I picked up some targets and my indoor pistol range recently to use for 100 yard sight in for the 45-90. The black bull measures 5 1/2". Is that about the needed size for this range when using a globe front sight with "lollipop" inserts? I have some 200 yard target that measure 12"(bulls eye) but wasn't sure about the 100 yard targets. I don't know what the NRA number would be but for the 200 yard targets it's MR-52.