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  1. J

    22 accuracy expectations ?

    LR, I am compulsive about 50 consecutive shots at a time. Not many are. I am so focused, that it feels wrong if unable to complete the box. Rimfire is how I warm up before setting up the F-Class 223 on the bench or mat. Same skill set for both, but my handloads are quite a bit more consistent. ;)
  2. J

    22 accuracy expectations ?

    No argument doc, if I had access to a 100 yard tunnel, that'd be where I'd spend my time testing ammunition. But folk's have to work with what they have. I have access to outdoor 50, 100 and 200 yards, that's what I use.
  3. J

    22 accuracy expectations ?

    Hey LR, F-Class Sinclair bipod, rear bag, off the bench. Single fed cartridges, 50 shots across a chrony each time. 100 and 200 yards to compare results and spread. I found that averaging groups hid problems. Building 50 shot aggregates was time consuming. Cartridge quality comparison was...
  4. J

    22 accuracy expectations ?

    I prefer to determine results for myself. That way I avoid ego driven responses obfuscating the facts. If you want to see what actually occurs at 100 yards, take the time to send an entire box at a single aim point. The 50 shot sample size is large enough to eliminate random acts of accuracy...
  5. J

    Unertl/52 Project

    Dayum RT! Just dayum! I'll wander around in the morning woods with my antique, well worn Marlin 60, no way I could handle the possibility of damage to such a classic setup. :oops:
  6. J

    New Lilja Barrel for CZ457 MTR

    Midas+ SK Biathlon Sport X-Act Lapua Long Range (both versions) Tenex RWS R50 and R100 Fiocchi 300 and 320 Some batches are better than others. Lot numbers are important. Even the best labels can have problems. It is an assembly line lottery.
  7. J

    Rimfire accuracy affected by rim thickness

    I had a problem with measuring strike depths. The thickness of the brass that forms the rim varies also. During the cupping and heading process, brass is stretched and shaped and the machine tolerances along with the properties of the brass being used can produce rims/heads/case walls that are...
  8. J

    Rimfire accuracy affected by rim thickness

    I hear ya' Lee. I can see lot selection being critical not only by cartridge uniformity, but by the uniformity of the muzzle velocities and how the average mv fits the exit timing/barrel harmonics. If you can find high quality cartridges, with a minimum of factory defects, could dimension...
  9. J

    Rimfire accuracy affected by rim thickness

    Hey Lee, F-Class 223. H322, Lapua brass, Hornady ELD 73 grain at 0.016 off the lands. I get that bullet jump is a thing with centerfire. I've found that engraving 22lr produced my best results. I also found that I have to get everything else right or my results aren't good enough for...
  10. J

    Rimfire accuracy affected by rim thickness

    My issue with the sorting of rimfire by any measurement is that we are attempting to solve a multivariable equation by quantifying a single variable. It just doesn't work. Given that: A + B + C + D + E = X If A = 1, but no idea what B, C, D and E are you can't determine what X is, can you...
  11. J

    Calculating MOA from 9 targets, one shot on each?

    Using Mark I eyeball, top left and middle bull produce y'er ES. Based on the 1 inch ring, looks like a 3/4 inch spread giving a 1.5 moa group at 50 yards.
  12. J

    Rimfire accuracy affected by rim thickness

    If it makes you happy, enjoy y'erself. If you expect sorting by weight or different cartridge dimensions, to improve results on target, you likely are an optimist. Which portion of the rim do you measure? The part where the firing pin impacts, correct? Do you think the rim is the same thickness...
  13. J

    The whole box at 100 yards

    RT, I won't tell anyone what or how either, unless asked. If someone makes the claim "all day long" then I expect them to back it up, every time. As my gramps said after listening to me brag about the amazing accuracy of my first 22, "Don't talk about it boy, show me." Learned right quick...
  14. J

    The whole box at 100 yards

    Yeah RT, folks still use that phrase. There's something about the anonymity of the internet that allows them to think they won't get flamed for it...
  15. J

    The whole box at 100 yards

    Hey chilly, lead deposits became a problem. With a freshly cleaned bore, accuracy is similar, but by the end of a full box of no-lube cartridges lead deposits are visible (borescope) the length of the bore. Lubrication is necessary to minimize the accretion of lead and lengthen the intervals...
  16. J

    .22LR and transonic zone

    The 22lr is not affected by supersonic transition as much as the internet claims. It causes only about 2 degrees of yaw with the 40 grain round nose 22lr. That's about 0.008 inch of wobble on a 0.47 inch long bullet. Think about it...if transition was such a problem, shouldn't it destabilize...
  17. J

    The effects of the transition from super to sub sonic on the 22lr

    I have. Transition effects cause less than 2 degrees of yaw with a 40 grain 22lr. On a 0.47 inch long bullet, that's about 0.008 inches of wobble. Not enough to affect the trajectory, when compared to the yaw caused by out of balance / factory damaged bullets. In order to produce a useful...
  18. J

    Better .22 ammo?

    I hear ya' H. I use rimfire at 200 yards to warm up, before setting up my F-Class 223. I accept the limitations of the 22lr, work out the yips and diagnose the current conditions before sending my 223 handloads. Rimfire is cheap compared to my centerfire cartridges. I expect strays from rimfire...
  19. J

    Better .22 ammo?

    What to do to improve accuracy with rimfire? :unsure: No need to spend an exorbitant amount of money or time in research and development. Why? There's already a technique available to accomplish it. Stop trying to use the cartridges at distances they aren't intended for. The closer you are to...
  20. J

    1/2 MOA at 100 yards, all day, every day!

    Center of hole on the moa circle is acceptable JG. I have yet to produce a 25 shot target at 100 yards, with any caliber rimfire cartridge, that keeps all the shots in the scoring zone. Wind judgement and ammo quality kick my butt. Doesn't stop me from trying.
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