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  1. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    Been there. Jim G
  2. J

    Advanced Marksmanship My compiled reloading problems and queries (Sorry to spew..)

    Yes!! Much easier. Jim G
  3. J

    Advanced Marksmanship My compiled reloading problems and queries (Sorry to spew..)

    While I agree with your statement that .0005" increments allow finer control than ,001" increments, I'm not so sure about the button being inferior to a mandrel for the reason you gave. The Redding button I bought is sized to ensure that the ID of the neck is both (a) concentric with the case...
  4. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    I have only fired a couple hundred rounds through the rifle since brand new a few weeks ago (258 rounds as of right this moment). I have not ever yet fired more than 50 rounds in one range session. F-Class will ultimately require me to fire 70 rounds before cleaning I believe. I use Wipe-Out to...
  5. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    That was a completely unwarranted cowardly attempt at a put-down. I've compete plenty in local matches that I was qualified to compete in, and enjoyed the process. But it would be stupid to try to enter an F-Class or PRS match right now because: - I have fired only a grand total of jst over 200...
  6. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    I do understand. I just like to do TWO htings at once: (1) Find the nodes and (2) get some early indication of group size at that node by firing more than the minimum number of shots. Jim G
  7. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    That may be true, BUT, the rifles shoots really small groups. I am at a point where the rifle and ammo outshoot ME, so no point, at least yet, in trying to uncover even more accurate loads, since my shooting is not good enough to produce smaller groups if the rifle and ammo can. I need the...
  8. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    No. First, I tested 10 different powder loads, 0.3 grains apart, 5 shots each, to find those 2 node loads. Then, I loaded 25 each of only those 2 node loads. Jim G
  9. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    I did. I tried every 0.3g for a total of 8 different powder levels initially. There were 2 clear nodes. Then I tested the 2 nodes against each other. No point in going finer to 0.1g differences around this lower node, at least yet, as the combination of rifle and ammunition currently is more...
  10. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    There were 2 nodes in the ladder testing. The other one was at a higher velocity, but it was not as accurate when I tested using 25 rounds of each. Jim G
  11. J

    Advanced Marksmanship My compiled reloading problems and queries (Sorry to spew..)

    Yes, you are right about the terminology: Redding calls the part that sizes the INside of the neck a "size button", not a mandrel. I'm using a nitride one,a nd it seems to be doing a great job for me on the Lapua cases, in conjunction with the neck sizing bushing. Jim G
  12. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    Yes, I know that at some regular intervals, I will need to full length size, but as long as the cartridge is properly chamberable, I will neck size only, as that will minimize working of the case AND improve accuracy. My load is VERY moderate (2700 fps for 120g bullet) and I do have the 3-die...
  13. J

    6.5 CM Neck Tension Question

    Yeah, I did. :) Jim G
  14. J

    6.5 CM Neck Tension Question

    Yes, I guess there is some witchcraft, because I use the Redding .291" sizing bushing, and as the math I showed a few posts earlier shows (.291" minus (.0145"x2 wall thickness) - .2636" Hornady bullet OD), it makes for a "perfect" .0016" neck tension. And that .0016" neck tension is sufficient...
  15. J

    6.5 CM Neck Tension Question

    Depends on WHAT you are measuring. For most items being measured, you use the wide part, which on the best calipers, is also a special harder material than the rest of the jaw. But for items that are both curved and concave, you must use the thinner part of the jaws in order to avoid "bridging"...
  16. J

    6.5 CM Neck Tension Question

    Only digital MICROMETERS show 5 decimal places. There is no digital CALIPER that shows 5 decimal places. They show 4 decimals only, AND that 5th decimal can only read either a "0" or a "5". But even that is deceptive, because as someone else has already pointed out, the inherent accuracy of even...
  17. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    I hear you, and agree, BUT: 1. Due to COVID and applicable provincial resrictions on group activities during COVID, the next PRS or F-Class match within reasonable distance is not even tentatively scheduled until at least September, and may not happen at all this year. Our own local member...
  18. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    No danger of that. I've only fired 228 rounds so far. :) Jim G
  19. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    Be a little gentler. :) I wish Seymour Fish had been more specific. I SUSPECT he might be overreacting to Bryan Litz's latest focus. Or, he might be saying what at least 2 other good shooters have told me recently: Sometimes loads with unimpressive SD and SE nevertheless shoot really, really...
  20. J

    Techniques & equipment for load testing F-Class & PRS loads on BENCH?

    Don't underestimate my F-Class buddy. Although he now has both eyesight and mobility issues, he has a TON of F-Class experience, and he has won provincial championships here in Canada. He's also been my best friend since about Grade 10 in high school 55 years ago. As for single sources: They...
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