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JerryM · August 10, 2012, 02:02 PM

The old hunters/writers like Page and O'Connor recommended the "rule of three." Sight in 3" high at 100. That gives a max rise/fall of 4 inches out to 275 -300 yards for rifles like the .270, and 250 yards for the 30-06 with 150 gr bullets. That permits a center chest hold on animals the size of deer and antelope to those ranges. Of course actual firing is needed. That also puts the drop at 400 at 12 inches and 30 inches at 500 yards. I always found that accurate. For the first shots to sight in shoot at 25 yards and it should be centered for the 3" sat 100.

I have always sighted in my rifles for that and have never seen any need to change.

I liked the Weaver Rangefinder reticle which had two cross hairs 6 inches apart at 100 yards. At 500 yards I could hold slightly below center chest. I only did that a couple of times on antelope. Today the variables can be checked to see at what magnification you get 6" at 100. On my Leupold 2.5X8 I believe I found that the 6 inch distance from the center to the heavy part of the reticle was at about 7 power.

Jerry

August 10, 2012, 02:02 PM	#8
JerryM Senior Member Join Date: April 4, 1999 Location: New Mexico Posts: 1,889	The old hunters/writers like Page and O'Connor recommended the "rule of three." Sight in 3" high at 100. That gives a max rise/fall of 4 inches out to 275 -300 yards for rifles like the .270, and 250 yards for the 30-06 with 150 gr bullets. That permits a center chest hold on animals the size of deer and antelope to those ranges. Of course actual firing is needed. That also puts the drop at 400 at 12 inches and 30 inches at 500 yards. I always found that accurate. For the first shots to sight in shoot at 25 yards and it should be centered for the 3" sat 100. I have always sighted in my rifles for that and have never seen any need to change. I liked the Weaver Rangefinder reticle which had two cross hairs 6 inches apart at 100 yards. At 500 yards I could hold slightly below center chest. I only did that a couple of times on antelope. Today the variables can be checked to see at what magnification you get 6" at 100. On my Leupold 2.5X8 I believe I found that the 6 inch distance from the center to the heavy part of the reticle was at about 7 power. Jerry __________________ Ecclesiastes 12:13 ¶Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man. 14 For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil. Last edited by JerryM; August 10, 2012 at 02:09 PM.