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I suppose it depends on what you mean by "buy it for life". For example, if you mean the manufacturer will honor its warrantee for all time, likely there is no such scope. Since all companies die, eventually. My impression is most high end scope manufacturers have essentially unlimited...

I measure my mounts with precision calipers. These make measurements quite reliably to the hundredths of a millimeter. That way you can check to see if your scope mount keeps the scope parallel to the barrel or if it is intended to give some fixed amount of tilt to your scope. If your mount...

To me it looks like a step towards creating a "farm gun". Like the .22LR that you keep in a shed, and only take out a couple times a year. This kind of airgun is sort of like that, provided the nitrogen bottles don't leak air before they are mounted on the gun.

I have the same fire alarm. Things that can bring on the persistent chirping: 1) Battery dead 2) Power cable dead 3) Low levels of dust in the house 4) High levels of humidity 5) Low levels of smoke I don't know if yours is defective but I've found there's a lot that can get ours "worked up"...

For short-range target-specific rifles I used to always use a laser pointer. They're cheap and you don't even need to shoulder the rifle to fire. The main thing I didn't like about them is they give your location away. Not always important, but if you're hunting pests at night it can be...

I'm in Canada. I'd probably order everything from the Spanish shop if shipping prices were reasonable. But about a year (?and a half?) ago they changed their shipping rates. Makes purchasing anything from Canada near-infeasible.

Most of the farmers I know would never consider a PCP. Too much maintenance. A farmer in Canada wants something they can throw in an un-heated, uninsulated shed. They want to be able to pick it up in -30c and use it right away. PCPs with all their seals and delicate parts like air tanks...

I keep a carnivorous plant in the house. Before we had the plant we'd always have a fly problem around our compost bucket in the kitchen. After we got the plant, we've had no troubles. Some carnivrous plants are pretty sensitive to how you treat them, the kind of water, etc. But I found a...

What definition of Ballistics Coefficient are you using? Yes, you have told us what inputs you are using, but you have not told us what definition you are using.

I was asking you what definition of ballistic coefficient you are using. This seems like a non-answer.

While I would appreciate a LRF on all my optics except maybe the red dots, as I'm mostly doing pesting, I could certainly imagine some people don't want them. If you want a light-weight optic, you'll usually want to shed the LRF which can add quite a bit. So people that hike a considerable...

Are you using the physics definition of ballistics coefficient? https://en.wikipedia.org/wiki/Ballistic_coefficient If so, there's a clear link, as cross-sectional area is explicitly mentioned in the definition. If the projectile wobbles, that cranks its cross-sectional area up.

I think my dad wrote the first research paper where accellerometers were used on golf clubs, back in the late 80's or early 90's (first international congress of golf in St. Andrews). But I don't think his ones were as sensitive as what we'd need on a barrel. But yes that's what I was...

When Travis does reply to my e-mails it reads as if he's rushed. Often I ask two or three questions, and he replies to only the first one. It's like if he doesn't have a quick and easy answer to a question he ignores it. Which is what I suppose I might do if I was running out of time for...

Does anyone make a light-weight high-frequency motion sensor that would be suitable to mount on a barrel, so that you could measure both the amplitude and frequency of barrel vibration, say, for a PCP air rifle? I'd guess someone has made something for the powderburner market, but I don't know...

I mostly buy from EdgunWest. I'm also in BC. AGS I find difficult to communicate with. Often e-mails are not replied to. Phones not picked-up. If you can order cleanly from their webpage they're very reliable, but any sort of special orders I've found to be difficult. The Spanish Edgun...

I similarly use cantilevered rail extenders for my scopes that have trouble mounting close-enough to my eye. I think I only had to do it for two of my scopes, the "no eye relief" prismatic scope and the Sightmark Wraith Mini. Everything else I have either has a built-in cantilevered mount...

Have you tried doing routine maintenance on the gun? There's a few screws that could go loose -- like if the seal between the barrel and the air reservoir starts getting loose. That could easily cause the problems you're experiencing. I'd watch a tear-down video and then go over the primary...

Taken literally, your question reads a little bit like "what determines the number 5?" The minimum length is whatever it is. Are you asking about the physics it takes to estimate that length? There's a tonne of variables that go into it, like how tight the barrel fits the pellet, the type...

I have two of them. My first one failed after 3 years, but I was abusing the unit, using it to fill SCBA tanks. If you use it for what it was designed for you'll likely get better results. I intend to attempt to repair my first unit, but haven't had the time to tear it open.