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257Wby - 100gr GS - Shooter and Hot Rod

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  • 257Wby - 100gr GS - Shooter and Hot Rod

    Well, I have found the 100gr GS load. Great velocity, no pressures, great group. Using IMR7828, Fed 215 primers (CCI had to big of 1 1/2 group lower velocities) Weatherby brass, OAL 3.201" group size .164"

    Average fps


    Group


    Close up of group


    Group size .164"

    _________________
    A GUN WRITER NEEDS:
    THE MIND OF A SCHOLAR
    THE HEART OF A CHILD
    THE HIDE OF A RHINOCEROS

  • #2
    Hot 257 WB

    BT, nice job on the group, makes me want to get into the Weatherby mode. What are you planning to shoot with this or is this your target gun. How big of an animal do you think, caribou, sheep, or bigger? Thanks, Mark

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    • #3
      Originally posted by markopolo50 View Post
      BT, nice job on the group, makes me want to get into the Weatherby mode. What are you planning to shoot with this or is this your target gun. How big of an animal do you think, caribou, sheep, or bigger? Thanks, Mark
      I have killed two white tail bucks so far and this is my hunting load. I use the rifle for hunting not targets. Good for a lot of hunting applications.
      A GUN WRITER NEEDS:
      THE MIND OF A SCHOLAR
      THE HEART OF A CHILD
      THE HIDE OF A RHINOCEROS

      Comment


      • #4
        257 wb

        Beartooth, thanks for the information. This round sounds great for deer, antelope, caribou. A little light for elk and bigger I think, although the foot pounds for that bullet at that speed must be high. Looking at Wb web site right now, also see Remington chambers for that also. Nice looking target, Mark

        Comment


        • #5
          beartooth ???

          Since you are not affraid to drop the dough for a nice Weatherby I thought you may be able to chime in on the 240, I currently use a 223 for varmits and target but have been desiring to spend money on unneeded wants and have been looking at the 240 Weatherby as an option. Remarks from anyone with knowledge on these would be appreciated.
          19' Lowe Roughneck
          90/65 Honda 4 stroke
          Outboard Jet

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          • #6
            Thanks

            BT, thanks for the info, will try it in my 257 Wby Mark 5.

            Comment


            • #7
              Great job BT, that is an great load! Which GS's are you using and what's their BC?
              "You will never know how much it cost my generation to preserve your freedom. I hope you make good use of it."
              ~ John Quincy Adams

              Comment


              • #8
                Originally posted by MontanaRifleman View Post
                Great job BT, that is an great load! Which GS's are you using and what's their BC?
                100gr GS HV Moly BC .430
                A GUN WRITER NEEDS:
                THE MIND OF A SCHOLAR
                THE HEART OF A CHILD
                THE HIDE OF A RHINOCEROS

                Comment


                • #9
                  Originally posted by Lowe & Slow View Post
                  Since you are not affraid to drop the dough for a nice Weatherby I thought you may be able to chime in on the 240, I currently use a 223 for varmits and target but have been desiring to spend money on unneeded wants and have been looking at the 240 Weatherby as an option. Remarks from anyone with knowledge on these would be appreciated.
                  240Wby is for sure an awesome cartridge and it will reach out and nail those varmints.
                  A GUN WRITER NEEDS:
                  THE MIND OF A SCHOLAR
                  THE HEART OF A CHILD
                  THE HIDE OF A RHINOCEROS

                  Comment


                  • #10
                    Beautiful groups, as usual...

                    Have you done anything to the stock rifle? Do you have an Accubrake? Have you seen any difference with variance of the OAL?
                    I'm shooting the 115gr Ballistic Silvertips and 120gr Partitions, same powder, primer, brass and OAL (if I recall correctly). I am getting 2.2-2.6" groups at 300yds with the BT. Haven't hooked up the Chrony as its kinda cold around here right now, but I'm at max + 0.5gr. It might tighten up the group to use a real benchrest. I just haven't done so yet as I'm not going to have a lead sled in the field.

                    Out of curiosity why go for the Grand Slam as opposed to a Partition or the A-frame? Cost, accuracy, availability or "just wanted to"? Be certain to give the after action reports when you are successful in the field.

