JimGnitecki
Member
- Joined
- Mar 28, 2010
- Messages
- 1,258
There are actually 4 impacts outside the larger cluster, in that group, 2 at 9:00 and 2 at 7:30.
When I finally got one, more than a quarter century after Chuck Ransom (guy that invented it) had passed, then used it then took it apart and measured it, I wasn’t as impressed as some are with the machine. That said, I don’t own one he made and don’t know if tolerance/materials changed after his passing.
It’s certainly a quick way to test loads “A,B,C&D” with the same firearm but I also don’t feel it’s the end all be all of testing methods.
Instead of scrapping the entire concept he used, I just altered a few of them on the machine rest I built, linked to at the bottom of #46.
This is another 10 shot 25 yard group from the same pistol, ammunition and mounting point as the ransom shown in #46 but using my machine rest.
View attachment 990608
That's a LOT better group, but still shows a moderate horizontal stringing bias. I wonder what is causing that to persist.
Jim G