![]() ![]() This introduces variance that you can't really control. Use this awesome tool and I used this ballistic coefficient table.ĬCI Mini-Mag High Velocity with a ballistic coefficient of 0.145 RANGE (YARDS)īetween 25 & 50' the bullet crosses the sound barrier and will wobble. (While this isn't exactly correct it's a 'good enough' answer for us) From that point on there is no more gas expanding behind it and it's slowing down all the way to the target. The bullet reaches is maximum speed at the end of the barrel. I think the only high velocity ammo I've seen has been either cheap plinking ammo or marked specifically as high velocity. I use SK Lapua Rifle Match which is just over 1000fps. I think a Contender with a 10in barrel and 2x or 4x scope would be a good platform for testing pistol.All of my match ammo is subsonic. I was a surgeon with a scalpel and now I have a butter knife. With a pistol, I was looking at 2/3/4 inch groups at 25 yds. understand that a good group with the rifle was 10 shots touching in a ragged hole (and maybe a flyer), well below 1/2 inch group. I just could not 'chuck up' my Buckmark on the bench in a repeatable way without some expensive fixturing, which was well outside of my budget at the time. The purpose of the rigid concrete stand and sand bags was to prevent my shooting skills (or lack of) from influencing the final results. I was attempting to hold all these constant and only vary the ammo, so changes in the final results are directly caused by changes in the ammo. the act of shooting is a system, a combination of human skill, equipment, ammo quality, and environment (temp humidity, WIND, etc). I experimented a little with my Buckmark at 25 yards. TLDR- buy something in the 1050 fps range for accuracy / repeatability the 1200+ fps rounds will delivery more energy downrange, but with SOME degradation of accuracy/repeatability. as I mentioned, this was over a decade ago. I feared there were too many variables out of my control at that distance and invalidated my findings. I attempted to repeat some of these tests at 100 yards, but it was difficult to hit a 1 inch circle with iron sights at that distance. it's entirely possible that the hi velocity stuff performs well in an autoloading platform, I just didn't test for that. Nothing that came in a bulk packaging (ie milk carton) did very well. Rem Yellowjackets were the worst overall. Aguila makes some really cool and fun stuff, but I would not consider anything they make to be overly accurate or repeatable. Stan Dev was the worst and they tended to group vertically. Anything I tried that was marked as 'Subsonic', regardless of price, did not score particularly well. Speed of sound is ~1133 fps, and there is some disagreement on the exact number. ![]() ![]() check on the velocities of the 'match' grade ammo, they are all generally in the 1030-1070 fps range, which is technically subsonic. I did some research on the subject and it seems that supersonic projectiles, when exiting the barrel and breaking the sound barrier, are subjected to some difficult to measure physics that act on trajectory. Maybe they are better for hunting, but they did not group as well. the 'high velocity' stuff (Velocitor, Mini Mag etc) did not score well, nor was it very consistent (relative to my test group) on the chrono. CCI Green Tag, Eley Tenex, scored just as high or slightly better, but it was in the $20-$30 range. I really, really liked the Wolf ammo (it was not their 'match' ammo, but their #2 offering). Testing was done from a concrete bench with bags, outdoors. I also recorded velocity on a chrono for each round. Tests were conducted at 50 yards and the paper was scored for group size. 22 LR ( as it was readily available and fairly inexpensive at the time) and use a scientific method to 1) find the best round for my particular rifle, and 2) determine if a $20 box of Eley was really 4x better than a $5 box of plinking ammo. The goal was to purchase as many different types of. I bought a used Schultz & Larsen club gun from Military Gun Supply in FtW (now living at the bottom of the Gulf, unfortunately). About 12 years ago, I wanted to get out and shoot more but didn't have a lot of cash. ![]()
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