Search results

  1. M

    Montana 1999 Professional Hunter 505 Gibbs

    I just bought a few from Kynoch (Kynamco) in the UK. Their website spread sheet said initially they'd be around 90 GBP for the pair, but I guess that's only if you're in Europe and paying VAT because they charged me 11 GBP per dummy round. Shipping to Canada was the bigger charge, but I ordered...
  2. M

    505 Gibbs reloading with Hodgdon Retumbo

    Anyone have experience using retumbo with the Gibbs? I've seen a post here & there discussing it but I'd like to dedicate a thread to it. Theoretically I should be able to load 147 grains of retumbo safely, just wondering if anyone has any experience with that. Thanks in advance! P.S rifle is...
  3. M

    Bought my first big bore, 505 Gibbs. Looking for load data/advice

    Good point. I'd be happy to push a 600g bullet to 2250fps. That's an accomplishment to be able to shoot reliably well.
  4. M

    Bought my first big bore, 505 Gibbs. Looking for load data/advice

    Magnificent. I could have this wrong, but my understanding is the Gibbs case is actually generous, however the old Kynoch loads with cordite were designed to operate at 40ksi. This 40ksi pressure limit is irrelevant with modern brass and powders, correct? The actions are more than durable enough...
  5. M

    Bought my first big bore, 505 Gibbs. Looking for load data/advice

    600 grains @ 2500fps would be punishing. I've shot a 460 weatherby w/o muzzle brake and it was unpleasant, I can only imagine this load. And 2100fps is more than adequate, I'd just like to get over the 2200fps mark to squeeze a bit more out of it ballistically. I realize this sounds like I'm...
  6. M

    Bought my first big bore, 505 Gibbs. Looking for load data/advice

    Hello all, I'm excited to be here. Just bought my first big bore in 505 Gibbs. It's a Montana Rifle Co. DGR. I'm looking for advice and recommendations on load data. I know the original Gibbs was recommended to cap at 40 kpsi of pressure, but could one load slightly hotter? Do any factory...
 
Top