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9/16/2019 10:09:13 PM
Posted: 1/7/2012 2:25:13 PM EDT
[Last Edit: 1/7/2012 2:26:07 PM EDT by ChrisNCT]
Can someone help me with a possible muzzle velocity with the data that I have?

Here's the items in question:

.223 Remington Brass Case trimmed to proper length
.224 Hornady 68 grain HPBT (Ballistic Coefficient of 0.355)
6.0grains of Trailboss
CCI Small Rifle Primer
16" Barrel with a 1:9 Twist Rate
50 Degrees
40 % Humidity

And if you do have a way to punch in numbers... is it possible to give me drop data at 50,100,150 and 200 yards?
Link Posted: 1/7/2012 3:40:44 PM EDT
[Last Edit: 1/7/2012 3:49:52 PM EDT by Morning_Wood]
Something like 1400fps

range, velo, impact, drop, tof, energy, drift

0 1400 -0.5 0 0 296 0
10 1382 0.42 0.14 0.02 288 0
20 1367 1.16 0.45 0.05 282 0
30 1351 1.72 0.95 0.07 276 0
40 1336 2.08 1.64 0.09 270 0
50 1321 2.25 2.53 0.11 263 0
60 1307 2.22 3.62 0.14 258 0
70 1293 1.98 4.91 0.16 252 0
80 1279 1.53 6.42 0.18 247 0
90 1265 0.88 8.13 0.21 242 0
100 1252 0 10.06 0.23 237 0


150yd drop is -23.15
200yd drop is -42.39
Link Posted: 1/7/2012 3:56:13 PM EDT
[Last Edit: 1/7/2012 3:56:42 PM EDT by ChrisNCT]
Hmmmmmmm.... what about a 5.0 Grain load of Trailboss?

Many thanks for that data... nice to see what I was shooting.
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