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About wally720

  • Rank
    Looks for Range
  • Birthday 11/06/1956

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  • Interests
    guns and guitars
  • Real Name
    Mike Wallace
  1. The volume displacement with water is interesting. Hadn't thought of it like that. Hope I didn't come off sounding like a jerk, TonyK. I've been accused of over thinking things.. Lol.. So be it. I don't think it's good to blindly follow the manuals and not have an understanding of how things work. Even more so when you start adjusting COLs to fit your gun. I'd hate to see someone make a mistake either from carelessness or lack of knowledge.
  2. Specific gravity is irrelevant. http://www.nosler.com/9mm-luger-parabellum lists the actual EMPTY case volume in gr of water. They do also list load density of the powder, in percent volume of the case after the bullet has been seated, for each powder type and charge they have tested. Some of those powders don't fill the case and some are compressed. It was interesting to read that. You can look up the dimensions of different bullets and do the math, but if you seat a 115 and 124 gr bullet to the same COL (as an example: both RNs from same manufacturer), there is a .047 cubic inch change in
  3. That's exactly the problem I had with Xtreme FNs. Data says COL should be one thing. They hit the rifling in my XDm so I shortened them to 1.084 after also decreasing powder charge some. Accuracy, for whatever reason, just wasn't acceptable to me. I ended up loading them all with 4.0 titegroup and shoot them through my glock, which loves them. Gone back to round nose for the XDm and trying 124 gr plated from Rocky mountain reloading. They are loaded to jacketed velocity.
  4. Final results: 4.0 gr titegroup gave fantastic grouping in my G26. After trying two other powders, it seems the XDm just doesn't like this bullet much. Going back to round nosed.
  5. Yes, exactly, Mstang. It takes dropping the col below 1.085 in my XDm to get the cartridge to freely turn in the chamber.
  6. And its hard to tell if your post uploads on this phone, so sorry for redundancy
  7. They are actually conical nosed bullets. I tested a few different lengths with the drop and spin test in my two 9mm barrels and pretty much settled on 1.080. I'll make up several powder charges and hopefully test tomorrow.
  8. Actually I set up my press today and tested a couple different lengths in my two 9mm barrels (no powder or primer) doing the drop and spin test, and in think I'm settling on 1.080-1.083. The bullets are conical nosed. I'll make 4 or 5 test powder charges and test them hopefully tomorrow.
  9. Thanks for the advice, guys. I've run across some data and found some pretty short oals, so with that and what y'all have posted, I've got a good idea where to go from here.
  10. Lol... ok, flat nose. Points are not flat or they wouldn't be pointed I just found another post similar to mine, so, yeah, I figure I'll keep same case volume by shortening oal and try some out.
  11. I switched from 124 gr plated round points (X-treme) to 124 gr flat points, due to availability / sale price. The flat points are considerably shorter, .059", so by keeping the oal the same, it will create more case volume. More case volume equals less pressure and possible squib or cycling problems. By shortening oal to keep the same case volume and pressure, I'm making the oal pretty short and have some concerns with possible feeding issues. Hogdon has no load data for flat points. Any suggestions on where to start? Just start over with new test loads, keeping same oal with more powder? (cur
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