Recent content by Brian in Montana

  1. Brian in Montana

    Load Development

    Interesting observation about 4350. I've noticed the same.
  2. Brian in Montana

    Load Development

    Probably not every rifle. I load a .308 a good bit and often tend to find good accuracy at higher pressures. Same seems to be true, in general, for 7mm-08. But I also load 30-06, .284 Win, 280AI, and .270 win. Can't say I've really seen that with those. Accurate loads seem to be all across the...
  3. Brian in Montana

    Cartridge pressure signs

    A pressure sign that is often overlooked is velocity itself. Spikes or drops in velocity are usually a warning sign. The condition of the primer can be a little hard to read, they're not all designed the same. I use F210's almost exclusively (since the pandemic), and they just about always come...
  4. Brian in Montana

    Compact tikka t3x 223 ackley

    This looks like a very cool little rifle. Someone grab it. 👍
  5. Brian in Montana

    Help, I need a new pronghorn rifle!

    On threads like this, I always tend to recommend a Tikka T3X. I sold it a while back when I got into building my own, but the last pronghorn I shot was with a T3X Hunter stainless in .270 Win. Light weight and very accurate. I've had several Tikkas. They are excellent hunting rifles right out of...
  6. Brian in Montana

    Barrel harmonics obstruction

    There shouldn't be any functional difference between a bipod or bags in terms of barrel harmonics, as long as its just the forend of the stock. In both cases the forward weight of the rifle is supported by the forend resting on something. Barrel harmonics aren't effected unless something is...
  7. Brian in Montana

    Barrel harmonics obstruction

    I use a Magnetospeed a good bit, but you can't really shoot groups to test accuracy while that bayonet is attached. Just use it when you need to get muzzle velocity. I sometimes use it for a 10-12 shot string for a ladder test, but then shoot some groups, without the MagSpeed, based on the...
  8. Brian in Montana

    Barrel harmonics obstruction

    Yes, the MagSpeed will change barrel harmonics and point of impact.
  9. Brian in Montana

    Ideal shot placement for Copper Hunting bullets

    I don't think you need to feel like you should change your shot placement. What worked before still will. I guess the only thing I think about is I might be a little more inclined to take a quartering towards shot with a solid copper, as opposed to, say, a Hornady SST.
  10. Brian in Montana

    Barrel harmonics obstruction

    If the bipod is attached to the forend of the stock, not the barrel, there's no reason to believe it is changing the harmonics.
  11. Brian in Montana

    280 AI help

    One last thing, my 7's all shoot the heck out of 150gn standard Accubonds. I've killed several elk with my .284 Win (23" barrel) shooting a 150gn AB at about 2850. I'd be surprised if you couldn't get similar results in your 280AI.
  12. Brian in Montana

    280 AI help

    I was curious and took the liberty of plugging some #s into Gordon's Reloading Tool. The closest I was able to get with any powders I know anything about were RS Hunter - 58.5gn, RL23 - 59gn, and RL19 - 59.9gn. These were all like 2803fps and were all literally RIGHT UP TO THE RED LINE. Meaning...
  13. Brian in Montana

    Swift Sciroccoll Bullets

    They certainly have a dedicated following. The only time I ever tried to load them, I couldn't get them to group for anything. My .308 didn't like them. I've read they really like a long jump. Probably even more so than Accubonds.
  14. Brian in Montana

    280 AI help

    You're going to have trouble pushing a 168gn bullet 2800fps with a 20" barrel. I'm afraid that's just physics. I'm not saying it's impossible, just tricky. I can readily do that in mine with several powders, but mine has a 26" barrel. I don't have experience loading 280AI in a short barrel like...
  15. Brian in Montana

    Viper Benchrest Barrel Vise

    Well... I may be the only person in history who has broken a Wheeler Barrel Vise - long story, but involves a protracted fight with a factory Tikka T3. I've read the Viper barrel vise is solid and actually an upgrade from the old-school Wheeler. Anybody used one? I'm not a gunsmith, but I've...
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