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Umbrarian

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Posts posted by Umbrarian

  1. 9 hours ago, JWBaldree said:

     got a little upset because that inconsistency didn't work out for you.

    Option A: get DQ'ed as soon as it happens.

    Option B: get DQ'ed as stage is over.

     

    Either way he is DQ'ed, dont see how the "inconsistency" could have worked out for him. Seemed to me he was just asking if rules require it to be immediate so they run their match correctly.

  2. 20 minutes ago, BentAero said:

    Many clubs that host SCSA matches never run Outer Limits (or Speed Option) because they don't have bays deep enough to do so.

    Why don't these clubs have higher than normal percentages of physically challenged shooters that are happy about that fact?

    If they never run OL, those who are physically challenged should be flocking to those matches.

    I'm not seeing that happen.

     

     

    They do were I am.

  3. On 2/21/2022 at 9:56 AM, Darqusoull13 said:

    I'm strongly against this one. Dropping the only stage with movement and the two "long" shot stages would be significantly skew the classification numbers. 

     

    You can already get classified without shooting OL/SO, so nothing would be dropped. If I read it right, he was saying requiring 6 stages (instead of the current 4) to get a classification.

  4. 1 minute ago, AR_James said:

    I have heard from a source I trust, that the Area 4 SC match will be at Old Fort Gun Club outside of Fort Smith, AR.  First or second weekend of October, probably Oct. 8th/9th weekend.  

     

    LOL because there are not enough matches and other things scheduled in Late September/October.

  5. 11 minutes ago, ltdmstr said:

     

     

    Looking forward to the statement from USPSA saying that it's ok to bring your LCMs to Colorado for the match.

     

    No they do not have to do that.

     

    But they opened up this can of worms, so the least they could do is clarify what the rules are for this match wrt to magazines, so everybody can make an informed decision.

  6. Is breaking the law to get a competitive advantage unsportmanlike? Does law breaking bring the sport into disrepute?

     

    10.6

    Match Disqualification – Unsportsmanlike Conduct

    10.6.1

    Competitors will be disqualified from a match for conduct which a Range Officer deems to be unsportsmanlike. Examples of unsportsmanlike conduct include, but are not limited to, cheating, dishonesty, failing to comply with the reasonable directions of a Match Official, or any behavior likely to bring the sport into disrepute. The Range Master must be notified as soon as possible.

  7. 15 minutes ago, twodownzero said:

    It is utterly irresponsible for USPSA to have scheduled the nationals in a state with a magazine capacity limit.  IDPA is a different story--every part of that game can be shot with 10 round magazines in every division.


    Agreed. 
     

    They really did not think through the optics of    having a National shooting organization openly flaunting the law. Nor the possibility the Gov/AG could force the issue with a surprise and mass arrest. 
     

    We brush off claims NRA is a terrorist organization, but when they claim USPSA is a criminal organization that does not respect the law, well that will stick.  
     

    Also of interest is how sponsors and sponsored shooters will react. Often those contracts have moral contracts, and not breaking the law is part of it. 
     

    Most recall when Glock flush their entire team due to underage drinking even though there were no arrests. 

  8. 9 hours ago, Stafford said:

    Trying to wrap my head around this concept. FYI, I don't reload and shoot factory ammo. Yesterday, I shot Federal Syntech Action pistol 9mm 124 grain red bullet. It averages around 1050 with a power factor of around 130. Good ammo, accurate. Then there is the Federal Syntech Training ammo with the purple bullets. The 147 has a published velocity of 1000. 

     

    So, the power factor will be much higher -147, but I'm guessing that it should recoil slightly less than the 124 due to lower velocity. Is that correct? I thought PF correlated with recoil.

     

    Have not shot the 147, but have shot the 124 and 150. I chrono'd both on a PCC and several Glocks (17 & 34) and they have very similar PFs, in the 130s.

  9. 2 hours ago, JGus said:

    I've shot USPSA for several years, and been shooting CO since it's inception. Probably going to get into Steel Challenge matches soon at a local range.  I'm running a DPP 7.5 moa in CO.  But on occasion when a stage has distant steel, it covers almost the entire target.  So I know 7.5 moa is too large for Steel Challenge.  I'm thinking 2.5 moa?

     

    What are your thoughts on the optimal red dot moa for steel?

     

    Thanks.

    7.5 covers 7.5 inches at 100 yards. So mathematically it cannot cover any plate in SC, not even close. Maybe your RDS is out of spec or too bright and is blooming?

     

    Anyway I run a 6 on pistol and have a 12 for pcc and it works fine.

  10. 21 hours ago, SGT_Schultz said:

     

    More to the point, kinetic energy (which is what a recoiling pistol imparts on your hands) is mass times the square of the velocity of the mass.

     

     

     

    Yes since "recoil" is not part of classical Newtonian physics, there is more ways to define than just Newtons - N (Raw Force),  N*s (impulse), velocity (m/s), joules (energy). I usually go with "Recoil Force", measured in Newtons, but "Recoil Energy" measured in ft-lbs or joules is also fine.

  11. 8 hours ago, Tango said:

    No, recoil is momentum. No, supersonic bullets create a supersonic shock wave, subsonics don't do that. I agree though, generally the total energy (i.e. powder) is a better measure of "felt recoil". 

    Not according to Isaac Newton, who discovered it. Recoil is exactly Newton's 2nd & 3rd Laws in action. I think your misunderstanding here is that recoil is an example of momentum being conserved, but it is not momentum itself. Newton's 3rd law relies on conservation of momentum to work.

     

    Correct, supersonic bullets can create shock waves, and subsonic dont, but that was not what you asked/said "What I believe happens is that because the 115 grain bullet is actually supersonic, it creates blast". So no, it does not create blast or more blast or have anything to do with blast.

     

  12. On 6/22/2021 at 8:38 PM, Tango said:

    When I was a beginner and shooting only factory ammo, I was told to stay away from lighter bullet weights like 115gr, and use 147gr because heavier rounds would recoil lighter. My experience confirmed this: 147gr rounds felt better and easier to control. Physics, however, tells us that recoil is momentum, and a heavier bullet at the same speed would generate larger recoil. So I compared momentum of a typical factory ammo like Speer lawman, at 115 and 147 grains. Based on factory specs, the momentum of the 147gr is actually larger than the 115gr, but by only about 5%. I do not think anybody can notice this difference in their hand, but even if they do, the heavier bullet should recoil more. This is contrary to what people feel. What I believe happens is that because the 115 grain bullet is actually supersonic, it creates blast that makes it feel more "snappy" vs. 147 grain is subsonic and doesnt create the same shock wave and the perceived snappiness. 

    No, recoil is Force (F=ma), not momentum (p=mv).

     

    Unless you are shooting a revolver, what you feel is also a result of the Recoil Spring absorbing energy.

     

    Supersonic bullets do not create more blast. 115 seem to have more blast over 147 as more powder is used.

  13. 15 hours ago, Edwards30 said:

    So if I read it correctly, you buy the trigger at $150 and then send it to him for the $250 service. Is that right?

     

    I am currently using the tactical trigger at about 4.25lbs. I wouldn’t mind lighter but would have to see how the feel changes I guess. 

     

    Yes it is the $250 service on his website.

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