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Optics WTS: Primary Arms Plx compact 1-8x FFP (Raptor M8 yard reticle) with AUS mount $1,000

Selling a lightly used Primary Arms Plx compact lpvo 1-8x in FFP with their Raptor M8 reticle (yards). Comes with everything from the factory in the box. Only used at the range twice.


$1000 shipped, PayPal F&F for the scope


I can also include a Reptilia AUS mount (30mm ring 1.54" height) with rmr top plate for an additional $250

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Barrel Torque Ludicrocity

And I recanted, and explained that only one flank is loaded.
The flank may be loaded by the torque of hand tightening, BUT mechanism in the AWMC does not increase the tension in the joint.

If you put pressure at the arrow onto the chingadera, will it increase the pressure beteeen the barrel shoulder and receiver face, decrease it, or stay the same?
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Rifle Scopes School me on Magnification between brands. March PRS

I realize what I’m seeing now. Shit was playing tricks on me…
Please don't beat yourself up on this. Let me tell you a story.
A few years ago, March introduced the March-X 8-80X56 HM Majesta. The original 8-80X56 has an AOV of 20°, which is pretty much the standard in eyepieces. The regular eyepieces range for about 18 to about 22-23°. In F-Class (boo, hiss), the eyepieces of all the top riflescopes are between 19 and 20°. In 2022, I had a prototype of the Majesta, and I lent it to a great F-Open shooter (I'm an old decrepit, past my prime F-TR shooter,)and he won the Nationals with the Majesta. He was running it at 80X in Phoenix at 1000 yards. He said when the mirage was too soupy, he backed it off some and when he looked, it was at 75X. The FOV of the Majesta allowed him to see his entire target at 80X and half the target on either side of his. Keep that in mind.

The Majesta was released in 2023 and has been winning the F-Open Nationals and/or also taking second place and more ever since then. It just won the Euros at Bisley last month. Most people run it at 80X, but there are some who back off to 60X and don't even use a spotting scope anymore because they see all they want to see at 60X in a Majesta.

Interlude. The vast majority of shooters are unable to properly compare optics, even side by side. Here's why: they can't compare like for like. I have been attending SHOT Show in the March booth since 2018. I have observed hundreds of people looking at, through, and around riflescopes. They will wind the zoom down to the bottom and then cycle it through to the max, and then back and forth a few times and nod their head. What did they see? What did they expect to see? What is their recollection? They have no clue. It's not to be nasty, but it's reality. If I give you a Majesta to look through and you go through the ritual I just talked about, you will see a BRIGHT, huge, dazzling image going from 8X to about 40X. After that, it starts getting a little darker, and darker and more so. When you get to the top end, 80X, it's friggin dark and tough to hold. Especially when you're standing up, holding your bag of giveaways. So, I put it on a tripod, which makes it a little easier to see. Your memory of this riflescope: it sure gets dark and touchy at the top end. You're absolutely correct, but when you compare it to a riflescope that has a zoom range from say, 15X to 55X, you think that brand doesn't get nearly as dark at the top end. In reality, you have compared an 8X to 80X zoom (10X zoom) to a 15-55X (3.5X zoom). End of interlude.

A few months after the Majesta's introduction, a friend of mine who was shooting a 15-55X riflescope, wanted to see what the big deal was with the Majesta. I offered him to look through mine as my rifle was on the line. He got behind it and looked through at the F-class target 1000 yards away. After a bit, he got up and he said that he couldn't see what the big deal was. I asked him to check the magnification setting on the Majesta. I have mine at 80X all the time. He said, it's 80X. I asked him at which power his scope was set and he said 55X. I then asked him to set the Majesta at 55X and that another look. His face spoke volumes. He understood the difference.

I already talked about different zoom ratios, but now he had stumbled on the different AOV issue. You see, the 15-55X scope he was used to has an AOV of about 20°. The magic is that at 73X, the Majesta has the same AOV as the other scope at 55X. The difference between 73X and 80X, is mouse nuts in this comparison. His brain was used to seeing the F-class target at 55X, with half a target on either side. It was getting the same picture in the Majesta at 80X, but the brain didn't grasp that the picture was bigger, it just saw it as darker. 80X will be darker than 55X. When he wound down the Majesta to 55X, the AOV was a lot bigger, and the image was much brighter. It takes a while for the brain to adjust and figure out that the size of the target is the same 55X for both scopes, but that the Majesta shows a lot more of the surrounding environment. This fools the brain into thinking the image of the target is smaller. But it's not and you can easily place the reticle. When you crank the Majesta back to 80X, the target view is the same as the other scope's at 55X (near enough) but the brain doesn't realize it. It's only when you start placing the reticle on the 80X image that you realize you can be much more surgical in the reticle placement.


When you try to compare two or more riflescopes, you have to be very much aware of the specs for each: zoom ratio, low mag, high mag, and AOV. People make statements such as "March scopes are dark" because they don't grasp that it's an 8X or 10X zoom, compared to a 3X or 4X zoom. From bottom to top, a 10X zoom will darken, much more than a 4X zoom. But then you compare at the same exact magnification on both scopes, the results are different. It's even more insidious comparing wide angle riflescopes to regular riflescopes, as you have discovered.

This is why I am saying the vast majority of shooters can't compare riflescopes. The best way to do that is to use the riflescope and see if it limits you more than the other scope, or does it allow you to perform better. This is what we are seeing now with the March-FX 5-42X56 PRS scope.

