The problem with shooting one single bull for 30 shots is that you lose the poa spot as the hole gets larger. This causes the group to be larger than it should because you dont have a precise aiming spot any more. I think the best way to see the true accuracy over the entire string would be to shoot a new bull for each shot. If you would like to test this then print off a 50 bull target and shoot each bull then you can see what the true potential of the rifle is over the full string.
When testing for group size ( so that I can maintain the same aiming spot ), I usually have a point of aim that is a little higher than where the group will be:hHere is a 50 shot group with a modified .25 Marauder rifle. The es was 60 fps, or 7.5 %. Distance was 32 yards:
Quote from: HillGSA on February 14, 2016, 04:56:42 PMWhen testing for group size ( so that I can maintain the same aiming spot ), I usually have a point of aim that is a little higher than where the group will be:hHere is a 50 shot group with a modified .25 Marauder rifle. The es was 60 fps, or 7.5 %. Distance was 32 yards:That does allow for keeping a precise poa but it still hides the overall performance or consistency of the rifle. For example in the pic for the 50 shot group the only info you really get is what size will all 50 shots land in. If you shot 50 different bulls you could break it down even further and see how far each shot hits from the poa. It really depends on what info you care about as both ways do work. But since this thread is called the DEFINITIVE accuracy thread I would think the info should show each individual shot and how far it landed off the poa. It would be interesting to see an unregulated Mrod with 50 bulls then that same Mrod with a reg and another 50 bulls with both groups being shot at the same power level to keep things as consistent as possible with the only change being a regulator.