barnbwt
member
- Joined
- Aug 14, 2011
- Messages
- 7,340
Is there a way to do this for various calibers/bullets?
I am trying to nail down how much force the barrel experiences for a rifle design, and the closest thing I can find for the frictional component is a study (whose methodology seems somewhat questionable) of 223 that found values around the 150lb range. However, my design is in 7.62x25, so I expect things to be slightly different due to both the bullet diameter (surface area) as well as the contact-area length of the stubby bullets.
Right now, it looks like I have enough design headroom for 200lbs or so of barrel friction (in addition to barrel thrust), which is probably at least the right order of magnitude. But is that a realistic, or at least conservative figure for a small pistol caliber?
TCB
I am trying to nail down how much force the barrel experiences for a rifle design, and the closest thing I can find for the frictional component is a study (whose methodology seems somewhat questionable) of 223 that found values around the 150lb range. However, my design is in 7.62x25, so I expect things to be slightly different due to both the bullet diameter (surface area) as well as the contact-area length of the stubby bullets.
Right now, it looks like I have enough design headroom for 200lbs or so of barrel friction (in addition to barrel thrust), which is probably at least the right order of magnitude. But is that a realistic, or at least conservative figure for a small pistol caliber?
TCB