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Blackstone45

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Everything posted by Blackstone45

  1. Bumping to share some 9mm load data that may be of more interest to European shooters (due to the bullet used) Powder: Vectan Ba 9 1/2 Primer: Magtech SPP Case: Mostly CBC (Magtech) with some S&B OAL: 1.07-1.08" (can't seem to get very consistent OAL) Bullet: Ares 9mm polymer coated 125gr conical nose (RNCNBB CEPRX) Data below is preliminary based on only 5 rounds per charge weight. 3.8gr: Average velocity 1026fps, 128 PF 4.0gr: Average velocity 1049fps, 131 PF 4.2gr: Average velocity 1091fps, 136 PF Based on this, I'm
  2. After using a sharpie to mark the cartridge, I've determined that it's the bulge in the case where the base of the bullet is seated that's causing it to fail the plunk test. My original loads that worked well use 124gr TMJ round nose Frontier bullets with a .355 diameter. The polymer round nose, and TMJ flat nose bullets that don't pass the plunk test have .356 diameter.
  3. I tested in my SIG P210 barrel with the same results. Assuming that the P210 has a "normal" leade as compared to CZ barrels, it must be the case bulging around the seated bullet that's causing the issue.
  4. I guess my question is, can it be factors outside of the bullet that affect the plunk test. For example, the bulge in the case after seating the bullet? Yes, I tested all three rounds at the same time on the same barrel
  5. This description of the issue is rather long, so please bear with me. My gun is a CZ 75 SP-01 Shadow. The first rounds I loaded were 124gr copper jacketed round nose 9mm Frontier bullets made, with OAL of around 1.13"; these pass the plunk test perfectly, they drop into the chamber and drop back out without issues. They also spin freely in the chamber. I still have around 60 of these loaded rounds. I then made the decision to change to 125gr polymer coated round nose bullets made by Ares, also with OAL around 1.13". I loaded a few to chrono, they all cycled fine and vel
  6. The current Handgun rulebook permits aftermarket springs. Appendix D4, 18.4 Unless the DPM is still disqualified because the whole guide rod system is also aftermarket
  7. Having trouble finding a reduced strength spring on the internet. All the results I'm getting are for the DPM spring.
  8. My friend has been having trouble with his Walther Q5. The gun sometimes doesn't fully eject a case, causing a jam. It also often doesn't lock back on the last round. It locks back every time when the slide is racked with an empty magazine. Based on those two issues, I would say it's caused by the slide not going all the way to the rear during recoil. It's not a problem with ammunition, as it also occurs with full power factory ammo. So could it be an issue with the recoil spring?
  9. Thanks for sharing. I ordered a set of three a few weeks ago, but aren't being particularly rough with them yet.
  10. In my mind, DQs for unsafe gun handling are there for safety reasons, not to catch shooters out. So DQs should only be handed out when the RO is absolutely certain there was a violation.
  11. I shoot a SP-01 Shadow, currently fitted with a 11lb recoil spring and a stainless steel guiderod, both by Eemanntech. I usually shoot 130PF 9mm homeloads, but occasionally I find a good deal on factory ammo and use it as practice ammo. I chrono'd the factory ammo and it comes out at around 138PF. I'm wondering if it makes any sense to change to a heavier recoil spring for the factory loads? Is the PF difference big enough to justify it?
  12. I hope to visit the factory in October (assuming no quarantine restrictions) and will ask the owner.
  13. @KommBat I'm also interested to know about the recoil spring, what the factory weight is, and if you changed your's? And whether the springs are interchangeable with CZ springs?
  14. Yep, and it messed me up when I had to shoot a club Glock competition (so Glocks only). On multiple instances ran the gun dry without realising because the slide didn't lock back (thumb was riding the slide release).
  15. Agreed, it's important to recognise the second sight picture so you can call whether you need a makeup shot, and whether you need to adjust your grip because the gun isn't returning to the original position. I don't think it's possible, with PF >125 ammo, to get a good Bill Drill time if you're confirming each sight picture before taking the shot. I've also been playing with relaxing the shooting hand more, and it really has helped cut down on the amount of trigger jerking.
  16. My understanding though, is that eventually that is the stage you want to be at? Where you aren't waiting to confirm the sight picture before you squeeze off the next shot? I think this is what you mean by predictive, as opposed to reactive shooting?
  17. Shot some more doubles on Saturday. I used a bit more forward lean stance-wise, and made a conscious effort to crush more with my support hand and loosen a bit with my dominant hand. Couldn't measure splits because I was on a line with 5 other shooters, but at 10m, I was making consistent A-zone hits with at least 0.30 splits.
  18. Hi KommBat, I shoot at ASL twice a year (before Coronavirus) with UK shooters. I have already bought one Redback, and am getting a second. The moment I disassembled one, and the slide glided off like butter, I knew these were the finest quality guns (even better than the original Sphinxes 2000/3000s!) I also have a CZ Shadow 1, so have access to CZ parts. I might get the -10% CZ trigger spring - is it easy to install? Or perhaps I can ask Lee if they can reduce the trigger weight for me.
  19. While doing doubles drills, I noticed that there is a bit of a delay at the "peak" of my sights lifting, before they start to go back down. Now, the sights do seem to settle back into alignment on their own, without any (conscious) input on my part. I'm just wondering if this delay is normal. It feels as if I fire, the sights lift, there's a pause at the top, then this invisible force pushes the gun back down. I guess I'll need to ask someone to take a slowmo video next time I'm at the range, which might show things more clearly. It also feels like during recoil, my entire arm is lifting, but
  20. He's got a new Youtube channel with Joel Park, not many videos yet and not sure what the main theme of the videos will be https://www.youtube.com/channel/UCWTsUCBvcfParIuopovOzQg
  21. Yeah most of the brass I pick up is newly fired factory magtech, that could be it.
  22. I'm finding "return stroke" of the case mouth expanding step requires a lot of force. So after the mouth has been expanded and I'm lowering the ram, the case seems to get stuck when the now-expanded neck is trying to exit the expanding die. It requires quite a bit of force get past this. Is this normal? I'm using a Lee single stage press, with Lee carbide dies, loading 9mm. I don't tumble my brass, just give them a good wash.
  23. First get confident that you can pull the trigger in DA quickly and without disturbing the sight alignment. A good dry fire drill I use for this is to use a shot-timer. Bring the gun up on your dryfire target with your finger on the DA trigger. When you hear the beep, pull the trigger straight back without disturbing the sight alignment. The goal is to be able to pull it so fast that the hammer drops before the starting beep ends.
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