Recent content by Dr.T.

  1. Re-Sizing NEW Brass?

    I don't see any harm in sizing new brass, but there will be merit in uniforming necks. If you only have expander dies then FL sizing new brass makes sense. I neck turn most of my brass and they get expanded slightly as part of this process. Beyond that it's FL sizing every time. Nice video...
  2. Sold: PVS14 GEN 3

    PM sent (on behalf of my brother).
  3. Crimping

    Hi Heym I agree that crimping gives firmer neck tension (you make the neck smaller) which would stand up better to rough handling, but I'm not sure that this translates to more consistent neck tension (as above, you're pushing inconsistencies inwards). As for whether crimping adds another...
  4. Crimping

    Hi Muir I figured that neck tension affects internal ballistics (essentially how much pressure builds up before the bullet is released) but I'm curious to hear more! Also noted re. factory loads being crimped, but on the other hand, I don't know of a single benchrest or F class shooter who...
  5. Crimping

    Hi Muir - out of interest, why would crimping provide a more uniform 'pull weight' (presumably you're referring to neck tension) - aren't you pushing neck inconsistencies towards the inside of the neck, creating more irregular neck tension, as well as providing much higher neck tension? I would...
  6. Custom barrels

    As above, I'm sure that most custom barrels will do the trick. My last four barrels have been from Bartlein and they have been flawless. Besides Bartlein I would look to Kreiger, Brux, Benchmark, Pac Nor or Blake (although Blake barrels aren't yet in the UK). I'm sure others are fine too, but...
  7. Sold: Sako 75 223 mcmillan a5

    Hi rwade - nice speaking with you. I'll take it.
  8. Most accurate rifle you have owned?

    Until recently it was my 7-270 WSM (RPA quadlite, Bartlein 9 twist, 32 inch, home loads) which shot a .25 MOA 3 round group at 1000 yards. Recently been outdone by my 7 SAUM (Borden, same barrel as above, home loads) which put 14 out of 20 shots inside 0.5 MOA at 1000 yards, with the other 6...
  9. Donuts

    Once you've eaten your doughnut... Check whether you can seat your bullet longer in the case, so that the bearing surface of the bullet sits forward of the neck/shoulder junction. If so, this should reduce/avoid any impact of the doughnut on your bullet. If you neck turn your brass, set the...
  10. Auto scales

    Depending on how much you're prepared to spend, you'll struggle to beat an autotrickler plugged into A&D fx or fz scales. I have been using this setup for the last couple of years and it is phenomenally accurate and convenient. I was previously using a tuned set of RCBS beam scales with a...
  11. Tighter grouping without mods

    Potentially, yes.
  12. Tighter grouping without mods

    Adding any weight to the end of a barrel will influence harmonics and group size, and the effects will be more pronounced with heavier weights, longer barrels and thinner barrels. The moderator is acting a bit like a barrel tuner, except that it has only one setting. Assuming your barrel is...
  13. Murom Primers

    I can only speak for the KVB7, and they're excellent. I use them exclusively in my 7 SAUM and 7WSM competition rifles and they far outperform other primers that I tested.
  14. Need for higher standards of marksmanship?

    Interesting thread and I couldn't agree more. I was really surprised by the standard of shooting on my DSC1 course, where the average barn door would have been safe (even when shot from a bipod). Which was odd, as most rifles "shoot 0.5 MOA bughole groups all day if they do their part". Joking...
  15. Neck expanding die?????

    21st century shooting does an expander mandrel set which should do the trick. They increase in .5 thou increments and I can highly recommend them.

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