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AAC ammo grenading rifles

cypriss32
TonyAngel said:
I can tell you that I have compared the Black Hills 5.56 77gr loadings to the 77gr 5.56 load that I got from Black Arc. Granted, I didn't shoot too much of either, at approaching $1.50 a round; but the Black Arc did come in at close to 100 fps faster in my 16". 100 fps really isn't much, but considering that the Black Arc shot better and isn't too far off in price, I think the Black Arc is worthy of consideration. Just mentioning it since Black Arc is a contender in the NAS3 game.
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I’m sure it’s good stuff. But the person who made that video inserts his black arc code in all videos. Plus I don’t want to be swapping barrel every 1k ish rounds shooting NAS3 stuff. Listen to the interview Paul Craddock did with Frank lowlight about that.
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Barrel wear or a manufacturing problem?

lash
Aftermath said:
View attachment 8685947
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We’re going to have to ask you to stop posting facts. It interferes with our theories and SWAGs. 😄



What’s interesting to me is that this thread unintentionally reminded me to address the possibility that my suppressor is involved in an issue I’m having. I may go back to square three and test the variance when using it on a particular rifle.
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CHRONOGRAPH USE AND BASIC SAFETY

Oryx
The results of reloading manifest in multiple ways ... a chronograph gives directional information regarding the anticipated velocity envelope for the cartridge and load specifications. Velocities outside of expected results would indicate a possible (or probable) issue.

It's not just for safety, but a very useful tool in the process to monitor safe loads
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Right or left ?

spife7980
straightshooter1 said:
It's not just reaching that the 600°F, but also how much time it's at 600°F. I assume you're talking about Fahrenheit??? 600°F is only ~ 316°C . . . which is not enough to do any level of annealing unless is for a very long time. Annealing (or the "flash annealing" that we do) the brass is best done at 650°C (1,200°F) :rolleyes: .
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And what about the cool down time that he was talking about?
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CHRONOGRAPH USE AND BASIC SAFETY

Supersubes
Your snippet lacks context, but a chrono does perform a safety function, and not everyone measures case heads. Time and again we see handloaders loading to book max, thinking everything is peachy, because the book says so afterall, while ignoring obvious pressure signs. The high chrono velocity would have been another indication of high pressure. No guarantee they would take it as a warning of course, as some think physics just gave them a pass on their shiny new gun.
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