- Joined
- Jan 26, 2015
- Messages
- 1,534
Buddy of mine was into rendezvous big time. That's what he shot and it was remarkably accurate. Plenty good for Midwestern deer hunting.With a patched round ball, that is the ideal twist.
Buddy of mine was into rendezvous big time. That's what he shot and it was remarkably accurate. Plenty good for Midwestern deer hunting.With a patched round ball, that is the ideal twist.
When will the android version be available?If you use my app
Eagleballistics it does this for you you can play with velocities and twist until you find what you like it even gives you rpm's
Www.eagleballistics.com
View attachment 563858
Try and keep RPMs to around 300k-320k max if using cup & core bullets.
(Velocity x 720) ÷ twist rate.
Thin-skinned copper jackets can start to let loose above that 320-330k RPM rate.
Monos do fine on fast twist.
Heavier bullets need faster twist to stabilize properly.
I have a bunch of 6.5mms w. 1:7.5" twists. The 130s do just fine in them.
Fastest RPM round I shoot is a 22GT w. 1:7". 77TMKs @ 3200 are at 329k RPM. They are wicked accurate still, and absolutely crush coyotes with the terminal velocity on impact.
If a 1:10" .308 won't shoot a 140gr well @ 3000fps, I highly doubt the twist rate is to blame. That is only going to be in the 216k RPM range. Pretty slow spin rate actually.