Re: OP Question
I've clocked previous lots of 77 gr TMK from around 2020 at about 2700 FPS from a 16" barrel, consistent across rounds from 2 lots, in 2 different rifles, through 2 different chronographs. This has roughly matched ElPollo's data from 2024 as well as Molon's from 2023.
Recently however 2 separate people have found velocities noticeably higher than expected, at 2741 FPS from a 16" barrel and 2507 FPS out of an 11.5", in both cases using Garmin C1s. This more closely matches measurements from my ballistic gel testing in 2019 where a 16" barrel pushed them at ~2740 FPS and a 24" barrel was reading about 2940.
Does anyone have their own independent data to share? I'd try it myself but I don't currently have access to a (functional) chronograph these days.
I've clocked previous lots of 77 gr TMK from around 2020 at about 2700 FPS from a 16" barrel, consistent across rounds from 2 lots, in 2 different rifles, through 2 different chronographs. This has roughly matched ElPollo's data from 2024 as well as Molon's from 2023.
Recently however 2 separate people have found velocities noticeably higher than expected, at 2741 FPS from a 16" barrel and 2507 FPS out of an 11.5", in both cases using Garmin C1s. This more closely matches measurements from my ballistic gel testing in 2019 where a 16" barrel pushed them at ~2740 FPS and a 24" barrel was reading about 2940.
Does anyone have their own independent data to share? I'd try it myself but I don't currently have access to a (functional) chronograph these days.
