AR10Ts Official Ask Lebben a Question Thread...

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12 years 1 week ago #21280 by 10before15
Replied by 10before15 on topic AR10Ts Official Ask Lebben a Question Thread...
Awesome, :clap:
Time to buy a new tool for the rifle!

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12 years 1 week ago #21308 by LebbenB
Replied by LebbenB on topic AR10Ts Official Ask Lebben a Question Thread...
The actual nomenclature for those devices is "Angle Degree Indicator." Make sure it also gives you the cosine of the angle.

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12 years 1 week ago #21310 by Sharkey
Replied by Sharkey on topic AR10Ts Official Ask Lebben a Question Thread...

LebbenB wrote:

...what formula should I use to help calculate and adjust for elevation, and/or slope of bullet travel during flight? I was thinking c2-a2=b2(b2=actual height).

Find the angle in degrees of the target you're shooting at. Find that angle's cosine. Multiply the cosine by the raw distance of the target. The product is the "actual" range to the target

Example: You have a mountain sheep on a ridgeline. Your laser rangefinder gives you a raw distance of 500 yds. The clinometer device you have on your scope tells you you're shooting at a 30 degree angle and that the cosine of that angle is .87. (These devices are clamp on and are available at places like Brownells and Midway.) Multiplying 500 by .87 gives you a distance of 435 yds.


OK. I just read all this and am feeling a little woozie... could be brain freeze... :laugh:

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12 years 1 week ago #21317 by LebbenB
Replied by LebbenB on topic AR10Ts Official Ask Lebben a Question Thread...

OK. I just read all this and am feeling a little woozie... could be brain freeze... :laugh:

Every press of the trigger is a celebration of mathematics and physics.

And Dr. Harriston, who always said I wasn't paying attention in Physics. If you're reading this, I'm holding up my middle finger at you right now..."Sleeping in class," indeed.

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12 years 1 week ago #21393 by Sharkey
Replied by Sharkey on topic AR10Ts Official Ask Lebben a Question Thread...
What is it like to be retired and NOW have your son in the mix and taking up the torch - kickin ass and takin names? :thumbs:

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12 years 1 week ago #21422 by LebbenB
Replied by LebbenB on topic AR10Ts Official Ask Lebben a Question Thread...
On a personal level, it feels good. I'm just happy that he's doing something that he likes and that he's having a good time doing it.

Hell, he coulda been a garbage man but if it made him happy, then that'd be fine with me too.

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12 years 6 days ago #21585 by Wizard509
Replied by Wizard509 on topic AR10Ts Official Ask Lebben a Question Thread...
Does a carpenter's level REALLY "level?"

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12 years 6 days ago #21607 by LebbenB
Replied by LebbenB on topic AR10Ts Official Ask Lebben a Question Thread...
A carpenter's level doesn't actually level a surface, if that's what you're asking. It simply shows if a surface is horizontal - level - or vertical (plumb).

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12 years 6 days ago - 12 years 6 days ago #21612 by Wizard509
Replied by Wizard509 on topic AR10Ts Official Ask Lebben a Question Thread...
Yeah, they indicate level or plumb by referencing a vertical line that passes through the center point of the Earth.

I had someone ask me the question several years ago. After thinking about it for a while, my response was, "No, they do not level, they actually perpendicular."

Now, for an AR10-related question...

I use a Rail Vise when I work on my AR15s. I used it with the AR10 for the initial cleaning and while it worked okay, I'm thinking that better options are likely available. What recommendations can you provide?

Thanks!
Last edit: 12 years 6 days ago by Wizard509.

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