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"Over Gassed" AR's Fact or Fiction? Other Perspectives

I see a lot of postings suggesting AR failure to feed malfunctions may be because their rifle is "Over Gassed" and I really have to question this. For backdrop, I have built up and test fired in excess of 500 AR-15's, many of them with custom or wildcat cartridges, and with a myriad of barrel lengths, gas system lengths, etc., where there was no recognized or normally accepted port sizing (had to figure it out).

One of the main arguments of the failure to feed malfunction as relates to "Over Gassing" is that the bolt carrier and bolt speed is too fast.

I have yet to see "Over Gassing" as a source of a failure to feed malfunction to be a real issue for a few reasons:

1. The speed of the carrier and bolt coming forward to feed a round is almost 100% governed by the stiffness of the buffer spring and the weight of the buffer.
2. If a rifle is "Over Gassed", that may speed up the retreat of the carrier and the unlocking of the bolt out of battery, but it does not per se speed up the carrier and bolt coming forward (i.e. the buffer typically hits the back of the buffer tube and the dead plastic end of the buffer softens that strike so it's not metal to metal, but it's not a trampoline effect, nor was an AR buffer system designed to do that).
3. An AR gas system is set up to bleed off all gas immediately after the bolt opens out of battery (i.e. it blows out the vent holes in the side of the carrier) so it's not like the system holds onto excess pressure to somehow convert that into carrier or bolt speed coming forward.

I am also not a big fan of adjustable gas blocks and I have seen plenty of issues with them (taken a bunch of them off customer guns a returned them because they were a source of a problem that did no exist). First off, an adjustable gas block is of no value at all unless the rifle is over ported. All an adjustable gas block can do is cut back the amount of gas being delivered into the gas system from the port, it can never add more than can come through the port. It may have some value for someone that wants to run something like a 300 BO where they want to shoot subsonic "heavies" with a real fast powder through a can to run very quiet (ergo they have a very large port to do that), but then wants to shoot supersonic and push bullets to the max where chamber pressures are running double what they are with a subsonic loading. Even then, what I typically see is an AR cycling back hard and ejecting aggressively but that's about it.

I have probably "opened a can of worms" here with this discussion but there are other perspectives on the issue involved.

SOLD 308 Lapua Brass - 3 x 100 (Same Lot), 2 x 100 (Same), and 1 x 100 - $325 for all - Shipped!

308 Lapua Brass - 3 x 100 (Same Lot), 2 x 100 (Same), and 1 x 100 - $325 for all - Shipped!

Feel free to message me with any questions you may have. PayPal FF, Venmo, CashApp, or Zelle.

They have been through a gun room move so the boxes might be a little scratched from being stacked during the move.

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And another one.

These murderous, horrific black on white attacks are becoming a near daily occurance.

If it were the opposite, the Left and it media would be howling.

Whites are going to have to take on the mindset of the Israelis when they are out in public; always be armed and never turn your back on these savages.


How long before the Leftist trash buy this animal an Escalade?

1745157823598.png

Hahahahahahahahah- fucking perfect!



They went on strike cause they wanted more pay, while they were striking ticket quotas fell- revenue fell- and now they are being fined for not bringing in enough revenue.

And now they admit that they are just revenue generators. How many times does that chief say “ they are punishing us for not writing enough tickets “

It glorious to see two groups that ya hate eat each other in this case Dems and pigs .

Snow beaners are truly idiots…

Present company excepted… because you guys are the exceptions to the rule otherwise you would not be here….

But massive early voting in Canuckistan… and everyone is lining up to vote for the liberal socialist commies who will “stand up to Trump” as if Canada (with an economy smaller than NY City and an army smaller than NYPD) can stand up to anything.

Instead of voting for a conservative who will restore their rights… secure THEIR borders, cut their taxes, exploit THEIR energy… and also work the the U.S. to create free trade on equal terms that will help bring a business Renaissance back to North America, instead of letting the ChiFascists have it all?

Orange Man Bad… so Canuckistanian brainwashed sheep will vote away their right s and freedoms, because some commie blohard snowbeaner is going to claim “I will stand up to Trump?”

An hahahahhahaha… 50 years progressive education and migration and CBC propaganda and leftist policies have take One of the great Western powers (that punched way above its weight for a country that, then, had just 20 million people or so) and turned it into a nation of bleating socialist sheep.


Baaaas baaaasa. Truckers bad. Orange man bad. Cuba good…. Baaaaa.

What a bunch of disarmed morons. They will vote themselves into third told status and think they are heroes for standing up to the one administration that can actual help Make Canada Relevant Again. (Never were “that” Great. But at least they can have back some delusions of global relevance and not get arrrested for posting memes… which is coming next, hosers.)

So go vote properly Took-sporting hockey beavers. Save yourself from decades more oppression. Because no one is coming to save you, either. We want your land and your minerals… but we got too many socialists already. No 51st state for you!!

Your future is in your hands!

[\rant]

SOLD Tripod

I believe this is a Slik tripod but the name is worn off the foam on the leg. Used this at the range for spotting scopes and in the field to hold my predator call. Legs are plastic, body is metal.

Legs in the narrowest position are 11” collapsed and 32” extended roughly.

Asking $70 dropped to $50 shipped

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Arken SH4J 6-24 failed

Title pretty much says it: my Arken SH4J 6-24 lasted about 400 rounds on a 308 bolt gun before starting to fail.

Initial indication was "known good" match grade ammo starting to open up from typical 0.5moa groups to 1.5moa with lots of random flyers. In addition, 0.1mil adjustments to the turrets resulted in actual POA shift of 0.5mils.

I initially checked all torques specs and retested with the same result. When I swapped out the scope itself, my typical accuracy immediately returned. I have concluded that the scope is the issue and am now working to return the scope for replacement under warranty.

Hopefully I will update with a positive experience with Arken customer service. I have already noticed they don't post a phone number and they don seem to have a specific site or email for returns. I did request a RMA yesterday and am awaiting a response.

BnA Tacsport X vs PRO

Looking to get either a Tacsport X or Pro X for my 2 Zermatt Origins (2 stage). My understanding is the 2 main differences are the pull weight range and the polished internals.

Anyone have both and could you tell a difference in the feel between the two from the Pro X having the better honing?

Also, from this Chart it seems that my Origin may need the low sear which I understand is going to cost even more money on top of the original purchase price.
Anyone run a Tacsport with a Zermatt action without issues?

Thanks