Ballistics answer

[RJH1]

I saw the thread on ballistics and have the answer for most highpowered rifles.

2" high at 100= 0 at 200, -8"to10" at 300, -24ish at 400.

This holds true for most rifles, 223, 243, 7-08, 308, 270, 7mm mag, 3006, 300 mag, etc. While there will be some variance, this has been proven out and is a fairly reliable rule of thumb and can get you close, although for your rifle you will have to shoot it at these ranges for your exact drop/come ups.

[bboswell]

Ballistics answer

Really?

At 400 here is over 9" difference between my 308 and my 7 mag.

That's hardly close enough for hunting accuracy....

[RJH1]

According to hornady many 7mm mag loads averages around 19 inches drop and 308 around 22 which is about 3 inches difference. Also if you reread the last paragraph I said close, rule of thumb, and you will need to try in your own rifle, not this is exact and you will be a highly trained long range shooter ready for all circumstances. Read and use a little common sense.....

[CADDOKILLER]

I saw the thread on ballistics and have the answer for most highpowered rifles.

2" high at 100= 0 at 200, -8"to10" at 300, -24ish at 400.

This holds true for most rifles, 223, 243, 7-08, 308, 270, 7mm mag, 3006, 300 mag, etc. While there will be some variance, this has been proven out and is a fairly reliable rule of thumb and can get you close, although for your rifle you will have to shoot it at these ranges for your exact drop/come ups.

Guess your idea of "close" and mine are way different

[RJH1]

Guess your idea of "close" and mine are way different

Would you expect a bore sighted rifle to be perfect, or close?

This was meant to help people understand where that need to be aiming as a starting place, but what the hell ever

[trophy8]

Would you expect a bore sighted rifle to be perfect, or close?

This was meant to help people understand where that need to be aiming as a starting place, but what the hell ever

Well it could very well cause a new shooter a big headache. Its not even close.

Way too many variables in bullet weight, barrel length, chamber specs, rate of twist, ammo type, all of which will have a hand in velocity which will change bullet drop. Then factor in sight in distance and elevation, barometric pressure, wind speed and direction.... See my point?

Each gun is different. Every type of ammo is different. And to follow those specs would be completely irresponsible. The effort is appreciated though.

[TacticalCowboy]

Well it could very well cause a new shooter a big headache. Its not even close.

Way too many variables in bullet weight, barrel length, chamber specs, rate of twist, ammo type, all of which will have a hand in velocity which will change bullet drop. Then factor in sight in distance and elevation, barometric pressure, wind speed and direction.... See my point?

Each gun is different. Every type of ammo is different. And to follow those specs would be completely irresponsible. The effort is appreciated though.

I think it was meant as a starting point. As was stated, a bore sighted rifle will get you "on paper". Sure, there could be something like 10" of difference between modern centerfire rifles and cartridges at 400 yards, but knowing you're going to be ROUGHLY 25" low at 400 yards is a good place to start.

I don't think the OP is saying to aim 20" over a deer's back at 400 yards and let er rip.. Y'all are missing that.

[RJH1]

Well it could very well cause a new shooter a big headache. Its not even close.

Way too many variables in bullet weight, barrel length, chamber specs, rate of twist, ammo type, all of which will have a hand in velocity which will change bullet drop. Then factor in sight in distance and elevation, barometric pressure, wind speed and direction.... See my point?

Each gun is different. Every type of ammo is different. And to follow those specs would be completely irresponsible. The effort is appreciated though.

Reread my original post and my follow up post, if you and a couple others still don't get it maybe you should take a course in reading comprehension.

[RJH1]

I think it was meant as a starting point. As was stated, a bore sighted rifle will get you "on paper". Sure, there could be something like 10" of difference between modern centerfire rifles and cartridges at 400 yards, but knowing you're going to be ROUGHLY 25" low at 400 yards is a good place to start.

I don't think the OP is saying to aim 20" over a deer's back at 400 yards and let er rip.. Y'all are missing that.

This

[howabouttheiris]

IMHO, If you are really planning on taking an animal at 400 yards you need to understand your rifle better than 'rules of thumb'. Buy or borrow a chronograph and get your velocity. Use it to produce a drop and windage chart. Verify the chart.

[LFD2037]

I saw the thread on ballistics and have the answer for most highpowered rifles.

2" high at 100= 0 at 200, -8"to10" at 300, -24ish at 400.

This holds true for most rifles, 223, 243, 7-08, 308, 270, 7mm mag, 3006, 300 mag, etc. While there will be some variance, this has been proven out and is a fairly reliable rule of thumb and can get you close, although for your rifle you will have to shoot it at these ranges for your exact drop/come ups.

Tough crowd!

[tradtiger]

As the OP advises, I'm sure rifles will vary from the posted drops. It so happens that those stated drops almost exactly happen to match actual shots by my rifle (Springfield .30-'06, with 150 grain Core-Lokt ammo).