nksmfamjp
Well-Known Member
- Joined
- Jan 5, 2004
- Messages
- 3,381
So, I'm trying to figure out cartridge, bullet, barrel lengths and twist rates in some logical fashion. Kind of makes you dizzy!
First I tend to focus on the animal. I figure to have the best chance there, I need best possible accuracy, expansion, and an exit.
Thinking about accuracy, I'm mostly focused on minimizing recoil which tends to push the cartridge to a minimum bullet weight and case capacity. That works. I'll admit, I shoot a 6.5 Creedmoor better than a 300 WM.
Then expansion. There are definitely cases where expansion is not required. Heart shots in just the right spot, brain, spinal shots. That said, especially at long range, I want an expanded bullet to the vitals. So, I want a bullet running over 1800 fps at max range. My legit max range now is 400. I am working to be good at 600. This has come down quite a bit in the last couple years because I'm more conservative about what shots I will take. As you can imagine, bc, personal effective range, barrel length, case capacity all play a role.
Then, I believe based on hunting experience that I need an exit. I struggle to know by the numbers if a bullet will exit. My thoughts are…., a bullet enters with kinetic energy. This energy does work on the bullet and on the animal. If it lacks enough energy, that will allow the bullet to stop. So, what is a minimum or a target? I go back to a near 0 work example. A 44 mag cast solid, imo will kill a mule deer buck at 120 yards with minimal left over. It will exit. That is about 600 ftlbs. So, I set that as my energy minimum to exit deer. I use 1000 for elk, but I really don't know about that.
So, does this make logical sense? Am I missing something big? Yes, I'm definitely overthinking it!
First I tend to focus on the animal. I figure to have the best chance there, I need best possible accuracy, expansion, and an exit.
Thinking about accuracy, I'm mostly focused on minimizing recoil which tends to push the cartridge to a minimum bullet weight and case capacity. That works. I'll admit, I shoot a 6.5 Creedmoor better than a 300 WM.
Then expansion. There are definitely cases where expansion is not required. Heart shots in just the right spot, brain, spinal shots. That said, especially at long range, I want an expanded bullet to the vitals. So, I want a bullet running over 1800 fps at max range. My legit max range now is 400. I am working to be good at 600. This has come down quite a bit in the last couple years because I'm more conservative about what shots I will take. As you can imagine, bc, personal effective range, barrel length, case capacity all play a role.
Then, I believe based on hunting experience that I need an exit. I struggle to know by the numbers if a bullet will exit. My thoughts are…., a bullet enters with kinetic energy. This energy does work on the bullet and on the animal. If it lacks enough energy, that will allow the bullet to stop. So, what is a minimum or a target? I go back to a near 0 work example. A 44 mag cast solid, imo will kill a mule deer buck at 120 yards with minimal left over. It will exit. That is about 600 ftlbs. So, I set that as my energy minimum to exit deer. I use 1000 for elk, but I really don't know about that.
So, does this make logical sense? Am I missing something big? Yes, I'm definitely overthinking it!
