Reloading help
- Thread starter Sumack
- Start date
b/c brass stretches upon firing- the 010 is so you don't have to trim every time you fire- if you were to trim to case length only, you'd be over after firing and have to trim back every firing- your brass will "grow " in length and eventually reach the case length- then, after so many firings, you trim it back again or if it gets too thin around the head, ANNEAL it back to where it came from- brass always flows from head to neck-
ultimate_monkey
CGN Ultra frequent flyer
- Location
- victoria BC
im suprised no one mentioned it yet but..
as well as the points above depening how deep the chamber is cut, if your brass gets longer then the MAX case length, when fire it will stretch out and into the throat doing so will cause the mouth of the case to pinch and this can cause increased pressure in the case as the expanding gasses cant escape as fast.
as well as the points above depening how deep the chamber is cut, if your brass gets longer then the MAX case length, when fire it will stretch out and into the throat doing so will cause the mouth of the case to pinch and this can cause increased pressure in the case as the expanding gasses cant escape as fast.
"...why that is..." Hi. Generally speaking, the shortest case length is 10 thou under the max case length. Case dimension drawings are normally the max case length. Like t-star says, the 10 thou is a tolerance. You won't have to trim every time. Remember to chamfer and deburr the case mouths after trimming though.
Annealing has nothing whatever to do with case lengths.
"...never had any luck with annealing..." Pan of water up to just below the shoulder, heat the necks and shoulders with a regular propane torch until the brass changes colour(not red hot) and tip.
Annealing has nothing whatever to do with case lengths.
"...never had any luck with annealing..." Pan of water up to just below the shoulder, heat the necks and shoulders with a regular propane torch until the brass changes colour(not red hot) and tip.
Wow. So NOT the answer I would have expected from a member of CGN with a post count in excess of 6000 posts.
It IS a big deal, T-Star. You are providing a newbie with inaccurate information. Not only dangerous but a tad irresponsible as well. We bring questions to the more experienced members of CGN for answers. We should be handing out hard, factual data when a newb asks for advice or clarification of a particular process not erroneous superficial data. If you don't KNOW it, don't post it.
Had the OP taken your advice, annealed (softened) the already thin area ahead of the case head of a several times trimmed case, it could have had detrimental effects. It could have (more than likely would have) caused a premature case separation; leaving a newb (at the very least) in the unenviable position of having a case stuck in the chamber, while out at the range, with no way or experience to remove it. Then he winds up digging at it with a screwdriver, wrecking the chamber of his rifle.
I could have caused a lack of obturation within the chamber and escaping gases could have damaged the shooter, etc.
The reason there is such heavy legalities on this sport is because there are tons of people out there with no common sense of their own. They do what they are told, right or wrong, and then go even further to compound an already bad situation into a disaster.
PLEASE, in the future, only post what you know to be true. Just the facts. Never reinforce an actual bad practice.
Thanks for listening.
RW
