98Z5V

The lawsuits and challenges need to start piling up fast. As Fuk. Would be good if our lawmakers - the ones that actually ARE ON THE HOOK for this kind of legislation, kicked it into high gear, and smacked this agency down, a'la West Virginia Vs. EPA - but I doubt they'll do it. This is THEIR wheelhouse, and they need to defend it. Against an Administrative Agency, only.

I figured as much...

Determinations. Cylinder volume on the .260 Rem is 0.0012214. That's a 20" rifle gas barrel with a 0.750" journal and the 0.080" gas port. That's running a 2.500" 5.15oz buffer, lightest that I've tried to use that works. That's not the proper buffer weight, not 5.4oz, so that port diameter might need to be slightly larger to run a 5.4oz proper buffer. That gun was an experiment (the ONLY time, ever) that I've ever run a 2.500" buffer in a large frame, carbine recoil system. No other large frames I've built use that, run that - and it was a proof of concept, and it works. That was as heavy as I could get that little stubby 2.500" buffer in 2018. That barrel shipped with a 0.070" port, and had problems. I had to figure out why. That number on the .260 gas port came from the common 18" Rifle gas barrels in .308 Win, 0.750" journals. Those need 0.095" to run right, minimum, sometimes a little more. Backwards planning had me go to the 0.080" on that .260 Rem. It runs like a champ, is laser-accurate, and just works. No need to change it. My 2.500" buffer-use experiment is done. I'll never use another one, though, and haven't ever. On this 18" .308 Win rifle gas barrel, 0.750 journal, at 0.095" port, the cylinder volume is 0.0015644. On this 7mm-08 barrel, as shipped, 0.750 journal, 18" rifle gas, that comes to a cylinder volume of 0.0010569. Not gonna do it. Will have problems in operation. If I increase the gas port to a 0.090", cylinder volume goes to 0.0014822. That will work, and it's pretty close to 18" rifle gas 0.750 journal .308 Win numbers. This is all nugged out with a proper recoil system, with a buffer weight of 5.4oz. And a proper recoil spring for whatever extension you're using. If THAT PART isn't right, none of these numbers mean shiit. This is balancing the proper recoil system, and then balancing a gas system that matches it. This is what makes guns reliable. Weaponize math, brothers. That's what it's all about. Math. It's fuckin' Nerd Magic.

OUCH!!!

Well, not much of a choice anymore, looks like. It's been several years since I used the 175s, but they're not even listed anymore. I probably still have a box of them around here somewhere, to get the data from, but I'm pretty sure they were a .505 G1 BC. The new stuff blows that away. The ELD-Match is a .547 G1, but the ELD-X is a .552 G1. Now, there's just a 178 Match with a .530 G1, which is what probably replaced the 175 Match. When I used the 175s, They came out with the 178 Match, and I made the switch, because of the BC improvement from .505 to .530. Years of use. When they announced the 178 ELD-Match, I almost switch immedately, but I had several hundred 178 Matches to burn through first. By that time, they introduced the 178 ELD-X, and I did switch immediately. The jump from the .530 to the .552 was a difference you could see at 850 yards - the dope charts were different. Click it, it gets bigger...

That's actually not too bad. I opened this expecting something completely disgusting from you...

Just for clarification, he's not using a 5.4oz buffer. I shoot with him twice a year, and know his gun, intimately, He's using this 10oz buffer in his gun.

By "standard buffer", he's referring to a 5.40z buffer, that should be used in these things from the get-go.

Nope, the really heavy one from heavybuffers.com. This one, first on this page, the 10oz one: https://heavybuffers.com/ar10rifle.html

Definitely interested...

FWIW, I just fixed a suppressed and unsuppressed gun through PMs. 16" rifle gas .308 Win barrel with a 0.750" gas block journal diameter. That ain't easy. But the gun runs perfectly now, according to the owner. People can listen - or not listen. Goes both ways, too.

I'm not even getting into that one. The blueprint has already been posted. What needs to be done has already been posted. These guys can either do it, or not. I'm out.

No possible way this 0.076" gas port will work. Will never happen, with a proper recoil system in place. It's gonna have to be 0.085" minimum, and probably 0.090" in the end. I think it's just gonna get the 0.090" treatment right away. As it is, it's just not right. Thanks again, WC.

That sounds good, Ed. I used Hornady 175gr HPBTs for a very, very long time. About 3 years ago, I switched to the Hornady 178gr ELD-X projectiles. The BC is so much better on them, over the 175s - better enough, to make me switch.

@shepp, this place is in Janesville. If this the place that kept getting broken into, and guns stolen?

Who are you, and what are you linking? Why is this at the bottom of the page you're linking?:

I've never tried the flat wires. Have no input on them. My rationale is simple - Don't complicate shiit with complicated shiit. Don't need anything fancy, bougie, or anything else - just use what works, every time. I only recommend and use what I've seen that works, and it works. That's my $0.02.

Helping how? You're not even answering basic questions that were asked of you. You're evading and deflecting.

As I am, as well. If you're fishing for an argument, you'll get it from me. If you want to fling insults - I'll play. If you want to calm your ass down, and chill out a little - that will help. If not, let's get it on. You can play Dickhead as much as you want, and it's not gonna end pretty here on the board. You decide where this goes.

Good luck. This shiit legal?

Posted at the same time.

Now, @BrianK - get to this one... When does this shiit separate?

I've been reloading for a very long time, Brian. I've never seen anything like this in a 300BLK with a .224 inserted projectile, ever. So, in light of that, and your definite lack of an explanation, or a picture of what you're doing - understand that.

This? If that's the answer, and it's yes, then what barrel are you shooting this through? When does this shiit separate? In flight?

If they're saying this now, then previous rulings/decisions are gonna bite them in the ass, pretty hard. They approved cane tips on the end of the pistol extension over a decade ago. This is gonna go miserably for them.