1.5mm flash holes

[CamTheBam]

Is there any credible evidence that 1.5mm flash holes, like those found in Lapua's SRP 6.5mm CM cases, provide greater accuracy?

They're certainly a pain to manage. So easy to forget and run them through a 'standard' small-size decapping die.

 

[gme]

way more than most people want to know about the effects of flash hole diameter and orientation on accuracy, some of it quite contrary to accepted orthodoxy

https://scholarsmine.mst.edu/cgi/viewcontent.cgi?article=8415&context=masters_theses

 

[CamTheBam]

way more than most people want to know about the effects of flash hole diameter and orientation on accuracy, some of it quite contrary to accepted orthodoxy

https://scholarsmine.mst.edu/cgi/viewcontent.cgi?article=8415&context=masters_theses

BINGO!!! Thank you!