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TJC

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About TJC

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    South East

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  1. TJC

    FCSA Update

    We seem to have lost some ranges whilst the consultation has been going on so just curious if they now come back or not.
  2. TJC

    FCSA Update

    If we lose .50 cals will we also lose some ranges the FCSA puts on for members ?
  3. Very interesting although a 7 degree spread isn’t perhaps wide enough to measure esp at the extremes of temp change. I’ve been testing VV N550 at 20F to 95F and found quite a lot of sensitivity with the same load lot / same number of rounds through the barrel with ES/SD remaining very constant. Just trying to understand if RS62 behaves consistently / linear at the extremes or whether it exaggerates at either end ? It sounds pretty stable in the mid-range for sure. Good thread btw.
  4. I was wondering if you’ve done any detailed testing re temp sensitivity and how groups/ES/SD evolve at material changes in temp ? Thx
  5. TJC

    .308Win bullet/load for 1200 yards

    March Scopes Europe. They have the 121gr for 6.5mm and their load data suggests they can get them up over 3200 FPS. Fierce !
  6. TJC

    .308Win bullet/load for 1200 yards

    If it’s only once a year, I’d be tempted to try the 180gr Warner Flatline solid that’s about to arrive in the UK. At 2700 FPS it stays ballistic all the way out to 1500 yards and looks very strong vs wind too. At 2800 FPS it will almost get you to a mile at sea level. Not cheap but if it’s only once per year.... They publish some good load data. With RS52 they are saying it can even hit 2850 FPS and they show some even hotter loads.
  7. TJC

    Temperature sensitive powders

    So true !
  8. TJC

    Temperature sensitive powders

    Often heard about this barrel burning issue with the 500 series but I’ve yet to experience it. Might be worth noting that N140 is 3700 joules as you say but N550 is 3900, only a 5% difference. Not nearly as much as some assume.
  9. TJC

    Temperature sensitive powders

    I’ve done quite a lot of testing with N550 and found it to be a fraction over 1 FPS change per degree F change when DA hasn’t changed materially. It’s not quite linear at the extreme end of temp ranges but in the 40-90F range it’s quite consistent.
  10. TJC

    Czech mil comp

    Cheers
  11. TJC

    Satterlee load development PtII

    Good point. Don’t forget Scott is loading for PRS not F Class. Most targets are 1-3 MOA, they are are typically a forgiving size. Perfect handloads aren’t the most important thing.
  12. TJC

    Czech mil comp

    Which comp is this one ? I’m thinking of doing the Sniper Comp on July 23rd... is that the same one you did or did you do the Police Comp which falls on the 30th July this year ?
  13. TJC

    Satterlee load development PtII

    Just loaded up 15 in 0.1 increments to try with the 130gr RDF. I might be mistaken but thought I heard Scott say his approach doesn’t work as well in the .30 cals. Not sure why but you seem to have a great result.
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