                    Comment


                    • #11
                      Originally posted by IceKing02 View Post
                      I am getting 2.2-2.6" groups at 300yds with the BT.
                      Consistent 2.2 to 2.6 inch groups at 300 yards from a 257 Weatherby to me means two things – 1st, you’re a very experienced and capable rifleman able to read both wind and mirage very well and 2nd, you have a well set up, match grade rifle. Consistently shooting .164 inch groups at 100 yards isn’t the norm and for most, a group that size comes along every now and then, except if you’re one hell of a shot and possess a match grade rifle with match grade component ammo – then it comes along a little more often and the rifleman is normally shooting competitively when possible. Keep up the good work.

                      Comment


                      • #12
                        Originally posted by IceKing02 View Post
                        Have you done anything to the stock rifle? Do you have an Accubrake? Have you seen any difference with variance of the OAL?
                        I'm shooting the 115gr Ballistic Silvertips and 120gr Partitions, same powder, primer, brass and OAL (if I recall correctly). I am getting 2.2-2.6" groups at 300yds with the BT. Haven't hooked up the Chrony as its kinda cold around here right now, but I'm at max + 0.5gr. It might tighten up the group to use a real benchrest. I just haven't done so yet as I'm not going to have a lead sled in the field.

                        Out of curiosity why go for the Grand Slam as opposed to a Partition or the A-frame? Cost, accuracy, availability or "just wanted to"? Be certain to give the after action reports when you are successful in the field.
                        I have done nothing to this Accumark, it is just as Weatherby builds them. I do not have an Accubrake. Yes, OAL makes a difference, when at 3.210 or 3.209" the pressure was up and groups not as tight as when my OAL is 3.200-3.201"

                        The GS is not a Grand Slam. The GS HV is a custom bullet made in South Africa. Availability is good, in fact I order them from a place in Alaska and get them with in 3-4 days from time of order. When hunting with my friend Jerry last week I was using the TSX and he was using the GS and the GS blood shot less meat and the wound channel was very impressive.
                        A GUN WRITER NEEDS:
                        THE MIND OF A SCHOLAR
                        THE HEART OF A CHILD
                        THE HIDE OF A RHINOCEROS

                        Comment


                        • #13
                          To put this GS HV 100gr bullet in perspective having a BC of .457 at 3717fps the following tells the story.

                          Energy:
                          Muzzle 3065
                          100yds 2675
                          200yds 2330
                          300yds 2025
                          (over 2,000 ft pounds of energy out to 300yds for a 100gr bullet!!!!)
                          400yds 1754
                          500yds 1514
                          600yds 1301
                          (a 100gr bullet having enough energy to kill a deer at 600yds!!!!)

                          Velocity retained at 600yds - 2421fps

                          Zero is - 330

                          Point Blank is 425yds

                          Hold on top shoulder at 450yds and good out to 550yds.

                          Two months from now I have scheduled a shooting time on a government shooting range at a research lab and will be doing 500yd group tests with this bullet. Should be fun and interesting.
                          A GUN WRITER NEEDS:
                          THE MIND OF A SCHOLAR
                          THE HEART OF A CHILD
                          THE HIDE OF A RHINOCEROS

                          Comment


                          • #14
                            Originally posted by beartooth View Post
                            Two months from now I have scheduled a shooting time on a government shooting range at a research lab and will be doing 500yd group tests with this bullet. Should be fun and interesting.

                            That's very cool BT. Will be very interested in your results. have you looked at the HP bullets. The site said that they are being redesigned and they look like they might be ballistically better than the HV's?
                            "You will never know how much it cost my generation to preserve your freedom. I hope you make good use of it."
                            ~ John Quincy Adams

                            Comment


                            • #15
                              Originally posted by MontanaRifleman View Post
                              That's very cool BT. Will be very interested in your results. have you looked at the HP bullets. The site said that they are being redesigned and they look like they might be ballistically better than the HV's?
                              Yes, I did notice them and even if they do have a better BC, the HV is the bullet to use for hunting.
                              A GUN WRITER NEEDS:
                              THE MIND OF A SCHOLAR
                              THE HEART OF A CHILD
                              THE HIDE OF A RHINOCEROS

                              Comment

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