The extra AOV (Angle of View) allows you to either run at higher mag, be more surgical in placement of the reticle and maintain the same image to your brain as before, or, run at the same magnification as before and use the larger view to detect condition changes and gain extra awareness. Or a little of both. Either way, I think you will see that the added AOV will enhance your performance.

It has been my experience that most people will default back to having the same sight picture and will benefit from the higher magnification. But there are some shooters who prefer to take advantage of the larger picture at the same magnification.

And before you ask, yes, I believe there is such a thing as too much AOV in a riflescope, but that's for another day.

Sorry for the long rambling post.

4DOF inclined fire error

don't most rangefinders give the horizontal effective distance? what am i missing (surely something)?
Yes, and you can see in my table in the OP what the elevation correction for my scenario is if using a EHD range, vs the angled solution for line of sight range. There is a small difference, because the EHD accounts for the partial gravity vector, but does not account for time of flight. The longer the range or the greater the angle, the greater the error induced by using EHD.

In this case its 0.13MRAD if using AB, or you'd have a dialled error of 0.2 which is significant

6 ARC Gas Guns

AR Comp and H4895 with 80s in 6 ARC are a match made in heaven. Stupid accurate and consistent. All I run in mine


So it's a Valkyrie in 6mm?

Every time a new caliber comes out for something with a max OAL of 2.260 - 2.300 it only goes fast with 80s. It's almost like we need an intermediate AR frame with a new set of .224 - .308 variants.
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Well, now I’m realizing I’m even older than when I realized I was old.

I’ve commented in the past that I knew I’d gotten old in 2002 when I spent more on 2 tickets to see The Eagles in Knoxville than I did on all the tickets and weed I bought in the summer of ‘76 (and that included Skynyrd, CDB, Marshall Tucker, Outlaws, Frampton, Gary Wright and a few others). For reference, tickets I the 70s were $6-$14 in the Savannah Civic Center(and weed was $20 an Oz)

I’ve made my teenage sons real fans of the music of the 70s-90s, games of “Name the Artist and Song” are a regular part of out driving, and they are good at it, and both are Rush fans.

I learned this past week that Rush is touring in ‘26 with Anika Nilles on drums. They’d love going to see Rush, even w/o NP, so I went to the 26 tour website to look into tickets in Toronto (closest to us, and really it is Rush, Toronto would be the right place)

HOLY CRAP! Nosebleed seats are $465ea, the floor is $2k+. Who pays that for a concert? At least with Rush they can reliably be expected to be actually singing and not using a backing track, but come on. Us poors aren’t gonna get to that show.

Barrel Torque Ludicrocity

But the chingadera in the receiver of the AWMC is floating in the receiver. All it is doing is pushing and self centering into apposing vees.
Think about this another way. You screw the barrel into the receiver until it shoulders. The flanks I described above are loaded slightly(hand torque). Tightening the quickloc screw shrinks the pitch diameter, and loads those flanks even more, creating a tensile load.

Vudoo bolt disassembly videos gone

EXCELLENT work, @David Lott . Many thanks.

I would point out to the community that it is imperative that the nose piece, with the firing pin protruding through it, must be allowed to rotate freely when starting to unscrew the firing pin assembly (starting at 0:25 point in the video). The video shows this but doesn't comment on it much. Not understanding this caused me to trash my rifle's firing pin years ago. Here's how it happened.

My rifle had one of the early conical breech configurations which, I am told, caused gradual deformation of the nose piece. Over time, the nose piece began binding on the bolt body to the point that, when I unscrewed the pin assembly from the bolt body, the firing pin bent. It was at that point I discovered that the nose piece rotated on the bolt body only with a ridiculous amount of torque. "Old Vudoo" sent me a shipping label and squared everything away quickly.

It was because of that experience that I wanted a good, clear refresher on gen-1 bolt disassembly. This video is GREAT for that.
You are correct, that one spun freely so I didn't think about mentioning it. Good catch. I'll try to edit and add that.
On edit, I will redo it and cover that part as well also cover how to fix it, pretty easy once you are torn down that far.
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Giant ammo plant in TN blew up!

Lost several friends. I thought a tree fell on my house when it went off. 16 dead. I’m 9-10 miles away. Been a tough time for local folks.
I feel for your community. Something like this hits extra hard in smaller communities where most people know each other. Prayers for the deceased. May they rest in peace.

Vudoo bolt disassembly videos gone

EXCELLENT work, @David Lott . Many thanks.

I would point out to the community that it is imperative that the nose piece, with the firing pin protruding through it, must be allowed to rotate freely when starting to unscrew the firing pin assembly (starting at 0:25 point in the video). The video shows this but doesn't comment on it much. Not understanding this caused me to trash my rifle's firing pin years ago. Here's how it happened.

My rifle had one of the early conical breech configurations which, I am told, caused gradual deformation of the nose piece. Over time, the nose piece began binding on the bolt body to the point that, when I unscrewed the pin assembly from the bolt body, the firing pin bent. It was at that point I discovered that the nose piece rotated on the bolt body only with a ridiculous amount of torque. "Old Vudoo" sent me a shipping label and squared everything away quickly.

It was because of that experience that I wanted a good, clear refresher on gen-1 bolt disassembly. This video is GREAT for that.
  • Like
Reactions: David Lott