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  1. S

    Impact of Bipod on Recoil/spotting hits/misses??

    I find badass being the one warning about short barrel life to be a bit surprising but he is correct. I ran Jay's 338 Edge at CtC and most of the misses were me out to 2100ish. Lower powder capacity but not a hugely different MV than the 33xc. Better barrel life in exchange for marginal loss...
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    338 Caliber Solids - Badlands or Cutting Edge

    There are very few shooters using solids in light gun now. In Conquer the Castle, I'd say less than 20% were using solids based upon the impact marks I was seeing. Bigger than 338 and it is the other way around. The long engraving band of a lead core bullet ends up gimping velocities. Look...
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    Ko1M 2023 Ranking

    Sorry guys. I've been very busy and keeping these updated has been challenging with everything else going on. -Alex
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    Spotting scope camera systems

    Can't help with the alignment of a cell phone camera but one of the things that makes all the difference in the world for then aiming it at the target is the manfrotto Jr. Being able to dial it with no backlash makes life much easier. For some targets at Ko2M I have needed to use a camera on...
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    LR/ELR weekend Oct 21/22 at Arena Training Facility in Blakely GA

    ELR match in VA the weekend after. Might be better for your numbers to move it a bit if possible. -Alex
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    elevation adjustable base suggestion..

    First, will that scope hold up to air guns? Scopes made for rifles frequently get killed by the reverse recoil of an air gun. There is a reason there are specific air rifle scopes out there. Scopes made for larger bore stuff with muzzle brakes will hold up to an air gun though. Not sure...
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    Rifle case choices

    Before the weight and size restrictions came into force I used to fly with my 50 in one of those. The looks on airport security when you walk in carrying a box that says aerial interceptor on the side... Priceless :) -Alex
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    Rifle case choices

    Here you go. Massively oversized for not a stupid price: I use them for my camera system since they are 5" wide and most cases are made too narrow for that. For guns, it means you get a lot of padding around the scope. The plug foam is in two layers and lines up from layer to layer so it...
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    Ko1M 2023 Ranking

    Update for march SPR. -Alex
  10. S

    Adjustable Bag Rider for Stocks

    I probably gave you that look cause I had been machining and printing the bits for the HS-50 so recently. Personally I'm a bag squeezer at heart but with an ABR you can dial all the way down for the last target and build your position and with luck dial for the first target and never have to...
  11. S

    Adjustable Bag Rider for Stocks

    As long as the captive nut doesn't have much vertical play and the posts are in tight holes. It is a pretty stable mechanism. I used shoulder bolts in bronze bearing sleeves when I made one for an HS-50. Only limit is that as soon you have it you start wishing for a longer adjustment range on...
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    Ko1M 2023 Ranking

    Here are the Ko1M rankings for 2023. Matches prior to September of 2019 have been expired. We are raising the number of participants at Ko1M and Ko2M to 150 and dropping the hard cut off at Ko2M. If you see mistakes PM me and I'll get it corrected. -Alex There were some errors on the first...
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    What distance are Ko2M guns zeroed at?

    I agree that it will remain a niche. There are real barriers to entry in terms of cost but beyond that, the requirements for different skill sets is probably actually harder. You need good shooting fundamentals, good reloading skills, good understanding of exterior ballistics and at some...
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    Recommended Scope set up for 3500 Yard Shot

    I think the adjustable mounts are best left on smaller calibers. Big guns kill them. From what I've seen they work fine up until they shit the bed. Would love for there to be one that holds up under higher recoil forces but I've yet to see one. -Alex
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    What distance are Ko2M guns zeroed at?

    Many people have angled rails that preclude a 100 yard zero entirely but close up can be done on the reticle if needed. The higher power guns can do the first to the last target on internal adjustment alone given enough slope on the rail so those guys guys are zeroing at 1000 yards or beyond...
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    Tuners in question ?

    Coefficient of Inbreeding? In any data set where you have a bunch of measurements that you average together, you can also kick out SD and generate the CI for that data point. Think of it as the visual equivalent of a T-test. -Alex
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    Tuners in question ?

    error bars per data point show the (usually) 95% confidence interval. When comparing data like this they are good to demonstrate that the difference is real. When the error bars for two data sets overlap then it is a good sign that the differences may not be real. -Alex
  18. S

    Tuners in question ?

    I actually did say reduces amplitude. I don't see a physics mechanism that would cause it to increase amplitude other than chance constructive interference by causing different harmonics to overlap. Even then, the additional mass would probably overcome even that. You mentioned having the...
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    Tuners in question ?

    So, I can only talk to the physics of harmonics within constraints but I think there is a broad misconception that would probably be worth addressing. There is not a single harmonic in a barrel when a shot is fired and it isn't in a single plane. The base harmonic frequency of a barrel is...
  20. S

    Tuners in question ?

    Yeah, I guess you could go with a pencil barrel and get a lot out of a light tuner. I'd assume that the amplitude goes up as the barrel gets thinner though. If you were just correcting one harmonic then why not but you are really averaging out a few. Would be an interesting experiment with...
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