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Big Al

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  1. Big Al

    Trying to contact "The gun pimp"

    I dont think Vince would mind me sharing his new email, he usually replies promptly. targetshooteronline@icloud.com
  2. Big Al

    variable CBTO / COL

    Yes its normal, bullets can easily vary this much in OAL from batch to batch and Ive seen much more. CBTO is what matters so keep it at 2.270" - COL has no bearing on accuracy, it just ensures your rounds fit in the magazine if your using one. Bear in mind if you have changed your bullet batch you might need to tweak your seating depth a little, its not uncommon to see an accurate load go off a bit when changing to a different batch of the same bullets even if your CBTO is the same, it always pays to re-test if your looking for the best accuracy you can get and try to stock up on the same batch if possible.
  3. Big Al

    1st shot in a string velocity

    Over how many five shot strings did it display the same trend? An ES of 43fps, that is entirely possible depending on many variables, does the Labradar show a similar pattern with any other rifle you have?
  4. Big Al

    New sizing dies from Exact

    Reamers will wear for sure but that will vary depending on how they are used and the amount is minuscule in relative terms to this discussion. Bear in mind the wear would also be even and because you are working with a tapered case and resizing die that also offers variable/independent headspace adjustment, it could easily take up any wear and still produce very well fitted brass, much better than the randomly sloppy or overly tight dies sometimes do. The problem with dies made for SAAMI spec cases is that there are top and bottom tolerances in both the die manufacture and also the manufacture of the chamber reamers. Add to that the user of the reamer to cut your chamber or make the die on size and sometimes you end up with a real sizing headache. Ive seen this quite a few times. I think the limitations of this system would most likely be the end users ability to make it do what its designed to. I like the concept but I dont think it will change things for most people. I guess in general a lot of the time regular dies work just fine for most people. Its only when you have a problem or if your looking for the highest levels of accuracy that going the custom route can help.
  5. Big Al

    New sizing dies from Exact

    Repeating chamber dimensions is easy enough if you use the same reamer. I guess if someone is investing in a set of custom dies they need to know the person that will be supplying their barrels going forward can do this. If the person doing the work can't cut two chambers the same using the same reamer then they are using a method that is fundamentally flawed.
  6. Big Al

    N 150 versus N 550

    Interesting Laurie. Can I ask what do you know about temperature stability between the 100 and 500 series? I remember reading somewhere recently that the 100 series was due for an upgrade in this regard?
  7. Big Al

    204 into 223

    Its a very common switch that will give you much more flexibility in one rifle.
  8. A straight .284 Winchester shooting Berger 180 VLDH or maybe a 7mm SAUM a touch faster? Which one of the OPs requirements wont either of these do well? Both .284 Win and the hotter 7 SAUM with 180s are top choices for 1000yd FClass and .284 is also very effective in 1000yd benchrest. Send a 180 VLDH at 2850-2950fps from either case towards anything on four legs within realistic plains shooting situations and you wont be under gunned either, I have a number of friends who shoot in Africa to silly ranges at typical plains game with 180 VLDH at similar speeds. As for one gun, I agree that a plains game rifle and a proper FClass/benchrest rifle will look quite different but a tactical style (as show above) could do both well unless the OP is hell bent of competing at the highest levels of FClass or walking the plains all day. As for benchrest, Ive built tactical style rifles for two different customers that hold UK small group records and are currently leading UKBRA championships. I also agree that none of the initially mentions rounds are a good compromise as you say
  9. Big Al

    Foxes. What do you do with them?

    Maybe someone from the management might think it wise to remove this thread?
  10. Big Al

    UKBRA Round 4 - 7th and 8th July 2018

    Nice one Dale, well done!
  11. Big Al

    Foam for gun cases?

    Can anyone point me in the right direction? Im looking to replace the foam in an SKB iSeries case, internal approx 42" x 14" x 5"
  12. Big Al

    Twist rate

    You can't read a gusty wind with any level of precision in a field situation, what makes you think you could learn this or that others reliably can? Its one thing doing this at man size targets but at a crow its something entirely different. We can usually cope with steady winds quite reliably up to 6-8mph if the topography of our ground is forgiving but if your ground is very undulating and the wind starts to gust all bets are off! Theres a limit to what we can realistically achieve with the rifle you have or even a faster twist barrel, a 1mph wind change is enough to miss your head on crow at 200yds, side on rabbits are a lot more forgiving. I think places like Youtube give people an unrealistic expectation of what can reliably be achieved as they usually show only the hits and not the many misses. Dont get me wrong, Im not trying to say you can't better what your doing but keeping it in the real world helps
  13. Big Al

    Twist rate

    There is no magic bullet, at the ranges you are shooting there will be little in it between any of the bullets your barrel can properly stabilise. To make a noticeable difference you need to really go to the 75/80gr class of bullet and a factory 12 twist wont do it. Sometimes you hear of people shooting the heavy bullets from a twist that isn't fast enough yet they are accurate. It might happen occasionally but they miss a very significant and relevant point. If your barrel did manage to stabilise a 77TMK the BC would be severely compromised by it not being spun fast enough in such a slow twist barrel. The compromise on the BC (when its not fully optimised by the right twist) then puts the heavier bullet in the same ballistic window as the lighter but more optimally stabilised lighter bullets. There isn't really an answer for what you want unless you get an 8 twist or learn to read the wind a bit better. At 200-300yards speed is just as important as BC in dealing with wind, its in the 400yds + range when a heavier bullet with a better BC comes into its own.
  14. Big Al

    UKBRA Round 3 - 16th and 17th June 2018

    Great result yesterday Darrel. Very well done for winning the day outright and finishing first heavy gun. With two wins and one third place so far this season you are looking like the man to beat. Keep it going
  15. Give them a different assignment. ☺️ The permutations of things that would need to be covered is almost endless. Every barrel tested would need to be load developed with a huge range of different components to be certain you have the barrel as fully tuned as it could be before it would be fit to be compared to the others. Multiply that by a big enough sample size from each barrel maker invited to test and you have a project so big it would be a monster. Its not a test I feel is necessary as barrels are not the weakest link, load developers and shooters undoubtedly are.

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