At a more sedate pace today.
I meant what I said about leaving the bore alone.
You will need a “Dope Book” which can mean many things to different folks. For a National Match guy its got 22 squares and circles on it and a picture of the target. For a “precision” guy it looks a lot more like a sniper log. None of the pre-printed ones have the ballistic data for YOUR rifle. You will have to develop that on your own and figure out how to incorporate it into your Dope Book. I Use the 5X7 Rite in the Rain zip binders and paper and make my own. Get you a “Space Pen”, grab a couple golf/lottery pencils as back up and for sharing.
Once you have a dope book practice with it when you dry fire. There is nothing worse than getting back to the hotel and reviewing when you realize that you got tired and progressively forgot more and more things and now you have no idea why that shot went where it did because all you have it a + where you saw the shot break and an X where it hit.
You mentioned you have an MRAD scope. Are the knobs in 1/10 Mil adjustments or 1/4 MOA? If the knobs are different from the reticle you will have to learn MATH and a lot of it. Sometimes you will use both at the same time for holds and movers.
Ballistics: There’s an app for that. Most of them work VERY well when you know TWO things. Actual field and chrono data for your rifle and ammo and a calibrated scope. Since you haven’t bought your ammo yet that is out but you said you reload and like Hornady so you should have a Hornady reloading manual which has ballistic data in it which will get you close.
Calibrated scope: Most folks never do this because its hard and get frustrated when things don’t make sense.
The first thing you want to do is ensure your reticle is what they say it is. MOST important if your scope is Second Focal Plane (SFP) because there is only on point on the power dial where your reticle does what it says it does. If you have a SFP scope you will want to know precisely where that is an make a PERMANENT mark on your scope that you can find. On a First Focal Plane (FFP) scope its is just as important to make sure the reticle is correct and does not change subtension as you dial through the power ring.
The second part is the most time consuming but does not cost you any ammo to do. It will also cause you to think about how to accomplish it.
But first the basics.
1 MIL (Milradian) = 1 Meter(M) @ 1000 M = 10 Centimeters (cm) at 100 M.
1 MIL = 36" @ 1000 yards = 3.6" @ 100 yards.
1Minute of Angle (MOA) = 10.47" @ 1000 yards = 1.047" @ 100yards
1 Inch Per 100 Yards (IPHY) = 10.0" @ 1000 yards and 1" @ 100 yards
So if you have a MIL / MIL (MIL Reticle / MIL Knobs) scope you only need one poster board, If you have a MIL/MOA, MIL/IPHY or MIL/OTHER) scope you need two poster boards.
Get a new sharpie, a sharp pencil and a long straight edge and draw a “+” in the exact middle of the poster board (you find the middle by drawing a line from corner to corner, where they cross is the middle).
Then grab your pencil and as accurately as you can draw your measurements (MIL’s, MOA or IPHY) on the cross. Then through the center of the pencil line where it intersects the “+” and add about 1/2" line.
Now you need an EXACT 100 yard range. Lasers are not good enough, and because the range says so doesn’t work either. Go to Home Depot, Lowes etc and buy a 100 yard tape measure (keep your receipt, you’ll bring it back tomorrow or not) go to the range/back yard/farm wherever and measure from the poster board to where the knobs on your scope are.
This is the hard part. Put your scope in a vice (Preferably in the rings that are mounted to your rifle and onto a spare rail in the vice). Alternately strap your rifle SECURELY to the bench. Then line up the crosshairs with your poster boards. Then it is just a matter of dialing the scope up and down and side to side to verify that the scope is doing what it is supposed to be doing. (If it doesn’t PM me as that is a whole discussion by itself involving math and a friend with a pencil.) More importantly note that it returns to the same spot when you are done.
I could go on about this topic for days. Ask me questions I will give you my thoughts and if I don’t know I know somebody that does.
Cheers,
Craig