Tempus Tom
Member
Hello friends,
I’m new to reloading and need some advice from some more experienced minds.
I’ve been loading 44 magnum 300 grain lead projectiles using IMR 4227 and noticed something strange with the available published data.
Everywhere I look the max charge for a 300 grain lead bullet using 4227 is about 19 grains of powder.
However, using the same sources (Lee, Hodgdon, Lyman), the max charge for heavier lead 44 magnum bullets is more than 19 grains.
For example, the max charge for a 330 grain bullet is 20.7 grains of IMR 4227. And the max charge for a gigantic 355 grain lead 44 magnum bullet is…..19 grains. The same amount of powder that I’m supposed to use for a 300 grain bullet.
Also, the published pressure created by using 19 grains of 4227 behind a 300 grain lead bullet is substantially lower than other powders.
Why is this? Why is it safe to use 20.7 grains of 4227 on a 330 grain bullet, but it’s not safe to use more than 19 grains of the same powder on a 300 grain bullet?
To be clear……..I’m NOT going to load more than what the published data recommends, but I want to understand what’s going on. Is this an error in the data? Or is there some other risk posed by using more than 19 grains of 4227 on a 300 grain bullet?
Or would the 300 grain lead bullet not perform well traveling faster than the speed 19 grains of 4227 sends it? And that's why the books say to stop at 19 grains?
And lastly, does someone know of a published 44 mag load using 300 grain lead bullets and IMR 4227 that is more than 19 grains?
Any accurate input would be appreciated.
Thanks for reading.
I’m new to reloading and need some advice from some more experienced minds.
I’ve been loading 44 magnum 300 grain lead projectiles using IMR 4227 and noticed something strange with the available published data.
Everywhere I look the max charge for a 300 grain lead bullet using 4227 is about 19 grains of powder.
However, using the same sources (Lee, Hodgdon, Lyman), the max charge for heavier lead 44 magnum bullets is more than 19 grains.
For example, the max charge for a 330 grain bullet is 20.7 grains of IMR 4227. And the max charge for a gigantic 355 grain lead 44 magnum bullet is…..19 grains. The same amount of powder that I’m supposed to use for a 300 grain bullet.
Also, the published pressure created by using 19 grains of 4227 behind a 300 grain lead bullet is substantially lower than other powders.
Why is this? Why is it safe to use 20.7 grains of 4227 on a 330 grain bullet, but it’s not safe to use more than 19 grains of the same powder on a 300 grain bullet?
To be clear……..I’m NOT going to load more than what the published data recommends, but I want to understand what’s going on. Is this an error in the data? Or is there some other risk posed by using more than 19 grains of 4227 on a 300 grain bullet?
Or would the 300 grain lead bullet not perform well traveling faster than the speed 19 grains of 4227 sends it? And that's why the books say to stop at 19 grains?
And lastly, does someone know of a published 44 mag load using 300 grain lead bullets and IMR 4227 that is more than 19 grains?
Any accurate input would be appreciated.
Thanks for reading.