In the english system, we call one minute of angle a MOA. In the world of guns, we find that by coincidence, 1 MOA at 100 yards (300 feet) is about 1 inch.
If you were to shoot a target that was 100yards away and the bullet did not hit where you were aiming, you would want to adjust the scope on the rifle.
We way we do this is measure how far the bullet is high or low / left or right and adjust the elevation or windage on our scope. There is a knob you can turn and it will most likely say one click = 1/4 MOA.
So we find that the bullet hit 1" too low at 100 yards. That is 1 MOA. Since we need the point of impact to move up 1", we turn the elevation knob 4 clicks in the UP direction. If the bullet struck 2" to the left, we would move the windage 8 clicks RIGHT because we need to move the point of impact to the right.
If you were to shoot a target that was 100yards away and the bullet did not hit where you were aiming, you would want to adjust the scope on the rifle.
We way we do this is measure how far the bullet is high or low / left or right and adjust the elevation or windage on our scope. There is a knob you can turn and it will most likely say one click = 1/4 MOA.
So we find that the bullet hit 1" too low at 100 yards. That is 1 MOA. Since we need the point of impact to move up 1", we turn the elevation knob 4 clicks in the UP direction. If the bullet struck 2" to the left, we would move the windage 8 clicks RIGHT because we need to move the point of impact to the right.
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It turns out there is an even easier way to zero your scope (calibrate the crosshairs). You must use a shooting bench and have a way to clamp the rifle so it doesn't move. Hold the rifle normally and shoot at your taget from the bench. Clamp the rifle so it can't move and aim the cross hairs at the center of your target. Now without moving the rifle, adjust the windage and elevation knobs until the crosshairs line up with the place your bullet hit.
Sometimes you can't see the point of impact clearly through the scope. In this case, make sure the rifle is not pointed down range and walk to the target and make a mark with a pen or a marker that you will be able to see.
Sometimes you can't see the point of impact clearly through the scope. In this case, make sure the rifle is not pointed down range and walk to the target and make a mark with a pen or a marker that you will be able to see.
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Here's how to do a one shot zero. You MUST make sure the rifle doesn't move while you adjust the windage and elevation. It is often helpful if you have a 2nd person adjust the knobs while you hold the rifle still.
https://m.youtube.com/shorts/nbqXs2V2oDI
Fun garden inspiration when the weather finally allows for gardening!!!!
Fun garden inspiration when the weather finally allows for gardening!!!!
YouTube
Kid's Garden Teepee
Kids love secret hideaways and places that allow them to use their imagination in a fun and playful way. Creating a teepee in your garden is easy-peasy. All ...
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CAUTION PARENTS: Today's video might be a pass for younger kids. 1) it is about how politics big business and government work 2)it has 4 dirtywords in it. Preview this first before showing to the kiddos. Despite the dirty words, I think it is important for kids to know some geo-politics.
https://www.youtube.com/watch?v=QgydTdThoeA
https://www.youtube.com/watch?v=QgydTdThoeA
YouTube
The Banana Republics
this was supposed to be like three minutes long
Follow me on Twitter:
https://twitter.com/Sam_ONella
Intro and outro song:
"Brandenburg Concerto No. 4 in G, Movement I (Allegro), BWV 1049" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons:…
Follow me on Twitter:
https://twitter.com/Sam_ONella
Intro and outro song:
"Brandenburg Concerto No. 4 in G, Movement I (Allegro), BWV 1049" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons:…
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Adding to the above. There is Cement, Mortar and Concrete.
Cement is the "glue" that is made in the video above.
If you mix cement with sand as a filler, you get mortar.
if you mix cement with small stones you get concrete.
Worth saying, mortar is used to hold bricks and concrete blocks together. You will find two types... S and NS. S is used underground and is called structural. NS is used above ground and is called Non Structural.
Cement is the "glue" that is made in the video above.
If you mix cement with sand as a filler, you get mortar.
if you mix cement with small stones you get concrete.
Worth saying, mortar is used to hold bricks and concrete blocks together. You will find two types... S and NS. S is used underground and is called structural. NS is used above ground and is called Non Structural.
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How tractors connect to plows and mowers.
The first tractors simply connected using a drawbar that is similar to a pintle hitch or a ball hitch. In the 1920's a man named Furguson came up with a 3 point link system that made sure the tractor couldn't do a wheelie if the plow got stuck and it also had two lifting arms to raise and lower the plow or mower.
Old tractor's 3 point hitch height might float down over an extended time and it was common to connect chain to the hitch so the plow coulnd't get too low. Modern tractors have a hydraulic valve that measures the height and keeps the hitch height as set by a lever near your right hip.
The first tractors simply connected using a drawbar that is similar to a pintle hitch or a ball hitch. In the 1920's a man named Furguson came up with a 3 point link system that made sure the tractor couldn't do a wheelie if the plow got stuck and it also had two lifting arms to raise and lower the plow or mower.
Old tractor's 3 point hitch height might float down over an extended time and it was common to connect chain to the hitch so the plow coulnd't get too low. Modern tractors have a hydraulic valve that measures the height and keeps the hitch height as set by a lever near your right hip.
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Look carefully at this 6 spline PTO coupler. It has a notch in the center. The purpose of this notch is to allow a small pin on the drive shaft to lock on so the drive shaft won't slip off. This pin is usually spring loaded and you push it to one side with your thumb when connecting the shaft.
The PTO shafts are now required to be covered with sleeve that does not rotate. It is very important that we do not remove this sleeve. Many men have been injured or killed when a sleeve got caught on an unguarded PTO shaft.
The PTO shafts are now required to be covered with sleeve that does not rotate. It is very important that we do not remove this sleeve. Many men have been injured or killed when a sleeve got caught on an unguarded PTO shaft.
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How fast should a PTO shaft turn? It is usually directly coupled to the engine, so every tractor has a tachometer to tell you the speed of the engine. And every tachometer has a mark on it to indicate when the PTO will turn 540RPM. This is really important when running things like mowers because if the blades don't move fast enough it won't cut grass.
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Yesterday we discussed the three point hitch and how we attach things to the tractor. Today we discuss how we power the things we pull behind the tractor. These things might include mowers or augers.
The first tractors used an exposed flywheel with a a flat belt. Later the industry standardized on a PTO shaft. PTO is Power Take Off.
The first tractors used an exposed flywheel with a a flat belt. Later the industry standardized on a PTO shaft. PTO is Power Take Off.
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