Thought the 1000-yard backer discussion was geared toward using an ETarget to count shots and showing where multiple shots/single holes were located?
I just put together my ShotMarker recently for load development work. Used the
video series from
@F Class John to help me get started. Friend asked the other day, "how accurate is it?". I decided to shoot a few groups, measure and compare.
I put three (3) different 3-shot powder charges thru the ShotMarker (600 yards). I measured the 'groups' using a
Neil Jones measuring tool - the same tool used at BR matches (to measure groups).
View attachment 1325024 View attachment 1325026
Here's what I measured with the Neil Jones tool (hard to get HxW since there's no bullet hole to center on) (groups measured several times and averaged):
View attachment 1325051
Here's ShotMarker:
View attachment 1325064
View attachment 1325065
Notes:
- ShotMarker shows shot #4 slightly to the right of #9. Target has #4 slightly to the left of #9.
- There seems to be more overlap of shots #5&6 on ShotMarker than target?
- I have some experience with it - but I am no expert using the NJ tool. Tutorial here.
These are my own initial observations with my ShotMarker system - remember I just got it up and running so I'm still new at this. For my personal load development use, this is more than sufficient. YMMV
Other AS references:
Does IBS allow scoring by any of the electronic target systems? Thanks in advance!
forum.accurateshooter.com
Having seen several discussions, and participated in many of them regarding eTargets, I noticed that none of us seem to be on the same page on what to measure in regards to their accuracy. The NRA rules require: • 10.17.1 Electronic Target Requirements- Any electronic target system that meets...
forum.accurateshooter.com
Buy a roll of opaque cooking paper or grease proof clear. Make a square to cover the aiming mark divide in to quarters with a pen line. Place a new aiming mark on the ET at a medium to long range. Fire three rounds into each quadrant of the aiming mark with just two of the total number as close...
forum.accurateshooter.com