Quote:

---

There will be a rainbow trajectory to 300yds from your Whelen IMO.

---

That will depend on the Ballistic coefficient (for this example I have used .450) I note the their protected poin BC is .400 so I have assumed 0.450 for these puppies. I may well be a long way out will look forward to an aproximation from Woodlieigh. Al other variables are well within the parameters.

Source Hornady ballistics calculator - www.hornady.com


Input Variables Firearm type Rifle Sight Height 1.5
Bullet Weight (grains) 225 Ballistic Coefficient .450
Muzzle Velocity (fps) 2620 Temperature 59
Barometric Pressure (hg) 29.53 Relative Humidity 78%
Zero Range (yards) 220 Wind Speed (mph) 0



Ballistics Table in Yards 35 Whelen - Hydrostatic 225 gr., .450 B.C.

Range (yards) Muzzle 50 100 200 300 400 500
Velocity (fps) 2620 2522 2426 2241 2064 1895 1736
Energy (ft.-lb.) 3429 3178 2941 2509 2128 1795 1505
Trajectory (220 yd. zero) -1.5 1.3 2.8 1.1 -7.5 -24.2 -50.7
Come Up in MOA -1.5 -2.5 -2.6 -0.5 2.4 5.8 9.7

(I sorry that the numbers will not post properly, even if a spread them out manually)


So to set your rifle up for this trajectory would require a 2.8 inch high over zero at 100 yeards (91 meters. This would virtuall mean that the highpoint of the trajectory was 3 inches.
A 7.5 inch holdover is more than acceptable at 300 yards IMO on something like a red deer or more so on a sambar stag. That would mean placing the parallel crossair on the wither. The question I have is if these projectiles will work with a terminal velocity of 2064 fps?


Any feedback welcome as I am only new at this with large game, however I have been doing this sort of stuff with varmints for years along with my Sako 222, V-max projectiles and the odd red fox. Then someone evented the .204 Ruger!~


Cheers



McLeish

--------------------------------------------------------------------------------

--------------------
Fallow might be small, but they're tasty

Post Extras