I fully agree with this. There is a reason long range sharp shooters use simple bolt action guns, while the vast majority of an army uses much more complex guns. A simple bolt action also happens to be the most precise gun we can make (a single shot musket would be simpler, but it wouldn't be more accurate and loading it would be a pain). You choose the best tool for the job. Properly cared for modern guns don't jam very often, and improperly cared for guns jam too often no matter how simple they are.