Originally Posted by
jepho
Thank you for your response: I will feed back my results as soon as I have something to report.
I am not as knowledgeable as I would wish to be. Is your 100T a new gun or just new to you? The distance of 20 yards requires some ballistic knowledge to analyse correctly. My intuition is that if 20 yards is accurate, there is no reason why 40 yards could not be accurate. I am sure someone will be along soon to tell me why that is foolish assumption but it may open a helpful debate on what is not working for your gun.