Search results for query: Seating depth vs powder charges

  1. Seating depth vs powder charge ladder tests

    I have always wondered how much powder I could burn figuring this out... So you choose a seating depth to try your powder charges and look for patterns and velocity consistencies. Then you choose a powder load to try for "fine tuning". So you play with seating depth and look for patterns and...

  2. powder ladder??

    There are no velocity 'nodes'. To find an accuracy node you look for group size vs incremental powder charges/seating depth.

  3. Reloading: A look at the Big Picture

    Not sure what you consider "materially diffferent" but they were talking within a single caliber, with maybe a 10% max variance in lowest vs. highest charge. They were saying once you've settled on a searing depth, it should hold for the range of powder charges e.g. from 24.0 grains to 26.0...

  4. Hornady 75 bthp match

    I always used the same load - IE components other than bullet, powder charge and just tested the seating depth on the H75, based on ogive I always ran the H75 in a Wylde more like 2.240-2.235 COAL vs the SMK77 at 2.250 COAL. Found the seating depth made the difference on the H75 for my load...

  5. Seating depth or charge weight, first?

    I have been reading quite a bit on the seating vs powder first and think I am going to give the seating depth test first a try. I am wanting to maximize my time at the range so I thought of an idea, if it would be safe to do? I have a plate steel stand for my coax that makes it portable. I can...
  6. Straightshooter1

    Is seating depth a constant?

    Seating depth work in concert with the powder to produce a certain pressure curve that causes the rifle to resonate at a particular frequency for a particular gun. So, keeping the same seating depth with different powders will almost always produce a different pressure curve and change the...
  7. bozo699

    Seating depth or charge weight, first?

    I always seat long and do my final seat at the match. It was safe the first time I can’t see any reason it would be any different a second or third or fourth time in the seating die. Wayne
  8. LVLAaron

    Vertical Dispersion: Flat spots on the MV ladder test are meaningless

    For this setup, I really only "need" 10 - But I'm going in knowing almost exactly where it will land. On an unknown setup I'll do 30... There are a dozen ways to do load development, they all lead to the same thing - Powder and seating depth choices. Do what works well for you, at the range...

  9. Statistics

    define the conditions when this is a valid test ?? and why not just shoot 4 three shot groups vs a 12 shot string

  10. 6mm Creedmoor Load Development: Powder Charge

    Hi all, When developing a powder charge for a load, what do you consider to be a "node"? Is a powder charge node specific to ES and SD, or it relative to accuracy? I'm starting to narrow down between a few different powder charges; Here is the relevant data i collected today to provide a...

  11. 1000yd Benchrest Load Development

    I don't know the post to link it, but Tom posted his ladder testing early this year.. I think Alex made a good point about ladder testing vs the Cortina 100.. You can be on the edge of a node shooting low ES's and small groups at 100y, but get on the range at 1k and have huge vertical.. This...

  12. Comeback Shooter and Old School Tuning vs the Ladder

    I shot 1K BR in Tucson from 2005-2007. I did okay my last year there with a 300 WSM Light Gun. I shot five screamer light gun groups (4" or less), set two LG club group agg records (4.91" and 4.71"), and got a bunch of 1st place finishes. I realize none of that even warrants a mention by...

  13. MV question

    I have played a lot with QuickLoad and found that 0.010 difference in seating depth can cause 20-30 fps difference in Mv. Don't forget, when you play with different jumps, you are actually changing the case volume . So, lesser jump makes for lower Mv. I have never quite believed "some barrels...

  14. Powder charge weight variation

    There have been many many many studies done on volume vs. weight when throwing powder charges. Powder is just one variable in the equation on accuracy. Bullet weight, case capacity, primer burn rate, primer depth, bullet seating depth, etc also play a role. Why hold any one variable to a...
  15. SmokinJoe

    Opinions on LE Wilson vs Forster Ultra Seaters

    I think it just depends on whether he wants to use a bench mounted press for everything, or use the Wilson seater with an arbor press for bullet seating. My reloading practice has morphed into a pretty well matched FL (usually bushing type) sizer die that I keep die shims & a dedicated shell...

  16. RL17 temp sensitive

    I've never seen a spread that large for Varget, but I've only ever ran it in the 53-62kpsi range (measure with a pressure trace system). There have been some variation in the results with different loads and different lots of powder, but I've never seen a change of over 30 fps. The results...

  17. 1000yd Benchrest Load Development

    That's the way I see it I never have had a flat base bullet shoot at 1000 . Larry

  18. 1000yd Benchrest Load Development

    what do you mean by higher node ray? higher velocity node? upward impact on page vs trending down impact? In my experience there will be several spots that you will witness or benefit from BC not just higher velocity node. more often then not I'm in the lower BC velocity range these days but on...

  19. Occam's razor

    Occam's razor simply states that of any given set of explanations for an event occurring, the simplest one is most likely the correct one. How often do you apply this to reloading? I apply everytime time I sit down at the bench. A good example, seating primers. Does seating primers require a...

  20. O.A.L. Advice

    Help me understand this a little. Are you saying that leaving the powder charge the same, but increasing the jump, will not increase pressure? It seems contrary to my understanding of powder charge vs case volume "internal ballistics". I agree that increasing the distance to the lands could...

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