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  1. O

    ***.40 S&W crimp question***

    ^This^. With Major PF your recoil spring is probably too light. Maybe 14# minimum and it should run on the stock one. I also like these. EGW U die made by Lee. It helps. Range brass is a reality for most action pistol guys. If there is no leade in your barrel, it's the gunsmiths fault...
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    ***.40 S&W crimp question***

    As Wakajawaka posted, including the terminology What's missing from a short chambered barrel is the ramp or taper on the ends of the rifling. The mouth of the case must also catch on the end of the chamber he's pictured. Smooth bullets sound good, but they're not designed to be that way...
  3. O

    ***.40 S&W crimp question***

    I shot for leaving the case mouth .0005 - .0015" over the diameter of the case around the bullet. It's easy to measure with a digital caliper. I ran a G22 in IDPA with a series of Storm Lake barrels. The one currently in the gun is a fitted BarSto. The fitted barrel didn't do anything for...
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    Runout Problem with .223

    No problem, I'll keep an eye out for them.
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    Runout Problem with .223

    This is my favorite explanation on AR gas systems. AR15BARRELS.COM - Randall's description of AR gas operation and how everything works in harmony There is a reason why the manuals say start at the bottom load and work up, some combinations of chamber, brass, powder lot, bullet jump, and...
  6. O

    Runout Problem with .223

    I use any case head expansion is too much a half grain ago on a case this size. Your velocities will be a lot closer to SAAMI and much less than the internet though. http://www.saami.org/specifications_and_information/specifications/Velocity_Pressure_CfR.pdf There are enough people who...
  7. O

    Range Report Vertical Stringing Advice

    Nice job on the ammo. Bedding? Skim bed it or at least a dab behind the recoil lug?
  8. O

    ELR optimization theory

    Where the rocket analogy goes south is a nozzle trades pressure for velocity. In the case of supersonic flow, very inefficiently at that. If you extend the rocket nozzle with a tube and plug it with a bullet the pressures on either side of the nozzle will be too close to produce supersonic...
  9. O

    223AI/90gr Berger VLD

    Thanks for the information here and in the earlier thread. I'm considering a similar project with a Stevens 200.
  10. O

    Why do so many folks like the Lee FCD?

    ^This^ It presses inward into the bullet canelure with pressure upward from the shell holder not downward through the case. I don't crimp my precision rifle loads, but if it's destined for an auto loader and the bullet has a canelure it gets crimped. I use a progressive press, so it isn't...
  11. O

    6.5creedmoor neck tension

    0.003" is good for neck tension, that shouldn't be your pressure problem. Chamfering the case mouths will get rid of the bullet shaving. A 24" 6.5 with a standard length gas system is going to have higher port pressure and longer dwell time than a 20" 308. Only so much can be covered up with...
  12. O

    6.5creedmoor neck tension

    Reducing the neck tension probably won't reduce the ejector swipes much if at all. If the load is within reason, an adjustable gas block probably will. As the gun gets rounds through it and cycles easier, sometimes the bolt timing needs to be slowed down. The ejector mark is from the bolt...
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    Accurized Colt AR-15, Varget, and 50 Grain V-Max Loading Data

    I use Varget with the 77 smk, and out of curiosity ran it through QuickLoad. It looks like Varget is one or two powders to slow for that application. 25.4 grains of Varget is lightly compressed in a case with 30.5 grains of water capacity, which is fairly large for 223. The burn fraction is...
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    300 Blackout Primers

    Federal small pistol primers are the darlings of the action pistol games because they're the easiest to set off with light hammer and striker springs. I doubt it would be a problem with a bolt gun, but it's probably a bad idea in an AR.
  15. O

    40 cal plated bullets

    I ran tens of thousands of them for IDPA at 740 fps. It's not just the thin jacket, they're a swaged lead bullet underneath which is dead soft. Berry's says they're good to 1200 fps. You're not going to get there with a 180 in 40 S&W. They didn't work well in a stock Glock barrel, but...
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    question about brass weighing

    You’ll need a chrono to see the difference. You’ll need to have been using it awhile to have enough control over your velocity spread to notice a difference from weight sorting brass. I did anyway. Weighing and filling a few cases to see the correlation between case weight and volume is a...
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    question about brass weighing

    I use 2 grains for 308. There is a benefit just to getting the really heavy and really light ones out of the mix. A handful per 100 of fliers that won't happen. Culls to set dies and tools with rather than good cases. The specific gravity of brass is ~8. 8 grains of brass is 1 grain of...
  18. O

    case sorting question

    I like to hang numbers on things to try to get a sense for when things stop mattering for what I'm doing. 1 grain of Varget with a 175 grain SMK will give a change in average velocity of 55 - 60 fps. Weighing the charge down to +- 0.1 grain cuts the contribution of powder weight to velocity...
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    Rifle Scopes Anyone ever used a Falcon Menace 5x25x50 ML16

    I bought the 5x25 a few months ago to try because I liked the two 4 x 14s I had so much. It's ok for the price if you really need the magnification. The warts and blemishes of cheap glass start showing up at 10X and are glaringly apparent at 20x. As would be expected, the eye box is much...
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    Comp seating die worth $$???

    Worth it is a relative term and a personal decision. You can load sub moa ammo with conventional dies if you know what you’re doing and the rest of the system is up to it. The micrometer adjust is the third and least important feature of that die. The first is the sliding sleeves that...
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