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Disagreement about bullet drop

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  • #31
    longrange1
    Senior Member
    • Dec 2015
    • 1032

    Originally posted by ozarkpugs@gmail.com
    Because they shoot for the distance between the barrel and target gravity pulls on horizoal not down to the ground so if up hill angle is steep enough it could be 400 yards to Target but 300 yards to point under the target which is on same horizoal plane as the barrel

    Sent from my Moto G Play using Tapatalk


    I apologize I miss read your post...I missed the raised target to 400yds part.


    Sent from my iPhone using Tapatalk

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    • #32
      ozarkpugs@gmail.com
      Member
      • Mar 2017
      • 173

      People don't seem to realize if gravity pulled objects down to the ground no one would roll down a hill they would be penned to the ground

      Sent from my Moto G Play using Tapatalk

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      • #33
        longrange1
        Senior Member
        • Dec 2015
        • 1032

        Originally posted by ozarkpugs@gmail.com
        People don't seem to realize if gravity pulled objects down to the ground no one would roll down a hill they would be penned to the ground

        Sent from my Moto G Play using Tapatalk


        I agree.


        Sent from my iPhone using Tapatalk

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        • #34
          jimmykan
          Veteran Member
          • Jan 2008
          • 3074

          If the straight line distance to target is 300 yards, for both the horizontal shot and the 45-degree-angled shot, then the effective horizontal distance for the angled shot is actually 300*cos(45) which is about 158 yards, you would dial in or hold-over your elevation for 158 yards, which probably is just zero correction.

          If the horizontal distance to target is 300 yards, for both the horizontal shot and the 45-degree-angled shot, then the straight line distance for the angle shot is actually 300/cos(45) which is about 571 yards. But you would just use your 300 yard elevation value for that shot.

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          • #35
            smoothy8500
            Veteran Member
            • Sep 2009
            • 3838

            Here's a visual I found to compliment jimmykan's explaination.
            Last edited by smoothy8500; 10-11-2017, 10:31 PM.

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            • #36
              RestrictedColt
              Senior Member
              • Feb 2017
              • 773

              When shooting downward you'll have less drop.

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              • #37
                ar15barrels
                I need a LIFE!!
                • Jan 2006
                • 56983

                Originally posted by RestrictedColt
                When shooting downward you'll have less drop.
                When shooting upward OR downward at the same distance and same up/down angle, you have to make the same correction to your elevation to hit where you aim.
                Randall Rausch

                AR work: www.ar15barrels.com
                Bolt actions: www.700barrels.com
                Foreign Semi Autos: www.akbarrels.com
                Barrel, sight and trigger work on most pistols and shotguns.
                Most work performed while-you-wait.

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                • #38
                  WMG
                  Senior Member
                  • Jul 2016
                  • 1159

                  Originally posted by RestrictedColt
                  When shooting downward you'll have less drop.
                  that's just what a lot of old timers used to say , back before we had science
                  up-down doesn't matter , it be the same , measure to the target as if on a horizontal plane
                  Last edited by WMG; 10-12-2017, 9:15 PM.
                  If you start thinking like a Free Man
                  You'll begin to feel like a Free Man
                  And pretty soon you'll begin acting like a Free Man

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                  • #39
                    dwalker
                    Veteran Member
                    • Jul 2014
                    • 2714

                    There are a couple of apps, Strelok and Shooter for example, that a few of the folks posting here should get and play around with to better understand why a bullet goes where it goes.
                    Fear is the spare change that will keep you broke

                    Call him run-like-hell-when-shtf-guy or dial-911-guy but NEVER call an unarmed man "Security".

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                    • #40
                      MJB
                      CGSSA Associate
                      • Sep 2010
                      • 5922

                      Originally posted by StuckInTheP.R.O.Ca
                      To put it simply. If you shoot at a horizontal target at say 400 yds and scored a bullseye, then shoot again at a target at 400 yds but at a 45 degree angle your shot will impact high compared to the horizontal level shot. Also it doesn't matter if the shot is up or down. It will still impact high compared to a level shot.
                      This is it.......
                      One life so don't blow it......Always die with your boots on!

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                      • #41
                        RestrictedColt
                        Senior Member
                        • Feb 2017
                        • 773

                        Since so many are saying that drop won't change between shooting straight, up, or down I assume we're talking about a different measurement of drop. Viewing through your scope and knowing what your drop is at 400 yards in a straight shot, that drop compensation will be different if shooting downward.

                        Anyone who thinks it won't be different should consider shooting straight down where there will be 0 drop to compensate for, so obviously anywhere between straight ahead and straight down will have a different amount of drop.

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                        • #42
                          MJB
                          CGSSA Associate
                          • Sep 2010
                          • 5922

                          It's all about gravity and not distance........ horizontal line is the true shooting distance.....
                          One life so don't blow it......Always die with your boots on!

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                          • #43
                            lordmorgul
                            CGN/CGSSA Contributor
                            • Jul 2016
                            • 1203

                            Science says flight time is what matters. Gravity acts on the bullet vs time. If linear distance is the same drop is the same.

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                            • #44
                              RestrictedColt
                              Senior Member
                              • Feb 2017
                              • 773

                              So if you're shooting straight down at a target 1000 yards away then you still have to compensate for bullet drop as if you were shooting straight ahead?

                              The answer is no, therefore the answer for any downward degree being the same as a straight horizontal shot is also no.

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                              • #45
                                ar15barrels
                                I need a LIFE!!
                                • Jan 2006
                                • 56983

                                Originally posted by RestrictedColt
                                Since so many are saying that drop won't change between shooting straight, up, or down
                                I don't see anyone saying that.
                                What I have been saying is that the amount of correction is the same shooting uphill or downhill angle.
                                For most situations, this is usually less than 45 degrees from level.

                                Your example of shooting straight down is so far out there on the fringe as to be ignored because there are so few places where you can setup a target 1000yds straight down from you and then shoot at it.
                                Shooting while hanging on vertical rock face is very impractical.
                                It also makes it really hard to save your brass.

                                I have yet to find a place where it's safe to shoot straight up.
                                Last edited by ar15barrels; 10-13-2017, 12:18 AM.
                                Randall Rausch

                                AR work: www.ar15barrels.com
                                Bolt actions: www.700barrels.com
                                Foreign Semi Autos: www.akbarrels.com
                                Barrel, sight and trigger work on most pistols and shotguns.
                                Most work performed while-you-wait.

                                Comment

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