Nephrology
05-17-11, 18:27
This is more of an expository thread as I do not have any questions about a specific cartridge.
I noticed when looking at the winchester self defense ammunition ballistics chart that some bullets performed very differently at different velocities. For example, the T-series bullets seemed to diminish in penetration as they were sent at increasing velocities - while this is undoubtedly partially a function of weight (the lower velocity ranger T series are 147gr while the hotter stuff is 127gr) I was wondering how velocity affects bullet performance across different calibers, bullet designs and ballistic media.
I also noticed that the same Ranger T loading for .357 SIG - 125gr @1350FPS - exhibited underpenetration, if anything, on the bare gelatin (10.9") compared to a nearly identical 9mm +P+ T loading (12.3" , 127gr @ 1250FPS)
For those who have done extensive gel testing, what sort of relationship do you typically see for the velocities and the expansion/performance of different bullets? I ask because principally because there seems to be an interesting nonlinear correlation between performance and velocity, which flies in the face of the "foot-lb" junkies.
I noticed when looking at the winchester self defense ammunition ballistics chart that some bullets performed very differently at different velocities. For example, the T-series bullets seemed to diminish in penetration as they were sent at increasing velocities - while this is undoubtedly partially a function of weight (the lower velocity ranger T series are 147gr while the hotter stuff is 127gr) I was wondering how velocity affects bullet performance across different calibers, bullet designs and ballistic media.
I also noticed that the same Ranger T loading for .357 SIG - 125gr @1350FPS - exhibited underpenetration, if anything, on the bare gelatin (10.9") compared to a nearly identical 9mm +P+ T loading (12.3" , 127gr @ 1250FPS)
For those who have done extensive gel testing, what sort of relationship do you typically see for the velocities and the expansion/performance of different bullets? I ask because principally because there seems to be an interesting nonlinear correlation between performance and velocity, which flies in the face of the "foot-lb" junkies.