Comments by "Shawn R" (@shawnr771) on "Wartime Evolution of the No4 Lee Enfield Rear Sight" video.

  1. He is here in the comment section.
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  2. It has to do with Arc of trajectory. I can give you an example for M16A1 rifles because it was drilled into my head. At the time we zeroed M16A1 using 55gr M193 bullets. The zero range was 25 meters using a paper target imprinted with a small e type silhoutte. As the bullet travels leaves the barrel it is travelling up in the arc of trajectory in relation to the line of sight. At 25 meters the AoT intersects the LoS. The bullet then continues upwards to an apex and begins going down. The AoT will again intersect the LoS at a certain point. For an M16A1 zeroed at 25 meters this range us 275 meters. The e type silhoutte printed on the zero target is an optical illusion of how big the 275 meter target will appear to a shooter. At ranges closer than 275m but farther than 25m bullets will hit high. The apex or highest point is about 125m. Ranges beyond 275m the bullets will hit lower. The drop from 275m to 300m is 15 in or 38cm So instead of aiming center mass of the sternum you would aim at the head to compensate for the drop. For the Enfield the 400 meter range is the second point along the LoS that is intersected by the AoT.
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  3.  @AirborneMOC031  Ok
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