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  1. Doom

    223 Powder Issues

    As for the myth of over stabilization I will include some info from Berger "One myth related to BC and stability warns of the consequences of over-stabilizing bullets with too fast of a twist. The myth states that: spinning a bullet too fast can cause excessive stability and prevent the bullet...
  2. Doom

    223 Powder Issues

    The photo you are in reference to is misleading. While the primer produces more visible particles this doesn't necessarily translate to pressure it is due to impurities such as glass added to create more hot particles for igniting powder. Smokeless gunpowder relies on high temperature plasma(...
  3. Doom

    Groups are to small

    My post kinda goes opposite your recommendation but the reason is the OP needs to understand that MV is purely a function of the ammunition consistency which definitely affects long distance group size and is not a factor per se (very small factor) in defining what the rifle in his hands is...
  4. Doom

    Groups are to small

    There is no true one number answer for 300yds. The answer is dependent on many factors. A better question is what do you need and what can you consistently shoot at 100yds. At 100yds external ballistic factors, such as environmental play very little into the group size, it is primarily...
  5. Doom

    Won’t pass headspace gauge

    I think the issue is the Lee die does not have enough threaded portion to seat low enough with the Lee lock nut on. I have heard of moving the lock nut to the underside with pistol dies. Might try that with the rifle die.
  6. Doom

    Bullets getting jammed into seater die

    This description seems very strange but if the bullet is pushed into the neck and then the neck doesn't;t hold the bullet the neck is probably soft (maybe over annealed) with no springback.
  7. Doom

    223 Powder Issues

    You really didn't give us much to work with such as powder, velocity, or charge weight so its anyones guess as to what is going on. But If you have a powder measure that's good to +/-0.1gr with most powders in 223 that's about 24 fps ES for velocity. That is somewhere between a 4 and a 5.1 fps...
  8. Doom

    Does Sierra Have Any QC At All?

    They didn't melt off. The polymer would soften and the tips would deform. At longer distances the change in BC became noticeable.
  9. Doom

    Does anyone stand with Berger?

    It's pretty simple. The faster the machines run the greater the deviation from the mean will likely be. But the unit costs will be lower for the fixed costs. The real question is "can you shoot the difference in precision" between the brands?
  10. Doom

    two different lot numbers

    Nice analysis. I've seen the same variance in the 168 SMK )but don't remember the difference) but the rifle I'm shooting it in is a factory barreled Rem 700 so the bullet is jumping a country mile so its hard to compare it to a good competition chamber's effect. This brings up something that...
  11. Doom

    two different lot numbers

    What you are measuring is akin to the bearing surface but depending on the inserts it's probably not giving a true gauge. Small variations in the ogive radius or boat tail angle will case variations which have no bearing on the performance of the bullet. Small variations in boat tail angle or...
  12. Doom

    Recommend me a new scale

    Just to add that speed and precision work against each other not only on the Autotrickler but any of the Chargemasters or other similar autodispenser.
  13. Doom

    First time reloading

    What are your goals here? Long range shooting? What distance? Competition?
  14. Doom

    300y ladder with 223/80.5 Berger/N540

    Not what I said. You have to consider what is effecting the dispersion and POI in relation to the distance. For instance on a calm day wind may not be an issue and a 300yd test might yield consistent results but it the SD/ES of the rounds is inconsistent it becomes a factor. Shot at 100yds...
  15. Doom

    300y ladder with 223/80.5 Berger/N540

    The problem with a Ladder shot at 300 yds is that it mixes the factors that affect the Point of impact. By that I mean the the path the bullet leaves the barrel and the velocity variation that is affecting the drop which also affects the POI. The environmental also begin to come into play...
  16. Doom

    OCW Help

    First off with the 223 the nodes when they show are only about +/-0.1 gn so the ).3 charge increment can skip it. Normally you should use 0.2 gn. The target displays what can be a common issue with OCW being shot round robin. It also test the shooters ability to duplicate the same shooting...
  17. Doom

    Does anyone else get frustrated reloading

    Oh yes, it is sometimes frustrating. But @diggler1833 has the right approach. If you read on the internet enough you will get the feeling that you have to "get to a kernel of Varget" or "seat to +/-0.0005" when in reality most of the time these types of thing just don't matter. Now lock rings...
  18. Doom

    CHRONOGRAPH USE AND BASIC SAFETY

    Obviously the velocity data can be important to determining a safe load but it doesn't replace the usual signs of excessive pressure. It is not critical to developing a good load either but it does make it easier to predict which loads will like work better at longer ranges. A load that shoots...
  19. Doom

    Right or left ?

    I found that using a pencil flame torch like the one below allowed for more precise heating and kept the heat away from the body. https://www.homedepot.com/p/Bernzomatic-Classic-Brass-Torch-for-Propane-Gas-Cylinder-UL2317/100079143
  20. Doom

    Sierra 6mm 107HPBT Matchking caution

    I think the older SMK you refer to was listed with a P/N of 1715. That bullet had a BC of .43 I think.
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