Shot group statistics

Suppose you have two batches of pellets and you want to decide which one is the best for your competition shooting. This article covers three issues.
- From several known measures for shot group tightness measures, which one is the most often correct when you are trying to identify the best batch (no matter how small the difference).
- What is the best way to spend a given number if shots: all in 1 group, or several sub-groups?

- Using a statistical test to find out if the differences between two batches are statistically significant.

 


Adding some pressure to air rifle training


Cant angle

 

Inleiding Introduction
Hier is te lezen waarom, waarheen en hoe ver het trefpunt verschuift ten gevolge van kantelen van het geweer. Dat wordt beredeneerd aan de hand van een eenvoudige theorie, ondersteund met berekeningen van PCB. Here you can read where, why, and how far the point of impact moves due to canting the rifle. This is discussed using a simple theory, supported with calculations from PCB.
Hier is te lezen hoe in de praktijk is nagegaan dat de theorie en de computerberekeningen uit het vorige verhaal kloppen voor wat betreft het kantelen (in het Engels). Here you can read about a test that was conducted to verify this theory and PCB's calculations with respect to the cant angle effect.
Hier is te lezen hoe in de praktijk is nagegaan dat de theorie en de computerberekeningen kloppen voor wat betreft de vizierlijn-hoogte (in het Engels, met Nederlandse samenvatting). Here you can read about a test that was conducted to verify this theory and PCB's calculations with respect to the line of sight height (riser blocks)
   
   

PCB

PCB (PC Ballistics): software (freeware) for external ballistics calculations


Last update: April 2006. Re-load to Sport-Shooters-OTS.com: April 2019
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