My first question has to do with vertical dispersion. Every ladder test I've done (@300yds.)has given me some results I don't know understand. Within the string, lets say from 42gr-45gr +/-.3 will have some bullets actually drop in elevation within the ten shots. 1-3- slowly climb, 4- is down around 2, 5-7- show a node but printing higher than 1-4, 8- is back down around 3, and 9 and 10 printing back up above 5-7. I hope this is clear as mud. What I'm saying is not all the bullets print vertical always gaining in elevation, some actually drop back down the ladder even though velocity is consistently climbing. Is this normal?

Next question is during ladder test or OCW does anyone find a particular node relevant to velocity. My .260 using 3 different powders (RL-17, IMR4350, H4350) and two different 140 gr. bullets (Amax, Barnes Burner). On the 300 yd ladder there is a definite node at around 2875fps, doesn't matter which powder or bullet. I went back through some older ladder test and it is consistent. Has anyone else experienced this? Or is it coincidence?