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-   -   Climbing trajectory (https://www.huntingnet.com/forum/black-powder/176355-climbing-trajectory.html)

MO Archer 01-21-2007 08:46 AM

RE: Climbing trajectory
 

ORIGINAL: lemoyne

MO Archer, If you are using a scope the bullet normally starts out at -1.5 inches crosses the line of sight at about 30yds deping on velocity and distance sighted in for"0"
This makes perfect sense. I should have thought about the differences for using a scope. Thanks.

txhunter58 01-21-2007 09:21 AM

RE: Climbing trajectory
 
Fact: the bullet begins dropping the instant it leaves the barrel.

Fact: The only way to get a bullet shooting "flatter" is to increase the velocity. The faster it moves, the further it gets "out there" before it drops more.

The difference you are talking about is determined by how high above the bore your line of sight is. In other words, an open sight is much closer to the line of the barrel than a high mounted scope. The lower the profile of the scope, the less of a "minus" figure your get at the muzzle and the less it has to "climb" (be pointed upwards) to initially reach your line of sight.

Said another way, the only way a bullet "climbs" is to be pointed upwards above your line of sight. This is trure even on the fastest magnum certerfire rifleout there.

Pglasgow 01-21-2007 10:18 AM

RE: Climbing trajectory
 

ORIGINAL: TXFRNTLDER
The reason I ponder this is because I am dead on at 50 yards then high at 100. Maybey I am back to dead on on out at 150 175?
TXFRNTLDER,

I'm not not doubting the POI prints, but it tells me that something is terribly wrong. There is NO WAY you can be "dead on" at 50 and "higher at 100" unless something is wrong. We know this, the laws of physics will not be violated. So something is wrong. Maybe your scope?

Underclocked 01-21-2007 10:20 AM

RE: Climbing trajectory
 


scope or irons - same principles apply.

txhunter58 01-21-2007 05:20 PM

RE: Climbing trajectory
 
Great schematic UC! A picture is worth......


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