Help with long range shooting

Would someone please help me? I am trying find a chart so that I can know how many clicks on my scope for shot at:

Trajectory Tables: 100 Yards + 0.88 200 = 0 300 = -5.26 400= -16.12 500= -34.14

Scope 6.5X20 1 click on scope = 1/4 inch at 100 yards

22-250 Rem, 55 grain hornady V-max Varmint express Muzzle Velocity 3680 100 yards=3265 200=2876 300=2517 400=2183 500=1887

Energy foot - pounds muzzle=1654 100 yards=1302 200=1010 300=772 400=582 500=435 Thank you so much for any input. Dave PA

A good rule of thumb would be to divide the drop by the first digit of the range (in hundreds). Then, because your scope has 1/4 MOA clicks, multiply the result by four. Bill Van Houten (USA Ret) 'No matter how hard you try, you can't throw a potato chip very far.'

I think I got this from my Sierra reloading manual.

First you need to know the ACTUAL bullet drop at each distance.

With a muzzle velocity of 3680 and a B.C. of .250 I find:

You need to know the sight height height I'll assume 1.50 inches for a standard scope

Using a constant of 95.493 x ( (sight height - drop at range) / range in yards)

the difference between the two is 2.282 inches multiply this number by 4 (clicks per inch) = 9.128 CLICKS

I hope this helps. You may want to throw this into Exel for speed.

If 1 click on scope = 1/4 inch at 100 yards,

then 1 click on scope = 1/8 inch at 50 yards 1 click on scope = 1/2 inch at 200 yards 1 click on scope = 3/4 inch at 300 yards 1 click on scope = 1 inch at 400 yards 1 click on scope = 1 and 1/4 inch at 500 yards

thus,

nada on 200 yards

Or am I totally klost in my calculations?

I just aim 'about so so' much above

You just went the wrong direction for the distances past your 200 yd. zero. Bill Van Houten (USA Ret) 'No matter how hard you try, you can't throw a potato chip very far.'

I just got this rifle, and when I test fire at 300 yards I need 11 clicks. It should be 7 clicks. Is 7 right?

Perhaps you could tell me from where you are getting your ballistic numbers from? I think from what you are saying, you are reading ASSUMED velocities OR your 200 yard zero is not EXACT.

In my earlier post I ran YOUR numbers through my ballistic calculator and based on your numbers found that the bullet has a Ballistic Coefficient of .250 . With your numbers and using the formula in my earlier post a change from 200 yards to 300 yards will be a change from -2.18 to -4.3 inches for a total of 2.12 inches. With 4 clicks per inch that requires 8 and 1/2 clicks. BUT WAIT, is your 200 yard zero really ZERO or is it 1 inch high at 200 yards??? Is the B.C. really .250 or is it .245 ??? What is the REAL muzzle velocity, could you be off by 50 or 100 fps ??? When you dialed in your scope which direction was your last move, up or down?? The scope most likely has some backlash. Is one click .250 inch or .240 ?? If using the formula in my earlier post yields a move of 8 1/2 clicks and YOU really need 11 clicks WHO CARES ?? There is some MINOR error in one of the parameters. Accept it, it is very minor, learn the true number of clicks and that IS THE NUMBER.

good luck,

Unfortunately the ballistic tables don't do the shooting. Your MV could be different by 100 fps or more. Many of the bullet makers rate their BC's a smidge high for real world use. The bottom line is that you'll need to do what people that shoot long range competition do. Lay down on the 300, 600, 800,900,1000 yard line (or whatever distance you're shooting) and shoot! Count your clicks from zero. Record same. Create a profile for your rifle and load. Remember when the temps take a dump into winter, your MV slows, and your drop increases, especially beyond 300. Then don't forget wind drift. Again, the book says, but you still need to lay on the line and shoot to really find out.