Line Of Sight vs True Ballistics Range

[Briar Friar]

Please school me. LOS vs TBR

I understand ballistics ranging is different than line of sight due to trajectory path being greater but...

What are some of yalls real world applications and experiences? When would TBR be shorter than LOS distance?

I just bought a Leupold RX-1200i TBR/W rangefinder and its got TBR and LOS settings.

Thanks in advance.

[randal]

Please school me. LOS vs TBR

I understand ballistics ranging is different than line of sight due to trajectory path being greater but...

What are some of yalls real world applications and experiences? When would TBR be shorter than LOS distance?

I just bought a Leupold RX-1200i TBR/W rangefinder and its got TBR and LOS settings.

Thanks in advance.

Wondering as well.. I have tried mine in building with both, shot the bottom and top of building but the yardage didn't change much.. this was around 200-300 yards

[gonehuntin68]

TBR will be shorter any time your shooting uphill or downhill

[Briar Friar]

TBR will be shorter any time your shooting uphill or downhill

Thank you! Im still trying to wrap my mind around it. Mountain hunting seemed the most applicable for TBR.

[Tom]

gravity runs perpendicular to the surface of the earth (straight down) so the maximum affect of gravity would be to shoot flat.....if you shoot uphill or downhill the gravity will have less of an effect so you will need less elevation compensation....so shoot low whether you are shooting uphill or downhill.......

[Tom]

gravity runs perpendicular to the surface of the earth (straight down) so the maximum affect of gravity would be to shoot flat.....if you shoot uphill or downhill the gravity will have less of an effect so you will need less elevation compensation....so shoot low whether you are shooting uphill or downhill.......

my mouth is usually behind my brain at times so my explanations are not always the best....but the formula is SIN of the Angle is the effect of gravity....so if you shoot at 45° up or down the effect of gravity is going to be 70.7% of what it would be shooting at 90°......shoot low at angle up or down.

[westtexducks]

Line Of Sight vs True Ballistics Range

Best way I know how to describe it is think of a triangle from school. Think of your bullets trajectory as being B in the picture. That is always longer aka line of sight range than A your true ballistic range. The higher the angle of shot either up or down the less affect gravity has on the bullet. Another way to think of it is if the deer was directly straight in front of you suspended what distance would he be? That is your ballistic range and the proper hold over that needs to be applied and is always shorter than line of site. Aim as if the deer is standing straight in front of you. You basically solve for A if you know B using calculus but most rangefinders these days do it for you


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[TexMax]

gravity runs perpendicular to the surface of the earth (straight down) so the maximum affect of gravity would be to shoot flat.....if you shoot uphill or downhill the gravity will have less of an effect so you will need less elevation compensation....so shoot low whether you are shooting uphill or downhill.......

Get what you're saying but that is a confusing way to describe it. Gravity is gravity it does no more or less in any scenario. Shoot flat distance.

[JakeGraves]

Gravity only pulls straight down along the line A in Westexducks right angle drawing. Line B would be the hypotenuse or line of sight. Since gravity only pulls straight down, it only affects line A when projectile travels line B.
Projectile will always impact high whether shooting uphill or downhill as compared to line of sight if this difference is not calculated.

[Briar Friar]

Tom...I immediately understood the gravity of your first explanation. Thank you!

Randal, TexMax and Jake...Thank Yall.

WestTex...Thank you for the diagram and explanation.

God bless!