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Ball trajectory
- Thread starter Salty
- Start date
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harleynut
40 Cal
Absolutely!!The #13 bore cleaner is a much better lube than cleaner. Don't waste it cleaning.
I just ordered some.
Thanks
Balls/bullets do not rise! The sec they exit the muzzle they start dropping! They cross the line of sight twice and where they cross the line of sight the second time is the zero range!
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That is correct.
harleynut
40 Cal
Let soak over night dab dry when loading i compete and this has worked with one other additive 8) for years
longcruise
70 Cal.
I thought I would post these examples of trajectory for the possible use by our members.
But first, let me say that I don't sight my guns according to these charts and would not suggest anyone else do it. This is just to illustrate a concept. All of the data below is based on correct ball diameters and ballistic coefficients. All assume a front sight height of .70" above the centerline of bore (That is pretty close for most ml guns). Since this is hunting scenario data, I used 1750 fps for all three ball sizes. This is not necessarily on the nose for everyone's guns but once again it is very typical.
I call this the "three inch rule" because if you sight your gun to impact about 1.5" high at 50 yards your POI will be within a three inch circle between muzzle and 100 yards. It's not etched in stone and you can see variations in the data below. OTOH, If I called it the 4" rule it would be right on!
1. .445 ball
Range Elevation Velocity
0 yds -0.70 in 1750 fps
25 yds 1.09 in 1428 fps
50 yds 1.81 in 1182 fps
75 yds 0.97 in 1029 fps
100 yds -1.86 in 934 fps
125 yds -7.01 in 863 fps
---------------------------------------------
2. .495 ball
Range Elevation Velocity
0 yds -0.70 in 1750 fps
25 yds 0.93 in 1456 fps
50 yds 1.52 in 1221 fps
75 yds 0.66 in 1064 fps
100 yds -2.09 in 966 fps
125 yds -7.05 in 895 fps
------------------------------------------
3. .535 ball
Range Elevation Velocity
0 yds -0.70 in 1750 fps
25 yds 0.91 in 1475 fps
50 yds 1.51 in 1250 fps
75 yds 0.71 in 1090 fps
100 yds -1.89 in 990 fps
125 yds -6.62 in 918 fps
But first, let me say that I don't sight my guns according to these charts and would not suggest anyone else do it. This is just to illustrate a concept. All of the data below is based on correct ball diameters and ballistic coefficients. All assume a front sight height of .70" above the centerline of bore (That is pretty close for most ml guns). Since this is hunting scenario data, I used 1750 fps for all three ball sizes. This is not necessarily on the nose for everyone's guns but once again it is very typical.
I call this the "three inch rule" because if you sight your gun to impact about 1.5" high at 50 yards your POI will be within a three inch circle between muzzle and 100 yards. It's not etched in stone and you can see variations in the data below. OTOH, If I called it the 4" rule it would be right on!
1. .445 ball
Range Elevation Velocity
0 yds -0.70 in 1750 fps
25 yds 1.09 in 1428 fps
50 yds 1.81 in 1182 fps
75 yds 0.97 in 1029 fps
100 yds -1.86 in 934 fps
125 yds -7.01 in 863 fps
---------------------------------------------
2. .495 ball
Range Elevation Velocity
0 yds -0.70 in 1750 fps
25 yds 0.93 in 1456 fps
50 yds 1.52 in 1221 fps
75 yds 0.66 in 1064 fps
100 yds -2.09 in 966 fps
125 yds -7.05 in 895 fps
------------------------------------------
3. .535 ball
Range Elevation Velocity
0 yds -0.70 in 1750 fps
25 yds 0.91 in 1475 fps
50 yds 1.51 in 1250 fps
75 yds 0.71 in 1090 fps
100 yds -1.89 in 990 fps
125 yds -6.62 in 918 fps
Great useful information. Thank you.
Although there are some folks out there who will claim every question has been asked and answered.
Although there are some folks out there who will claim every question has been asked and answered.
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Good info! Thanks @longcruise
longcruise
70 Cal.
I try to be careful about presenting "data" to ML groups. It usually results in responses implying that it's not "traditional" or that our forefathers didn't need chronographs and technology, etc., etc.Great useful information. Thank you.
Although there are some folks out there who will claim every question has been asked and answered.
But, what I like about it is tech and data can illustrate how simple it really is for the sake of newcomers to the sport. It actually helps shake off the notion among many newcomers that it's so very complicated.
@harleynut what powder charge do you use?
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I love that stuff!
harleynut
40 Cal
50-55 pre measured grains in my 45 and 62 grains in my 50
I have also found this to be true.
