.338 rum question

Discussion in 'Long Range Hunting & Shooting' started by casilva43, Sep 23, 2008.

1. casilva43Well-Known Member

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I chronographed my .338 rum. IT is shooting 2850fps using a 250 grain soft point bullet. If I zero my rifle at 100 yards. How do I calculate drops at 200 - 500 yards. I have a Mark IV scope which as milldot reticle along with target turrets. How do I calculate how many clicks I will have to adjust my turret if say I try to take a 300 yard shot?

2. casilva43Well-Known Member

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I read some drop charts online that say this bullet should be 9 inches low at 300 so using my first mildot with is approx 3 inches at 100 would put me close to dead on at 300(using 3(") x 3 (1ooyards)). I'd rather not have to aim using the mil dots but make corrections using the target turrets. Each click is 1/4" adjustments at 100 yards.

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May 19, 2008
Hi There,

9" @ 300 yrds will be 3 MOA or 12 clicks from a 100 yrd Zero.

4. casilva43Well-Known Member

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what about 22 inch drop at 400 yards and 45 inch drop at 500 yards? How many clicks would I need then?

5. Michael EicheleWell-Known Member

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(Inches of drop)/(Click value*yards/100)

22 divided by 1.00 = 22 clicks.

45 divided by 1.25 = 36 clicks.

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7. Ultramag45Well-Known Member

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Is this very accurate.. i asked this same question about a 338 RUM at higher altitude.. if so thankyou

8. MontanaRiflemanWell-Known Member

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I haven't tested the data in the field yet but plan to this fall. Maybe someone else has?