- Sep 1, 2009
Assumption is the mother of all F-Ups if you know what I mean. Don’t ever assume. That’s why I shoot out in the field and validate. The BC on any bullet is just an assumption from the manufacture IMO. It’s a good starting point though. Some bullets shoot good using the G7 factor and some dont. I have a couple of Votex Razors Gen 2 that say .25 MOA at 100 yards. If you read the book on that scope vortex tells you that that scope is really adjudging your scope @ .26 MOAs at 100 yards. I used the .25 MOAs click method at a target at 2300 yards and missed. When I used their .26 MOAs of adjustments I hit. My Valdada scopes are spot on. When you use a chronograph to get your velocity it’s just an assumption the chronology is giving you. I say that because I used to use them with my friends that swore by them. So in my opinion if they are so accurate than why is it if you use say three different chronographs you get three different velocity’s. I don’t have anything against people who use chronographs. I just don’t use them. That’s why I have all ways said paper don’t lie. When that bullet hits that target paper or steel there is no way anyone can say you missed. The proof is on the target you hit. The equipment you use in the field is a system. They all work together. I have a G7 Range finder that I use for my 260 Rem. That system is extremely accurate. when I’m at 1140 ish feet above sea level and shoot a 1000 yard target that system uses 23.75 MOAs of adjustment To hit the target. Now when I use my Vectronix Terrapin and my Kestrel it takes 24.5 MOAs of adjustment to hit that same target. You Can spend all the money in the world and buy the best of everything and be out shot by someone who spent half the money on his/her equipment because they took the time and to creat a shooting system. I don’t know anyone who takes a chronograph out in the field hunting with them. I don’t know everyone on this planet though. If you are a Bench rest shooter none of this will make sense because you are used to sitting down at a bench all ways shooting True North at the same range at the same known distance. Your chronograph will tell you your FPS is 3100 FPS and you will say that is that. You will use the bullets manufacture B.C. Because it’s on the box. You will keep adjusting your scope until you hit that target At say 1000 yards and say it only take my bullets 25 moa of adjustment to hit that target because I know my bullets are traveling 3100 FPS and I know my B.C. Is let’s say .700 The BC on the box and the FPS from your chronographs where assumptions from the manufacture. When you use your whole shooting system in the field and that bullet hits that target you are assuming nothing. It is all facts because the proof is on the target.Stgraves,
Doesn't your approach assume that the published BC for your bullet is 100% accurate as well as the click adjustments are 100% exactly 1/4 MOA correct? What I am getting at is why are you more comfortable deriving velocity which will be applied to vaious differences?
It would seem no matter the situation used you have to vaildate your click adjustements at multiple distances.