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Guy Neill

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Posts posted by Guy Neill

  1. For me, one of the goals in dry fire is to drop the hammer without disturbing the sight picture. Capturing the hammer would not allow that.

     

    Note that the firing pin spring wll take a beating and should be replaced frequently.

     

    Also, inspect the firing pin stop as it may crack.

     

  2. In SS if you are moving, you're trloading, so a mag well is beneficial. Since you also specfying new grips, you might look at the Hogue Extreme grips ttat have the grips extended along with a new mainspring housing that is also extended, making a mag well from the three.

    How are the sights?

  3. While you say you are seating them completely, the only time I have been able to document primers firing on a second firing pin strike is when they were not completely seated.  How far below flush with the case are they seated?

     

    I would take a sample group of cases, uniform the primer pockets and seat the primers to 0.003 - 0.005" below flush with the case and try them., If they all fire, it may have been a seating problem.  If not, more suspicion on the primers.

  4. It makes me think the slide is not traveling far enough back to lock open.  What weight recoil spring is in the gun? You might try a lighter spring.

    Is there a Shok-Buff in the gun? That could limit the rearward movement of the slide as well.

     

  5. If the primer cup is deformed, it is not able to completely fit the primer pocket.  This will allow gases to escape when fired and will very likely erode the breech face of the gun.

     

    Best top not use a deformed primer.

     

     

  6. Since the powder charge is a component of the recoil, whichever powder requires more to obtain the bullet velocity will have more recoil - whether or not you can notice it.

     

    Also, whichever uses more powder will give fewer loads per pound of powder.

     

    There's nothing wrong with either powder, as it depends on which best meets your needs.

     

  7. The reloading manuals, at least those I'm personally familiar with are not conservative.  All the maximum loads I hsve developed for manuals have been as close to SAAMI MAP (Maximum Average Pressure) as possible without going over.  That's not being conservative.

     

    But, yes, reloading data HAS changed over the years, but not due to being conservative.  In the 1950's or so, none of the manuals (that I'm aware of) for load development.  They used case head expansion measurements - a very poor means of trying to determine pressure. 

  8. When I originally tested 231 vs 244, the charge weights were the same, but 244 gave higher velocities.

     

    Load

    Number          231          SD       244          SD

    1                      638.5      30.2     972.0       23.2

    2                     713.7       240.3    1012.5     17.5

    3                     766.6       20.0     1069.5      13.6

    4                     794.0       56.5      1123.8      10.8

     

    These are 9mm Luger using 124 coated bullets fiured from a SA Loaded pistol.

     

  9. Heat is the enemy for powder and primers.  It likely would take prolonged storage in heat to seriously affect them, but it is known that heat will deteriorate them.

     

    Steel, as in dies and presses, are likely most affected by humid conditions.  If you can insulate and AC the garage it would likely be better fdor the tools.

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