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SOLD is an angle cosine indicator (ACI) from U.S. Tactical Supply and the rail mount from Badger Ordnance. I bought it over six years ago in As New condition and it has remained that way since I never used it. The boxes are worn and I don't know why, but the components are like new. The green...

Is there a known product revision history for the Axiom receiver? Has the design been stable for a long time? Is it the same in 2019 as it was in 2018? Given the propensity to tinker in this industry, inquiring minds want to know. My purchase decision will be influenced by the answers.

SOLD is a Like New KRG Bravo chassis, green, for the short action Remington 700 type receiver. It comes in the original box with all of the original accessories. It has been on a rifle for a short while but not used much. $300 shipped. USPS money orders and other certified funds accepted...

(See new design in post #5) What use is the Minox Advanced Quick Ranging Scale (AQRAS) for calculating distance in yards? I can make use of the fine milliradian scale on the lower right of the MR5 reticle, but not the AQRAS scale on the lower left. Their user guide examples are in metric for a...

I'm considering a Kahles 624i with SKMR3 reticle. The details of the reticle subtensions are on the Kahles web site, but there is an unmarked dimension I am interested in. What is the distance between the center of the central dot and the beginning of the horizontal stadia? In other words...

What are the biggest drivers of weight in a tactical rifle scope? All things considered, what are the heaviest components? In particular, I am wondering what is in the Vortex Razor Gen 2 that makes it significantly heavier than the average scope in its class. It weighs 48 ounces and the average...

If the shooting position and the target are on the same horizontal plane, the ACI reads 0. As elevation is dialed onto the scope, the barrel is raised relative to the target. So even if the shooting position and target are on the same horizontal plane, an elevated barrel (and scope rail) will...

I have an older Gold Ring that has a mil-dot reticle with round dots and hash marks every half mil. The Leupold web site shows the Mark 4 spotter with a mil-dot reticle with no half mil hash marks, but the image is just a drawing. I have not found another image online. Do the newer Mark 4...

For reference, consider a Nightforce NXS and a USO SN-3 TPAL with illumination. The Nightforce incorporates parallax, windage, and illumination in a small section of the central main tube (the saddle), and the USO uses a large part of the central main tube to accomplish the same thing with extra...

Up until recently I owned two FN SPR. One was in a McMillan A4 stock and the other in an A3. The A4 had a saddle-type cheek piece and it kept slipping during the course of shooting. Its inadequacy for me became evident when I took a long range shooting class this summer at CVT Tactical with Ed...

I've owned Leupold scopes for years, then finally stepped up to a USO ST-17. I've stayed there for a while. I just decided to shop for another scope because I like the mil/mil turrets and reticle, unlike the (heretofore) moa/mil turrets and reticle of the Leupolds I have. I have casually...

I have McMillan stocks with the saddle cheek rest. They loosen with cheek pressure and recoil. I know that set screws on the opposite side are recommended. Between the thumbwheel and the clamp bar, which is the most stable under cheek pressure and recoil?

I knee-jerked a purchase of a Mildot Master so I could stop taking my vintage HP-11C calculator to the range. It looks like the ranging begins at anything that subtends 1.0 mil, but nothing less. I tried to line up 24" at 0.7 mils and - piss - nothing. Am I missing something, or did Mildot...

I cannot find a description of the differences between the types of fill offered in McMillan stocks. Will someone please describe the Standard, Magnum, and Sniper fill? I don't see that information on the McMillan site, even though the fill is an option on the order form.

I cannot find an online reference source that lists Remington barrel contours in a table for easy comparison of dimensions. I have seen a couple, but they appear to be incomplete, as they do not include the Milspec 5R barrel. I'm shopping for a stock to replace the HS Precision that came with...

I plan to take a course from one of the trainers on this board, and I'm sure my question will be answered at that time if I don't find it sooner. I'm looking to buy a spotting scope, and of course there are several that have mil-dot/hash reticles, and many more that have no reticle at all. If...

I just received a new ST-17 from US Optics. I like it a lot and have no complaints. I have owned Leupold Mark 4 scopes up until now. I did not anticipate that the lens cap, when open, would prevent the full rotational movement of the ERGO objective. The open cap runs into the barrel in each...

I had my FN SPR receiver modified to accept CDI bottom metal and AI mags. (Actually, the receiver does not need to be modified for the BM, specifically, but it does need to be mod'ed to fit the mags.) It's been a while since I had the work done, but I think the instructions said to remove the...

I want to try a bipod other than the Harris that is currently mounted to the sling swivel stud underneath my McMillan A4 stock. I suppose there is a simple solution on the market for a rail that mounts where the stud is, but I am not finding one. Any help will be appreciated.

I'm sure some of you must have seen this. I bought a new FN SPR a couple of years ago and was just tracing it for a Pelican case cut-out. What caught my eye was the marking on the barrel. I live in Fredericksburg, VA now, and I noticed this rifle (or maybe just the barrel) was manufactured here...