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  1. G

    Production Rimfire Rifles with CIP bores/chambers in the US (Especially semi-autos)?

    Firearms made in countries that are members of Commission internationale permanente pour l'épreuve des armes à feu portatives ("Permanent International Commission for the Proof of Small Arms" – commonly abbreviated as C.I.P.) adhere to CIP specifications. Among those members are Austria...
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    MOA at 100 yards is it possible with a 22lr?

    MOA at 100? Ten shot groups that average under one inch are possible with decent ammo, a good rifle, and good conditions or wind reading.
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    10/22 - groups now opening up drastically between 90 and 95 yards?

    There may be a couple things that can be helpful to keep in mind as this problem is considered. First, no one can shoot or test the same rounds of ammo in five yard increments. That is to say, each test uses different rounds. Different rounds may give different results than previous ones...
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    Show us your 0.0XX" 5 shot groups - .22 groups at 50 yards

    It's curious that you take issue and it seems no one should dispute you when you say math wasn't your best subject. The bullet's actual diameter is irrelevant when its hole in the paper isn't identical. Using something like aluminum foil might yield bullet holes the same size as the bullet...
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    Show us your 0.0XX" 5 shot groups - .22 groups at 50 yards

    Indeed. No one should be so lacking in judgement as to post one. That should cause wonder as to how it would be possible. __________________________ To elaborate for anyone who may misunderstand, however, here's how it may be possible. Assume it's possible to shoot what's truly a one-hole...
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    Show us your 0.0XX" 5 shot groups - .22 groups at 50 yards

    Keep in mind that a .22LR bullet hole in a paper target is invariably less than the bullet's diameter. It's actual size will depend on the nature of the paper itself. For example, in the paper used on the target below, the bullet hole is .205". In fact, when using .223" as the size to...
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    Does anyone recognize this trigger

    Depending on the age of the rifle, it appears to be either a 1407-U9, as Lee says, or the very similar but older 1404-U8. The trigger blade may be factory but this version isn't often seen, except on older models from early in the life of the match 54 single shot rifles.
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    Best tuner arrangement?

    Defender32, thanks for that explanation. I suppose for clarity I should have asked earlier what distance the target shown in post #21 was shot. Initially I thought it may have been 50 yards as that's usually a more reliable distance at which to tune. It must be 100. Given the size of the...
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    Best tuner arrangement?

    What do groups with the same number of shots with this same lot of ammo look like without the tuner? Are the bullet holes consistent, that is always or touching or nearly so or is there as much paper between them as shown in some of the tuner groups?
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    Best tuner arrangement?

    I'm thinking the target shows results of two or more shots at different settings, presumably settings that are incremental. At the risk of missing the obvious, what does this target show? Is one or more of the settings showing the correct tuner setting? If so, is it repeatable?
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    Best tuner arrangement?

    I understand the comment was rhetorical, one that doesn't require an answer. But it probably wouldn't be shocking if a significant number of those trying tuners are doing so because they are unsatisfied with the performance of inconsistent ammo. The hope is that a tuner will solve that...
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    Best tuner arrangement?

    For what it's worth, the shooters with the longest and most experience with tuners -- RFBR shooters -- use clamp on tuners and rarely, if ever, have threaded muzzles. Also, keep in mind most rimfire benchrest barrels are typically a little longer than 22" because barrels that are shorter are...
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    SK vs Lapua ammo lube

    The lube is the same or so very nearly the same that they season the barrel similarly. A lot of shooters use SK to season for Lapua because the SK is relatively inexpensive. POI differences between a few rounds are often the result of the inevitable variation between individual rounds --...
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    What 22lr ammo should I be looking at?

    For what it's worth, while many smiths may set headspace to a customer's reasonable and safe wishes, a lot of very experienced .22LR rifle builders (and shooters) set headspace at .043", which is also the specs set by both SAAMI and CIP. The consensus seems to be that shorter headspace doesn't...
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    Lapua X-Act

    Rely on what is seen on target rather than what the chronograph says. A small ES is not necessarily a good predictor of ammo performance. There are factors other than MV variation that can influence performance downrange. Ten shot strings don't give reliable information. It's more useful...
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    22 group size bragging thread

    Perhaps the wind can fortuitously blow shots together, but I don't know about that. It's absolutely correct that a single group means nothing, or very nearly next to nothing. More than one group or a few begin to be suggestive. Consecutively shot groups tell a little more. But no one is...
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    22 group size bragging thread

    This ten-shot group at 100 was produced three days ago on June 23, 2023. Outside edge-to-outside edge size is .665" (16.6mm). The next best ten-shot group that morning was .886" outside-to-outside.
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    New Lapua Long Range and Super Long Range (Announced)

    It's conceivable that they are in the end repackaged CX and M+. But that leaves a question. Riddle me this: if Lapua recently decided to repackage lots of CX and M+ that was "too fast" -- what did they do with these same kinds of lots before the advent of SLR and LR? Did they sell them as...
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    New Lapua Long Range and Super Long Range (Announced)

    That's a rather narrow definition. Lapua's fraud would be claiming SLR and LR is a new 1106 fps variety when it's not new and nothing more than an old brand repackaged as something else. Whatever MV resulting from conditions means aside, MV is something that can be purposefully part of a...
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    New Lapua Long Range and Super Long Range (Announced)

    Seriously? The claim means Lapua is perpetrating marketing fraud. A number of posts in this thread show chrony figures that contradict the claim that SLR and LR is simply CX repackaged. Lapua makes other varieties of ammo that are nominally 1106 fps. So, too, does SK-- but on the SK...
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