Reply to Thread

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Message: <blockquote data-quote="CoyoteStalker" data-source="post: 2687065" data-attributes="member: 35854">The term factory advantage comes form the Lee loading manual, and I think it has to do with the pressure values.  The factory crimp also allows the bullet to be set at different seating depths that do not necessarily match the candeler of the bullet.  The crimp also allows you to have ammo that is not so sensitive to being banged around in your hunting ride.  Dropping a box of non-crimped ammo could make several rounds unusable until they could be fixed.  I have always crimped so I don't know what differences in groups I would see by not crimping.  Groups are a hard way to measure consistency due to the multitude of variables at play during shooting.  However, I have had people comment on my velocity spreads on the chronograph.  One day at the range, I was working up a load for my long range rifle.  My 5 shot groups were showing my normal very small deviations on the chronograph, and the guy with a chono next to me said he didn't believe my spreads.  I ran 5 through his uprights and his chrono recorded similar spreads to mine.  Do I contribute great groups and small deviations of velocity to crimping?  No, absolutely not.  I spend an incredible amount of time preparing every case to be the same for my precision loads.  I double measure my charges on the balance and electronic scales.  I also make for sure that my finished loads measure exactly the same and match my saved load data.  The precision loads I just referenced were loaded on my single stage.  My Load Master is used mostly for plinking ammo.</blockquote>

Verification