badseed
Well-Known Member
Im looking to build a 6.5prc ( yes I know there are plenty of other options but this caliber fills a niche in my safe). I do plan to reload for it and I want to be able to maximize the bullet options. To do this, it seems like I need to build off a medium action to take into account the longer bullets like the 156s. From what I can tell, the longest COAL that I have seen somebody use was 3.1". A medium action will get me 3.2". A short action will only let me build to 2.980" (depending on magazine). My question is what would I be gaining or losing by choosing a medium action vs a short? Will that extra case capacity let me achieve higher velocity before hitting pressure issues? How much extra velocity would be gained or lost?