What would be my drop
Moderator: Excalibur Marketing Dude
-
Heavvyduty
- Posts: 49
- Joined: Sun Jan 10, 2016 11:10 am
What would be my drop
If I'm shooting a 410gr bolt @ 375fps an it,s sighted at dead on at 20yds.What do you think my drop would be @ 30 40 50yds
Re: What would be my drop
Excalibur provides a arrow drop chart using a 400 grain arrow linked on the left side of the page but lists 350 fps as the highest speed listed.
The way I see it your drop is roughly 3" , 9" and 20" at 30, 40, and 50 yards using your 410 gr. @ 375 fps.
The way I see it your drop is roughly 3" , 9" and 20" at 30, 40, and 50 yards using your 410 gr. @ 375 fps.
EXCALFFLICTION 1991 ->>----------> 2024
Matrix 355
Huskemaw and Leupold crossbow optics.
Boo Strings
SWAT BH's and TOTA heads.
Teach Your Family How To Hunt So You Don't Have To Hunt For Your Family
Matrix 355
Huskemaw and Leupold crossbow optics.
Boo Strings
SWAT BH's and TOTA heads.
Teach Your Family How To Hunt So You Don't Have To Hunt For Your Family
Re: What would be my drop
One of my ballistics calculators kinda/sorta does crossbows "not bad".
Running your numbers I get (zero'd @ 20 yards with your 375 fps at the rail - including the "terminal velocity"):
25 yards -1.16" @ 353 fps
30 yards -3.02" @ 348.8 fps
35 yards -5.60" @ 344.6 fps
40 yards -8.90" @ 340.4 fps
45 yards -12.96" @ 336.3 fps
50 yards -17.78" @ 332.3 fps
and if you like tossing "lob balls"
60 yards -29.81" @ 324.3 fps
70 yards -45.15" @ 316.6 fps
80 yards -63.99" @ 309.0 fps and with a 5 mph crosswind, hitting at 90 degrees to your shot you would get 5.86" of "vertical movement" @ 80 yards. Moving up to 10 mph cross wind would push the arrow 11.73" to the left or right of the point of aim (again assuming wind intersecting at 90 degrees to the arrow path).
Up to 50 yards that same 10 mph cross wind the vertical movement/drift would be "no greater than 4.45", so if your aim was true to the exact center of the vitals on a deer, even without holding over for the wind you "should" still be in the vital zone, albeit on the extreme edges.
Running your numbers I get (zero'd @ 20 yards with your 375 fps at the rail - including the "terminal velocity"):
25 yards -1.16" @ 353 fps
30 yards -3.02" @ 348.8 fps
35 yards -5.60" @ 344.6 fps
40 yards -8.90" @ 340.4 fps
45 yards -12.96" @ 336.3 fps
50 yards -17.78" @ 332.3 fps
and if you like tossing "lob balls"
60 yards -29.81" @ 324.3 fps
70 yards -45.15" @ 316.6 fps
80 yards -63.99" @ 309.0 fps and with a 5 mph crosswind, hitting at 90 degrees to your shot you would get 5.86" of "vertical movement" @ 80 yards. Moving up to 10 mph cross wind would push the arrow 11.73" to the left or right of the point of aim (again assuming wind intersecting at 90 degrees to the arrow path).
Up to 50 yards that same 10 mph cross wind the vertical movement/drift would be "no greater than 4.45", so if your aim was true to the exact center of the vitals on a deer, even without holding over for the wind you "should" still be in the vital zone, albeit on the extreme edges.
Graham
Micro 340TD, 17" Gold Tip Ballistics (180 gr inserts) - 125 gr Iron Will/VPA/TOTA (504 grains total/21.6% FOC) @ 301 FPS
Micro 340TD, 17" Gold Tip Ballistics (180 gr inserts) - 125 gr Iron Will/VPA/TOTA (504 grains total/21.6% FOC) @ 301 FPS
Re: What would be my drop
I tried sighting in at 20 yards dead and did not like it so went to 30 yards on my micro 335 ...It is 3 inchs high at 20 ,dead at 30 ,3 inchs low at 35 and 7 inchs low at 40 ...
Do not know if this is helpful at all just what my bow did and real close to chart on excal..For hunting buck this is perfect for me ...
Do not know if this is helpful at all just what my bow did and real close to chart on excal..For hunting buck this is perfect for me ...