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Help sighting in

Old 11-14-2007, 07:13 AM
  #1  
Spike
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Default Help sighting in

Does anyone know the trajectory of an inline .50 cal? I am trying to find the distance I need to sight in my Muzzleloader. Someone said 1.5 inches high at 100 yds, but where will that put my sabot at 150 yds? Or just let me know where you sight yours in at and how much drop is expected. Thanks

Oh and Im using 2 50 grain pyrodex powder pellets and 245 grain sabot
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Old 11-14-2007, 08:15 AM
  #2  
Nontypical Buck
 
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Default RE: Help sighting in

Shoot the rifle at 150 yards and you will know. And that is really the only way to know for certain how your rifle and load will behave at a given range.
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Old 11-14-2007, 08:40 AM
  #3  
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Default RE: Help sighting in

Underclocked is dead on here. All the charts in the world will not tell you exactly what the rifle will do at those extreme distances. Some people sight in three inches high at 100 yards. Then you have to worry about where it hits when that deer walks out at 35 yards in front of you.

It sounds like you are facing some extreme distance shooting. I would go to the range sight in at 100 yards first. Then when I can hit where I aim each and every time at that distance, try something out there at 150 yards.

When I was shooting my Black Diamond XR at 150 yards one afternoon, it was sighted in at 100 yards. We were trying to hit a paper dinner plate in the center of the circle. I was aiming over the top of that plate and then some. Actually the fat part of my scope cross hair became an excellent source of where to hold. I forget now the drop, but once I learned it and the wind, the rest was not too hard. But if that shot presented itself today to me, I would be very reluctant to shoot that far as I do not practice it enough. I have a general idea of where I would hold mind you, but EVERYTHING would have to be perfect.
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Old 11-14-2007, 08:58 AM
  #4  
Spike
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Default RE: Help sighting in

Thanks for the info, I think I will just sight it in dead on at 100 yds and move to 150 to see the drop. If it drops too much for my comfort, Ill stick to 100 yds or less.
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Old 11-14-2007, 08:58 AM
  #5  
Nontypical Buck
 
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Default RE: Help sighting in

ORIGINAL: solobowhunter

Does anyone know the trajectory of an inline .50 cal? I am trying to find the distance I need to sight in my Muzzleloader. Someone said 1.5 inches high at 100 yds, but where will that put my sabot at 150 yds? Or just let me know where you sight yours in at and how much drop is expected. Thanks

Oh and Im using 2 50 grain pyrodex powder pellets and 245 grain sabot
You have to find the Ballistic Coefficient of your bullet and the MV of your charge. If your shooting PowerBelts that is here:

http://www.powerbeltbullets.com/docs/PBB26inchballistics.pdf

You have to sight in 3.3 inches high at 100 yards to be dead on a 150 with the 245g PB. If you want to sight in a 100, the 245g PB is:
BC=.140
MV=1900 fps
100 yard sight in

Drop these into here:

http://www.sav10ml.com/pages/load_data/traj_basic_dat.html

You get the following:

50 yards .9 inches high
100 yards dead on
150 yards -5.2 inches low
200 yards -16.2 inches low
250 yards -34.4 inches low.
Recommend you sight in 3" high at 100 yards and your shooting thru a 6" pipe from 0 out to 150 yards, just aim and pull the trigger, right behind front shoulder.


Chap Gleason
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Old 11-14-2007, 09:23 AM
  #6  
Giant Nontypical
 
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Default RE: Help sighting in

I guess what you need to understand is that each different powder load and each different bullet will have a different trajectory. You did not tell us what barrel length what kind of powder and what bullet.
An example of the differances; with a 28 inch barrel a load of 3 50gr pellets and a 50/40 200gr Shock Wave, get 2300 FPS, the trajectory for this load is 3 inches high at 100yd and 3 inches low at 200 yds.
Compare this to a Power Belt of 300 gr at 1400 FPS "0" at 100 yds will drop 20 inches out of the same barrel with [if I remember correctly 80gr RS] the load it works best at in my gun. Lee
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Old 11-14-2007, 09:31 AM
  #7  
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Default RE: Help sighting in

ORIGINAL: Underclocked

Shoot the rifle at 150 yards and you will know. And that is really the only way to know for certain how your rifle and load will behave at a given range.
Right On!...........In order to learn how to castrate, you have to cut alot of BA***!
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