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1/25/2018 7:38:29 AM
Posted: 9/16/2002 6:51:55 AM EST
Without adjusting the front sight post, how does moving the front sight tower forward on the barrel affect the point of impact, up or down?
Link Posted: 9/16/2002 7:47:09 AM EST
Neither, IMO, it merely makes a longer sight radius.
Link Posted: 9/16/2002 10:31:48 AM EST
As long as the front or rear sight never moves vertically, it wouldn't change at all, as bob says, just the sight radius.
Link Posted: 9/16/2002 2:21:13 PM EST
Link Posted: 9/17/2002 2:27:37 AM EST
Thanks guys,

Jury still seems to be out, but I am siding with Troy. Wonder where the technical info could be found.
Link Posted: 9/17/2002 2:47:09 AM EST
Troy is correct. On an m4a1 with m855 ball ammunition, the bullet connects with the line of sight at 25 meters, reaches its crest (appx thirty inches above line of sight I think?) at 110 meters. Connects with line of sight again at 270 meters. This is why you can zero your rifle at 25 meters, and be ready to go at 300 meters. For those of you who are soldiers, this is why you sometimes have to aim a little low at the midrange targets.
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