Heavier bullet less powder

[ELR LVR]

I think you are missing a very basic understanding of internal ballistics and gunpowder. For any given amount of powder in a case, a lighter bullet will accelerate faster than a heavier bullet. The ligher bullet therefor travels further at a lower pressure and the total volume of the chamber/barrel is increasing faster than with the heavy bullet hence the lighter bullet results in lower pressure than the heavier bullet. This is why heavier bullets will usually require lower loads than lighter loads. As others have noted bullet shape and seating depth also have a significant impact on pressure because bore diameter relative to the case volume is large.

Hope this helps.

What he said ^^^^^
a heavy bullet having more mass, is harder to get out of the way
so builds more pressure
so needs less powder to build the same pressure as the lighter bullet

 

[9mmAnimal]

Dump or pull apart. They’ll hurt your gun at the least. They’ll hurt you and your gun at worst. This can get dangerous really fast. You have to be careful when reloading. Follow the book loads!

Already dumped to much work taking apart

 

[9mmAnimal]

Some punctuation would make this much easier to comprehend. Get a mentor before you get hurt. Common sense says, as bullet weight goes up, powder charge goes down. Really don't want to see you in the "kaboom" section of the daily bulletin.
Paul

Thanks did alot more reading after I posted, I do like weight goes up powder goes down I ask alot of questions still learning, haven't made any mistakes and not going to

 

[9mmAnimal]

What he said ^^^^^
a heavy bullet having more mass, is harder to get out of the way
so builds more pressure
so needs less powder to build the same pressure as the lighter bullet

Thanks did alot of reading after I posted, no mistakes yet,I'll keep it that way

 

[9mmAnimal]

Thanks did alot of reading after I posted, no mistakes yet,I'll keep it that way

I also like the way you explained it thanks