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  1. J

    RimX firing pin channel marking next round

    Gotcha...
  2. J

    RimX firing pin channel marking next round

    Are you sure it's the bolt? The marks are typical of most magazine fed 22lr. The top bullet, as it is pushed from the magazine into the chamber, scrapes across the cartridge below it leaving drag marks. The stiffer the magazine spring, the harder the bottom cartridges press on the cartridge...
  3. J

    Whats a "good" 100 yard group size?

    You got it 308.
  4. J

    Whats a "good" 100 yard group size?

    Do I understand? Yep. Does shooting groups indicate that I'm controlling the placement of the shot? No. It indicates that for those 5 or 10 shots, conditions and trajectories were similar, or not. When each group shifts location relative to point of aim, and the total aggregate size is...
  5. J

    Whats a "good" 100 yard group size?

    @DownhillFromHere Red centers are an easy change for my cadd software
  6. J

    Whats a "good" 100 yard group size?

    If you want some cheap entertainment, try this target at 100 yards. Click on the pop-out at the top right corner of the image for the download option. Download pdf, open, print full size (100%) 8.5"x11" (letter) 10 inch dimension check at left side border. 1 shot sent to each bull. See if...
  7. J

    Whats a "good" 100 yard group size?

    Y'er right hoser, just another opinion as are all the rest. Groups are easy....no thinking about wind changes over time. Time from first shot to last in 5 shots, minimal. Shooting for score? 30 minutes, or more, to make 50 shots. Conditions shift during that extended interval. That's why...
  8. J

    What You Aimed at Part 3

    It's the conditions, yeah, that's the ticket. ;)
  9. J

    Whats a "good" 100 yard group size?

    I have a problem with groups. They lie to me. Made me think I was doing better than I was. Look, sub moa 5 shot clusters all over the target. I am bad to the bone and nation wide....Not! I use OnTarget software to measure group size. Part of the software analysis is distance from group center...
  10. J

    Whats a "good" 100 yard group size?

    I used to think that, M. I can shoot sub moa groups at 50, 100 and 200 yards with rimfire. Group size had me thinking I had it all figured out. It wasn't until I tried shooting for score, that I learned I was wrong. :(
  11. J

    Whats a "good" 100 yard group size?

    At 100 yards with 22lr... Anything that impacts within 3/4 inch of point of aim is good. Anything that hits within 1/2 inch of point of aim is excellent. Anything that hits within 1/4 inch as unusual. Punching center is unlikely. Groups don't mean anything, if you can't hit what you aim at...
  12. J

    Failure to fire Eley Ammo in V22

    Easy answer...take some pliers and pull the bullets, empty on a paper towel. If there is no primer visible in the brass, it's an Eley problem. If the primer is visible in the powder but missing from portions of the rim, it's a handling/shipping problem. Those large green flakes mixed in with...
  13. J

    Are the fast twist barrels a thing of the past?

    Hey Carbon, if I could find quality 22lr that produced consistent accuracy, I'd give up reloading centerfire and sell my 223 F-Class. Currently I shoot 22lr to warm up before breaking out the 223. Work out the yips and learn the range conditions before sending the handloads.
  14. J

    Are the fast twist barrels a thing of the past?

    I hear ya' hoyt. I'd still like to see all 50 shots at a single aim point. The best 100 yard 50 shot group I've seen with 22lr was 0.85 inch. The best 200 yard 50 shot group was 3 inches. I would be interested in seeing if a fast twist could better those results. Assuming someone could obtain...
  15. J

    Are the fast twist barrels a thing of the past?

    It'd be interesting to see results with 22lr from a fast twist barrel, indoors, from a fixture, 100 yards, 50 shots at a single aim point. I figure at that distance the group spread would be educational. No wind, no skill, just barrel and cartridge quality affecting trajectories. Double the...
  16. J

    Chrony data question

    Even rimfire has to obey the laws of physics, right? :D Suppose you could simplify the variables involved? Each theoretical barrel gets a different length, coefficient of friction. Each cartridge has a set chamber pressure and bullet weight. Input the variables into the basic formulas for...
  17. J

    Chrony data question

    I don't know...and I don't have a method to determine the answer. :( There is likely a mathematical way to calculate the answer. https://www.researchgate.net/figure/Muzzle-energy-vs-powder-charge-as-predicted-by-QuickLOAD-V36-for-H4895-and-the-60-grain_fig4_277790998...
  18. J

    Chrony data question

    30 minute drive, plenty of time to overthink. :D I fear this is "If a rooster laid an egg on the peak of the roof, wind blowing northwest, earth is rotating east, which way would the egg roll?" question. Roosters don't lay eggs and there are no identical boxes of cartridges. ;)
  19. J

    Chrony data question

    I thought about this on the drive home this evening. Identical cartridges in mechanically correct actions. From a fixture in a tunnel with controlled conditions, the only difference being the barrels. The chambers, leades, rifling, lengths, bore diameters would vary. The coefficient of friction...
  20. J

    MOA at 100 yards is it possible with a 22lr?

    I asked about consistent submoa at 100 yards with rimfire a while back. The results aren't what I'd hoped for, but were what I expected. ;) https://www.snipershide.com/shooting/threads/the-whole-box-at-100-yards.7033547/
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