I have a friend in Africa who is planning to build a .270 cal rifle and will use the 130 gr Barnes X bullet exclusively. He has asked that the following question be posted :
What is the absolute slowest twist that will stabilize the 130 gr Barnes X bullet, OAL 1.185",at a velocity of 2500 fps, at a max range of 250 yds? His purpose in wanting that velocity stems from the fact that the Barnes X bullet petals expand more at the lower velocities. That surprises me somewhat, but he has dissected hundreds of animals over the past several years through both safari and culling experience. I realize this is a difficult question and maybe no one has a good answer, even with a good computer program. Thanks, Jerry
What is the absolute slowest twist that will stabilize the 130 gr Barnes X bullet, OAL 1.185",at a velocity of 2500 fps, at a max range of 250 yds? His purpose in wanting that velocity stems from the fact that the Barnes X bullet petals expand more at the lower velocities. That surprises me somewhat, but he has dissected hundreds of animals over the past several years through both safari and culling experience. I realize this is a difficult question and maybe no one has a good answer, even with a good computer program. Thanks, Jerry