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Heath

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About Heath

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    Finally read the FAQs
  • Birthday 03/22/1972

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    halbritt
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    San Jose, CA
  1. Older style frames had one pin. The newer style frames have two pins. I'm pretty sure that this is the case for all the small-frame Glocks. Ejectors are certainly different and a new one is definitely required for the conversion. Using a 9mm ejector on a .40 might be a bit dangerous as the ejector could strike the primer. I know the firing pins are marked for their specific cartridge, but I don't know if there is any real difference between them.
  2. I found an article on Brownell's site that refers to the benefits of cryogenic stress relief in tooling: http://www.brownells.com/aspx/NS/GunTech/N...x?p=0&t=1&i=478 It's an interesting read. Apparently, cryo-treatment can produce some amazing results on the wear resistance of tool steels.
  3. Heath

    Wobble

    Truly a Freudian slip there, we know what you meant. <{POST_SNAPBACK}> Oops. That was exactly how I felt after my performance in the last match.
  4. I'm not making the contention that cryo-treating has no discernable effect, just that it isn't particularly beneficial to accuracy in rifle barrels. Certainly, further stresses are relieved and it is more beneficial in other applications as GuildSF4 describes. Lilja mentions that it increases the useful life of the barrel somewhat, which could be beneficial, depending on the cost of the treatment. He also mentions that it improves machinability for some reason that isn't well understood. This point bothers me as it seems like it would be a simple matter to examine the crystalline structure of the metal pre and post cryo treatment and draw some conclusion about the differences. As Eric stated, though. It wouldn't be difficult to qualify the benefits using scientific methods. I don't believe that anyone has done this to date.
  5. Any shift in POI from POA is a reduction of accuracy. Based on Lilja's article and as I understand it, barrels with residual stresses as a result of being button-rifled can be more prone to POI shifting due to heat. This is why Lilja and others using button rifling heat treat and stress-relieve barrels after rifling. Production barrels are cold-forged and have broach-cut rifling. These processes apparently do not build up significant residual stress and can be heat-treated anywhere along the process. Further, Lilja writes, "We have been told by a knowledgeable metallurgist that the deep cold treatment will, at best, remove up to 6% of the remaining stresses in the type of steel used for rifle barrels." If this is the case and the rifle does suffer from POI-shift do to residual stresses, then cryo-treating isn't going to completely solve the problem. I am disinclined to believe that any kind of wonder process is going to improve accuracy without having seen significant research on the subject. The firearms industry is full of snake oil salesmen.
  6. Dan Lilja has some opinions on the cryogenic stress relief of barrels here: http://www.riflebarrels.com/faq_lilja_rifl...m#deepcryogenic The short version is that it can't hurt, but that there aren't significant noticeable benefits to accuracy.
  7. Even if she had an IFR rating, I'm pretty sure that her aircraft isn't certificated for IFR conditions given that it lacks the necessary avionics.
  8. Heath

    Wobble

    Thanks for the tips. I just read a description of what is happening on Matt Burkett's site under tips on recoil control. Tension is actually building in my strong hand while I'm shooting. I'm just going to have to do much more live fire practice to overcome this.
  9. I've got the Wolff competition spring pack in my G35 and a 15Lb ISMI recoil spring and have no problems at all.
  10. Though it's no shortcoming in your product, which is awesome, after having used both, I prefer the texture of the 3M stuff. However, I suspect that there aren't many people that share my preference.
  11. Heath

    Wobble

    I started shooting seriously in April of this year. Initially, went through about 3k rounds a month and improved pretty quickly. I took some time off last month and now my skills have dropped significantly. One problem that I'm having is breaking the second shot on a controlled pair. I've been shooting fairly inaccurately lately and think I've discovered why. I can track the sights just fine, and try to break the shot as the front sight settles into the notch. However, I've noticed that there is a significant amount of side-to-side wobble as the front sight settles back down. To get a hit with the second shit, I have to wait a long time for the movement to stop. I suspect that I may be over-gripping the gun and trying to fight the recoil. I'd be interested to know of any kind of drills or practice regimes that I could utilize to eliminate this problem and improve accuracy overall. I can't come up with a quick solution other than to shoot more and at longer ranges.
  12. Precision Delta sells 180gr jacketed for $62.50/1000 shipped, which is a pretty good deal. http://www.precisiondelta.com/ I haven't used them, but other folks on the board have. A search will yield some reviews. What powders are better than TG for 200gr bullets?
  13. Heath

    9mm Vs 40mm

    You can buy more accuracy. It requires an investment in ammunition, and given that 9mm is cheaper than .40S&W, that's what I'd recommend. However, since you already own a G23, it might payoff more to just use what you have and save the money to buy ammo.
  14. Heath

    Coke Zero

    I'm a fan of plain old Coke with plain old whisky in a glass as well. Lately, I'm starting to lean more towards just the whisky and the glass, though. I must be getting old, because I remember when I thought the taste of single-malt was one of the worst things imaginable.
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