Which magazine length does the bottom metal accept? I looked online and it appears that there are three choices 3.715, 3.775, or 3.85?

alamo5000 said:

I am just asking for clarification, but have you put your elevation in your calculator? Using sea level calculations up in the mountains can definitely throw everything off.

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Yes, the App has location through GPS.

Ledzep said:

Being that far off that close, even with subsonics... to me, screams of something else not being quite right. I'd be looking at your zero.

If you tell the calculator you're zeroed at 50 yards, it better be 50.0 yards and it better be spot-on at zero. The closer you do these things, the more precise everything needs to be. Saying, "Ahh .15" off, close enough" is twice as bad at 50 than it is at 100 than it is at 200, etc...

If you tell the app that the bullet crosses line of sight (zero) at a given distance, it runs the calculation so that it crosses at that distance exactly. Any error in your zero is a direct linear error carried through all the calculations.

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My zero is set indoors, with the distance actually ranged and the target placed at the exact spot (not 24yds, not 24.5, actual 25yds).
So, yeah I try to eliminate as many variables as I can.

Bearcatrp said:

The price is nuts for one without that plate. Think I saw $79 bucks from the link provided.

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Those were 12 rounders but even with the plate they are about that much. They are a thing that lasts though and you will have them for years. I have my original AI AICS mags from 2004 and still use them.

Also look at them on Black Friday as the MDT sale is usually close to half price.

You guys should all know better shame on you all. You go about your lives looking for the flattest trajectories you can get.

If the earth were round you would be looking for drop that matches the curve.

But no you bitch about drop all the time.

Like this? Hornady's latest earth curve matching bullets with a bc of 0.0 67

Get this guy into a retirement home already! Geeeez!

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Does anyone's phone or computer not translate? Don't delete it for me. I don't really care. It appears to be more nothing to me. I am sure will see it as a bomb shell, and others are going to connect it to the joooooos.

Interested in a black ris ii?

JR1200W3 said:

Well, because dropping the gas or upping the buffer weight only delays unlocking so much and people are trying to figure out how to delay it longer. It would seem, no? And I don't think you need a proprietary buffer tube, spring and buffer for the LMT BCG do you? Or the BCG in the OP? Or the Surefire OBCG?

I'm interested in this as a way to get a quieter suppressed AR with less gas. I'm not sure that it's a real solution yet. I do agree optimally gassing the rifle should be a shooter's first step before anything else. And I suspect that the benefits of these alternative BCGs are really diminished once the gas is adjusted. I have limited experience with these type of BCGs. I tried a KSPEC on a rifle that was severely over gassed. I tuned the gas port and made it much smoother, less recoil and ejection port gas, and a tad quieter. Then I dropped the K SPEC BCG in. I was pretty disappointed but I suspected all along the difference was going to be super negligible. I think a person would have a hard time telling any difference between the KSPEC and a standard BCG in a well gassed gun. So maybe it's the same situation with these delayed unlocking, elongated cam path BCGs. But maybe it isn't. Having less opportunity for gas and sound to escape the ejection port would be cool. If the Griffin side pocket BCG demonstrated a noticable difference (in an already properly gassed gun)that eliminated a substantial amount of gas and was quieter at the shooters ear, I would commit to a proprietary buffer tube, buffer, and BCG. My only issue would be the cost.

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Honestly, I may be mistaken about the proprietary parts with regard to the subject of this post. There are, however, other BCGs that seek to do the same thing, that are comprised of proprietary parts.

I don't quite get what you mean by either the buffer or an adjustable gas block only being able to increase lock time by so much, implying that the BCG can increase lock time beyond what can be done with another method, while still having a running rifle. Either buffer weight or an adjustable gas block can be used to increase lock time to a point where there is no longer sufficient pressure to operate the system.

Still, there is such a thing as too much closed bolt lock time. The longer the bolt stays closed after a round is fired, the lower the pressure available to cycle the action.

Again, taking the example of the properly gassed rifle that runs well on a standard buffer and spring. Now, take that rig and drop in a BCG that increases the closed bolt lock time. What happens? By the time the bolt unlocks, there is likely no longer pressure sufficient to cycle the bolt with its existing mass. So, what do you do? Reduce the reciprocating mass and/or spring rate/tension? I can see this having a negative impact on reliability as the rifle is fired and gets more and more dirty. It will get to a point where the buffer mass and/or spring no longer have enough umph to peel another round off of a fresh magazine.

If you look at it from the opposite side, with a severely overgassed rifle. Say an 11.5 with a .078 or .080 gas port. You're getting stuck cases and the rifle is beating itself to death. In this case, I doubt that the lock time added by this BCG will fix the problem without some help from either a heavier buffer or adjustable gas block. In this case, you could have just omitted the BCG with the use of the other two items.

The only point I'm trying to make is that this BCG being discussed would likely do well with a slightly overgassed system, but the solution isn't worth the expense when you can get the same result with a $200 riflespeed and/or $30 buffer, while getting a lot more flexibility.

Still, what would be interesting to see is if you take, say an 11.5 with a .070 gass port. Perfect. But then you throw something like a Polonium or YHM Fatcat on the end of it for a dedicated suppressed rig. Will this BCG delay the unlocking enough to rein in the added pressure and do something about the gas face. If so, this BCG may be a good option without having to mess with an adjustable gas block.

The earth being flat is observablely and provablely, false. Plate tectonics and oil having an organic orgin are not. These things are not comparable.

Bump

There is a link. There is no reason to attempt to transcribe half the internet into this thread.

Like Russia would claim Oswald as thier trained asset. And not deny any involvement in the assassination.

hollowoutadime said:

Bummer it's not 90%, still cool.

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not 90% what?

secondofangle2 said:

I think it's a first: VV posted official 375CT load data; but nobody's gonna like it.

I had abandoned N570 by the time I got the 390s, but I ran it till it burned up one barrel (~700 rounds) with the 350 SMKs. I was running 134 grains in Bertram, getting warm, but 132 was a fine load, cases were fine had some with 10 firings on them. I was getting 3150ish.

VV lists MAX load for a 350 SMK at 128.4, for 3015 fps from a 32" test barrel. WEAK! ANEMIC!

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Hat tip to "Fuck Your Democracy" (forget his actual handle, has 253 in it) for bringing this to my attention. Was released last month.

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Those are insanely low numbers for what most people are running, I wish they had pressure numbers posted.

Gorgeous sword and incredible detail, but I honestly would have liked to see more actual forging and work than talking about it.

MerkZ said:

Do they usually show up there first?

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No sooner then any other online retailer.

@Gunfighter14e2

Your not paying attention to our official stated agenda.

From our poletburo: It's all about the drugs and cartels.

If we wanted to take the oil we could take it from Mexico so it would be able to come to Texas via pipeline instead of tankers.

It's not like we are in Mexico pretending to go after cartels with military . Uh wait. Mmmm.

Ok Screw it I'll see myself out as well.

Bummer it's not 90%, still cool.

theLBC said:

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