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  1. straightshooter1

    Annealed brass opinion

    Since I tend to load long and hand feed my 6.5 PRC cartridges for target shooting, my case fill is just a little less than that. Having used 3 different bullets (Berger 140 Hybrid, 142 SMK and Berger 153.5's) with H4831 SC, I've surprisingly got some very good SD's (like in the mid single...
  2. straightshooter1

    Annealed brass opinion

    To find case volume, I find doing 10 is enough. Just be sure you're measuring fired brass, not sized or virgin brass. And having cases with the same OAL as variation is trim length can make quite a difference. And as you can tell in that Peterson Cartridge data, it's a good idea to do this...
  3. straightshooter1

    Annealed brass opinion

    Yes, quite a few people have done so actually, and I'm just one of them. It can be very obvious when comparing the likes of Winchester .308 brass to LC .308 brass. Winchester brass is quite a bit lighter with much more case volume than other brass. For example, when I weighted 10 random...
  4. straightshooter1

    two different lot numbers

    A few years ago I ran a test to get some idea what a difference is bearing surface length makes as I saw a difference between two lots of my 168 SMK's of ~.034" (it being a comparator measurement and not exact measurement of the bearing surfaces). What I found when comparing 20 rounds of the...
  5. straightshooter1

    .308 Winchester

    I had read what was published at the website they linked to (Precision Rifle Blog) back when it was published in 2020. The data was very interesting to me, but the testing referring to "bullet jump" bothered me as there was no mention the relationship to seating depth. This makes it confusing...
  6. straightshooter1

    Consistency, or lack thereof

    I haven't used Varget in a long time since I switched to AR-Comp, but looking back at my data, 42.2 grs of Varget didn't do particularly well for me pushing 168 SMK's with a COAL of 2.846" (decent SD's and ES's, but poor groups out of a Krieger 24" barrel). 43.0 grains worked really well for me...
  7. straightshooter1

    Consistency, or lack thereof

    Hmmmm??? Some numbers you've stated don't add up. If your new lot of Varget is giving you 40 fps faster than the 2640 fps you got with the old lot, that mean you'd be looking at 2680 fps. . . not 2740. Or, was this 2740 just a typo and you meant 2640? If I understand you correctly, you had...
  8. straightshooter1

    Bushing or mandrel or both?

    I'm in a phase of leave nothing untouched. ;) :giggle: Why not, when one is my advanced age with lots of time on one's hands.
  9. straightshooter1

    .308 Winchester

    Yes, you'd be jamming that round since my chamber is not the same as yours. And that's why it's not a good idea to ask about someone else's distance to the lands and better to ask about COAL. With the COAL info, you can determine using you're own comparator (which also can have significant...
  10. straightshooter1

    Hypothetical: 1x fired --> annealed

    I think you bring up a good point as to comparing "annealed to 5-7x fired brass". This big issue there is what's the difference between 5-7x fired brass and 2-4x fired brass. Certainly as the necks and shoulders of the brass that's not being annealed is getting work hardened more with each...
  11. straightshooter1

    .308 Winchester

    You know that .020" jump in your chamber could mean an .080" jump in my chamber? If this were so and I handed you one of my cartridges that has a jump of .010" in my gun, how do you think it's going to fit in your gun? It's better to reference COAL than jump to have a decent idea of someone...
  12. straightshooter1

    6gt ARC CDG and light primer strikes

    I've got the Forster FL Sizing Die and the Forster Bushing Bump Neck Sizing Die. I don't use the expander ball in the FL sizing die as it just produces poor results in terms of neck TIR and consistent shoulder bumps. So, I use the FL sizing die without the expander ball and use an expander...
  13. straightshooter1

    Hypothetical: 1x fired --> annealed

    Hmmm??? Unless such a test is done in a controlled environment (like a test tunnel. . . or a very long warehouse ;)), I'm not sure how such an extensive test might be valid. 🤷‍♂️ I know the guy the runs the website at the Precision Rifle Blog has recently built himself a very nice test...
  14. straightshooter1

    Annealed brass opinion

    I don't worry about the lead residue as I minimize contact with the small amounts of lead wearing gloves when I clean the necks with steel wool. And I really don't want to remove any or just remove very little residue on the inside of the necks. The order of my cleaning takes care of the...
  15. straightshooter1

    Hypothetical: 1x fired --> annealed

    I agree about 10 rounds given the statistics for that number. That's why I combined each of the 10 sets for 20 on my spreadsheet as 20 is a much better telling figure. There's an error factor for 20 too, but. . . but it's getting pretty small and I think, small enough to answer the question as...
  16. straightshooter1

    Hypothetical: 1x fired --> annealed

    Fascinating. Skepticism is a good thing and can lead to good science, but there are forms of it that just doesn't lead to progress. 🤷‍♂️ In the spreadsheet I posted, I took the values right off each of his chronograph readings as he fired them since they were not published anywhere. And...
  17. straightshooter1

    Annealed brass opinion

    Hmmmm???? I really don't think that switching to Lapua from ADG is the thing that'll get your SD's lower. I typically use Lapua for my 6.5 PRC and recently got to ADG to try (just because I like to shoot and experiment with different things, since my old body just isn't up to the rigors of...
  18. straightshooter1

    Hypothetical: 1x fired --> annealed

    Like I've read so many times myself where, like your friend, claims made for getting good results without annealing are made. But there's so much missing information, like. . . how much expansion is being done in the chamber and how much sizing is being done to get an idea of how much work...
  19. straightshooter1

    Hypothetical: 1x fired --> annealed

    There some good science on AMP's website. One needs to delve into the numbers to really understand the science there. ;) https://www.ampannealing.com/articles/58/annealing-under-the-microscope/ Shooters have found that "neck tension" is really important to consistency/precision...
  20. straightshooter1

    Hypothetical: 1x fired --> annealed

    Hmmm??? Well . . . there good reason why fire forming brass makes such a big difference in the brass's contribution to consistency. :rolleyes: Even the best of the brass (e.g. Lapua), virgin brass always has lots of inconsistencies in their dimensions that need to be ironed out to get the...
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