The dead on at 25 yards and it will be 2" high at 100 is not accurate. This thinking does not compensate for large diameter objectives or high mounted scopes.

What if the center of the scope is 2" higher than the center of the barrel. At 25 yards you have made up the 2". At fifty, you are 2" high. At 75 another 2" and 100 another 2". Sure the bullet will drop within the 1st 100, but not enough to compensate for the 8" rise.

The only real way to know where it will hit is to shoot it at the range. I normally make sure I am 1.5-2 high at 100 which should put me in the vitals out to 275 with my .280, 7mm-08, .243, .270 etc.

Wayspring...You are correct...The 25 yard zerowas based on the line of sight being being 1.5" above the center of the bore, which was much more common before the current rage of oversized objective lens...Poor ol' Jack is probably spinning like a top in his grave seeing all of the ugly monstrosities that hunters are mounting on thier rifles these days... Nothing like ruining the lines of a fine hunting rifle and making it look like something that Buck Rogers would use to shoot lunar elk......

In any case, it was only a starting point, and , as you pointed out, the only way to really know where the rifle prints at various ranges is to actually SHOOT it..

So I guess the answer to my ? would be to zero my gun 1.5" low at 25 yards to be pretty close to dead on at 100 huh

Nope you still got it all wrong. You shoot your gun at 100 to see where your hitting at 100.

You guys kill me... I ask a simple ? and everybody beats around the bush and avoids the answerDude I was a 12 time expert in the USMC, Series high shooter at boot camp... I've been shooting rifles for 35 years... I've got a Rem M700 7mm mag that will put 3 shots under a dime at 100 yards... Oh I'm sorry .25 MOA DAs...

I could prob make you look like a dumb !@# at the range...

For your info I just bought a Rem 750 Woodsmaster 30-06and I only have a 80 yards range to shoot on... So to save me some time I thought I might be able to save somerounds at 25 yards

Never mind I'll figure it out on my own...

You guys are like the guys at the gun shop. You know the guy who treats everybody thatcome in,like he is the only one in the world that knows anything about guns... Nine times out of ten there just bullet salesmen

Thanks fore all your help DA

If you did all that much shooting and being you are a expert why would you be asking the question in the first place . just curious

Mr. Longbeard, the theoretical answer to your question is the 1.5" low at 25 yards if the spacing between the center of the scope and the center of the barrel is 2". This is calculated by dividing the 2" by 4 which tells you how much the bullet must rise each 25 yards. At 25 yards the bullet has made up the 1/2" of the 2" and thus would still be low 1.5". Keep in mind that this is purely theoretical and does not account for any drop in the bullet which will occur even at 100 yards.

When zeroing a rifle, I normally start at 25 yards and make initial adjustment to get me 1-1.5" low. This should get you between zero and a couple inches high when you move the target to 100.

I sight all of my rifles 2" high at 100 yards. 90 percent of my shots on deer where I hunt is 150-225 yards. This sighting will have me well in the ball park anywhere in that range. If you are about one incgh to one and one half inches high at 80 yards, you should be in good shape.

Thank you... I really didn't think it was that technical of a ?

I guess some people like to use the forums to try and make them selfs sound like they are the badest people on the gun circuit

Who cares... When it comes to rifles all I care about is putting my rounds down range and hitting what I'm aiming at

Then you should put yourself up a target at 25/100 yards and buy a box of Rem. Core Lokts.