bench. Off bags, it's a different technique - loose. Lay the rifle on the front bag, don't grip the rifle tight-as-hell, light trigger hand grip, and smooth trigger squeeze - try no to disturb it as much as possible. Shooting off rocks is like a bench - I reach forward with the offhand and grab a bipod leg to lock the bipod in position, then load it from there with firing shoulder - and get it into my shoulder.
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I'd be WAY HAPPIER with Jodi Arias, but I'd smash AOC.
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Lane's: jtallen83 inspired 21.750" 300 AAC Blackouts
98Z5V replied to Lane's topic in 300 AAC Blackout
All kinds, but I can tell you that forge marks don't really matter. -
Serious?...
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Lane's: jtallen83 inspired 21.750" 300 AAC Blackouts
98Z5V replied to Lane's topic in 300 AAC Blackout
Muzzle velocity. The most I can drive my 300BLK 150s to is about 1800fps through a 16" barrel. It's not even enough to explode Tannerite at 100 yards. Tried it many a time, thinking that I was missing the target - only to walk down range and find that I gave the 2-liter bottle a huge leak. Went back to the firing line and shot it with the Mk12 and BOOM!... Inherent accuracy in a projectile is in the bullet construction and muzzle velocity - how many people you know can shoot MOA with a 5" 1911 at 50 yards? The projectile isn't designed for that, it's subsonic, fat, slow, and that was never what it was meant for. Muzzle velocity is your friend in accuracy testing, as long as you hit an accuracy node in the loading, and stop there, before pressure signs. You picked a real tough cartridge to pull for an accuracy-over-barrel length test, that's for sure. I don't doubt in the least that this is gonna be good, and we're all going to find out alot. But you need speed, man. Heavies and barrels designed with fast twists for heavies aren't going to be the answer, overall. That 1:7" might not be bad at all, but the 1:8" os the "overall" twist on BLK - handles all of them about as well as a twist rate can, from superlight to 220 subs. That 1:7" is more for the higher end of the weight class on these, but it still might do great with a 125gr or something. This will be good, that's for sure. -
We will talk about this - you'll love it. I just converted this many pieces of .308 brass into .260 Rem, and it's getting loaded tomorrow night. Then, more... and more... I have 1.5 weeks to be drowning in .260 Rem ammo, and it's ALL gonna get shot 15~17 March... There's about 300 of them in there, already primed and ready to drop powder and projectile. You'll need one of these, but we'll get to that when the time comes, and discuss the "optional things" for it.
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I like Simon, alot - this thread sealed the meal-deal...
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Problem finding buffer tube for an adjustable stock
98Z5V replied to GlennD's topic in General Discussion
Doc is offering you a money-back guarantee, straight from himself, because he's the one that recommended it to you and gave you his word on it... -
Oh, I said early on - I'd try to bang the socialist out of her...
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Lane's: jtallen83 inspired 21.750" 300 AAC Blackouts
98Z5V replied to Lane's topic in 300 AAC Blackout
Only the loads will tell... -
Lane's: jtallen83 inspired 21.750" 300 AAC Blackouts
98Z5V replied to Lane's topic in 300 AAC Blackout
If the 1:7" is already ordered, then up the weight on the projos, over the light-weights with muzzle velocity. If the 1:7" is already on the way, then the game has already changed, right into mid-weight projectiles, at a minimum... Like I said - you picked a winner of a cartridge to do this test on... TONS of variables!









