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Discussion Starter · #1 ·
Here are the trajectories with different zeros using Federal reduced recoil slugs out of an 18" barrel with ghost ring sights.

Yards Trajectory

0 -1.0
25 +.9
50 +1.3
75 0.0
100 -3.2
125 -8.6
150 -16.2

0 -1.0
25 +.3
50 0.0
75 -2.0
100 -5.9
125 -11.8
150 -20.1
 

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Discussion Starter · #3 ·
If you have access to a ballistic program then you can use the following:

Federal slugs weigh 438 grains and their ballistic coefficient is .109.
 

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ragin_canagin said:
How much does a grain weigh?
A "grain" IS a unit of weight. Your question is like asking "How much does a pound weigh?"

The weight of bullets, powder, and slugs are typically expressed in grains. One ounce is equal to 437.5 grains.
 

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Ulysses said:
ragin_canagin said:
How much does a grain weigh?
A "grain" IS a unit of weight. Your question is like asking "How much does a pound weigh?"

The weight of bullets, powder, and slugs are typically expressed in grains. One ounce is equal to 437.5 grains.
To be fair, the only true units are Planks.

Even worse, weight and mass are traditionally different. Pounds are a unit of force: mass under the acceleration of earth's gravity. This is often called weight.

A grain was initially defined as the weight of a grain seed from the middle of an ear of barley. So that is how much a grain weighs. It has since been fixed at 0.06479891 gram of mass.

Units are fun.
 
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