Factory Ammo and powder grains?

plasma

plasma

Member
EE Expired
Rating - 100%
6   0   0
Location
B.C.
Does anybody know why they don't publish the amount of grains per round on a box of factory ammo? What is the standard on a 40 Cal S&W 180Gr factory round or is there? When your reading your loading book and you have your starting grain and a maximum grain where would a factory round sit?

Thanks
 
only company that sometimes posts what powder/weight is hornady because they try and make their loads reloadable to that spec. some like their newer cartiges they use a propriatary powder.
 
It would be nice if one knew how many grains and what powder was in the ammo, especially if your shooting compation like IPSC, that you would know if your 4 grains bullseye, which keeps you in major if your shooting a 230 grain bullet from a 45.
 
Factory loads are loaded to spec on bullets weight and velocity, with whatever their R&D dep't says won't destroy their insurance rates, and that their purchasing dep't can get in boxcar (or similar) quantities.

About your only option is to chrony the loads you like, and work up loads that match the velocity out of the same gun, with the same projectiles, if you can get them.

Cheers
Trev
 
So you think companies change the powder they use in their rounds based on availability and price?
 
I wonder if you phoned a company like say Fiocchi if you asked them how many grains they use in a particular round they manufacture if they would tell you? I think I'll call for the hell of it.
 
Powder sold for reloading is carefully produced so that there is very little change in the powder's characteristics. IMR3031, for example, will predictably behave as IMR3031 for handloading purposes.
For ammunition production, the load is adjusted to produce the desired performance characteristics. The powder in one particular production lot of a given cartridge may or may not be the same as in the next. There is no reason for manufacturers to use the equivalent of a numbered canister type of powder. Makes powder manufacture easier.
 
plasma said:
So you think companies change the powder they use in their rounds based on availability and price?
Click to expand...

It's more like powder changeing from lot to lot. Cannister powders are selected to try to make the pound of powder that you buy this year be as similar as possible to the one you bought 10 years ago. Commercial powders don't do this, the loads are tweaked for pressure and velocity to accomadate the next lot. Combine this with the fact that the particular spec may not have a cannister approximate equivilant in the first place.
 
You must log in or register to reply here.
Back
Top Bottom