How does the Oehler compare in accuracy to that one that you set down next to you? I forget what the name of it is. I think it uses some other way to track the velocity. Maybe it's some sort of doppler effect.
You say that consistent velocity correlates to consistent accuracy. Two important points about this. Correlation does mean causation, you are implying that consistent speed will cause greater accuracy, which is simply false. Consistent velocity contributes to consistent group size. A consistent 4" group is not accurate by any standards, but can easily be obtained by loading to the wrong velocity. A side note to people considering a chrono. They are not needed unless loading to min or max extremes, or if you plan to play with components a lot. Once you find a velocity that shoots a small group, you can load to that velocity with different bullets/primers/powders/etc and save the trouble of working up from scratch
joshua43214 Interesting... I like it. Any other advice on cronography would be well recieved. Would a cronograph be important to those dancing on the edge of sammi specs?In relation to high pressure pistol cartridges?Specifically 357sig..and it's "combinations". I am GENUINELY curious.Was thinking of buying one. Best wishes.
I am fairly new at reloading however it's my understanding that a chrono is almost necessary if you are shooting out past 1k and extremely useful for load development at any range. Reason being is a good group at 100 yards does not translate to a sub MOA group at 1k. Finding the SD and actual velocity with a chrono will tell you much more about your load than your group size will. Human error is the biggest reason we use a chrono because everybody can shoot a lucky group now and then but the numbers never lie.
Consistent velocity generally means you have a consistent bullet weight, consistent powdercharge, consistent pressure, consistent ignition, ect. So yes, consistent velocity goes along with consistent accuracy (provided the loading is within an accuracy node for the rifle). Accuracy is a measurement of consistency, precision is a metric relating to the rifles/shooter's ability to hit the exact, intended point of aim. Loading to a velocity doesn't really work out the way you think it does; not unless you only have one type of powder, bullet, priming, and case available. Different component (even lot-to-lot variations of the same component) all play into the pressure curve and oscillation of the barrel. Is a chronograph needed? No, but they are useful when it comes to figuring out what's going on, and when calculating trajectory. It can also be used if you design bullets (or test them) to determine Ballistic Coefficient.
thank youLatt. where can I use (not buy, too expensive for my budget) a chronic...I use non lethal ammo, and use my airpisto ls for home defense and for my security patol, which I have turned into a business. fps is almost like the word of God with us, and for 2 - ###@
