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Recent content by dcaven

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    "Come up" sheets

    Re: "Come up" sheets I will be going to the 100 yard zero. Trigger pull is three lbs. cant, not sure. I am going to take your advice though and re-zero to 100 yards and dial up as needed. I like being right a lot more than being wrong. David
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    "Come up" sheets

    Re: "Come up" sheets My groups are all pretty tight at 500 and 600 yards. My biggest problem is dealing with the wind. The place I shoot 500 yards is flat and has nothing anywhere around to block the wind. I set the windage for what I guess is the windspeed during the lulls between gusts...
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    "Come up" sheets

    Re: "Come up" sheets I appreciate all your input. I am not trying to be difficult or disrespectful. I am trying to learn. Please tell my why a 500 yard zero is not a good idea. I started with a 100 yard zero and incrementally worked my way up. It is my understanding that the various...
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    "Come up" sheets

    Re: "Come up" sheets The target often does fall between the values. You can either dial in from your zero or you can estimate between the closest hash marks. It is better to dial in, of course, but if time is a factor or if you have multiple targets, that may not be an option. This...
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    "Come up" sheets

    Re: "Come up" sheets Ok, this is what he was doing. For the mil hashes, he started with one MOA and multiplied it by 3.438. Then he looked up the corresponding MOA from the Ballistics readout (hence the five yard increments) and matched the corresponding distance. That is the first hash...
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    "Come up" sheets

    Re: "Come up" sheets That is very close but not the same as what I got. I could be a difference in altitude, temp, humidity, pressure. Altitude= 0, temp= 85, humidity= 78%, pressure 29.42 deg caliber .270, 140 grn, BC .496 500 zero 1 440 2 373 3 305 4 225 5 130 down 1 530 2 612 3 660 4...
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    "Come up" sheets

    Re: "Come up" sheets "Maybe he wants to have the rifle zeroed at (x) and know based on that what each of the half and whole MIL marks of the TMR correspond to yardage-wise" This is what I am doing. I just got in from being out of town last night. I looked on my desk this morning and haven't...
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    "Come up" sheets

    Re: "Come up" sheets Chiller, You are not understanding. I am not using each 5 foot increment. I am using only some of them but the program has the MOA attached to each. Using a formula given to me by Leupold, I can then figure out what range each hash mark on the reticle represents...
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    "Come up" sheets

    Re: "Come up" sheets Thank you. That is what I was looking for. David
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    "Come up" sheets

    Re: "Come up" sheets The five foot increments give me the MOA measurements I use for filling out a card that is a picture of my Leupold TMR reticle. It isn't for shooting the difference, it is for assigning the correct range to the mil and half mil marks on the card. It is how the guy at...
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    "Come up" sheets

    I am using a notebook from Impact Databooks to help me practice shooting. It is a great book and is largely custom but came with a few standard pages. One is a page titled "come ups." I am not sure how to fill it in as I think it must be dependent on what my zero is. Does anyone know...
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    Range Report Need a good wind drift formula

    Re: Need a good wind drift formula By the way, I am shooting a .270 with 140 gr Nosler Accubonds that have a BC of .496.
  13. D

    Range Report Need a good wind drift formula

    I am new and apologize if this is posted somewhere else. I didn't see it so I will ask. I have found several formulas for wind drift but all seem to lack one thing or another. I would like a formula that takes into consideration ballistic coefficient and bullet weight. Also, I am not afraid...
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