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Drop between 50 and 100 meters...

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Drop between 50 and 100 meters...

Old 11-09-2007, 04:05 PM
  #1  
Typical Buck
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Default Drop between 50 and 100 meters...

Muzzloader season opens for me tomorrow. I'm using a CVA Optima; powerbelt 295 grain copper clad aerotip bullets, 100 grains of pyrodex pellets (2).

I've sighted my gun in at 50 meters (55 yards) since it is most likely that I won't have to shoot that much further than this, if any. It appears that when I shoot at 100 meters (110 yards), my bullet is dropping 3.5 inches. Is that normal? Looking at powerbelts ballistics chart, they show the trajectory to be about 2/3rds of an inch higher at 100 yards than 50 yards. Is this information reliable? Granted I only shot 5 bullets, but the results were pretty consistent.

Thanks,
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Old 11-09-2007, 04:23 PM
  #2  
Typical Buck
 
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Default RE: Drop between 50 and 100 meters...

I shoot the buffalo SSB 375 grain HP BT bullet and at the 50 yard target I am3 " high and still climbing at the 100 yd target which is still about 2" over center
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Old 11-09-2007, 05:08 PM
  #3  
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Default RE: Drop between 50 and 100 meters...

I'm shooting a CVA Wolf with Barnes Expander MZ's 300 gr and two Pyrodex pellets. I experience pretty much the same.
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Old 11-09-2007, 05:18 PM
  #4  
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Default RE: Drop between 50 and 100 meters...

If you're dead on at 50 meters, I could understand it being that much lower at 100 meters. Since you tested it on the range, it sounds like you're all set. Good luck.
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Old 11-09-2007, 06:53 PM
  #5  
Typical Buck
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Default RE: Drop between 50 and 100 meters...

Thanks guys. I still won't be sleeping tonight, but at least it will be due to anticipation for the hunt rather than concern as to whether my gun is going to work.

Good luck to all.
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Old 11-10-2007, 05:27 AM
  #6  
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Default RE: Drop between 50 and 100 meters...

ORIGINAL: mustad

Muzzloader season opens for me tomorrow. I'm using a CVA Optima; powerbelt 295 grain copper clad aerotip bullets, 100 grains of pyrodex pellets (2).

I've sighted my gun in at 50 meters (55 yards) since it is most likely that I won't have to shoot that much further than this, if any. It appears that when I shoot at 100 meters (110 yards), my bullet is dropping 3.5 inches. Is that normal? Looking at powerbelts ballistics chart, they show the trajectory to be about 2/3rds of an inch higher at 100 yards than 50 yards. Is this information reliable? Granted I only shot 5 bullets, but the results were pretty consistent.

Thanks,
Please see this chart for your PB:

http://www.powerbeltbullets.com/docs/PBB26inchballistics.pdf

For the PB 295 copper clad using 100g of powder, the trajectory charts show you must be 3.48" high to be dead on at 150. You can drop your ballistics into here and get your drop:

http://www.sav10ml.com/pages/load_data/traj_basic_dat.html

I put in 295g bullet
.168 for BC
1620 for MV
50 yard zero and I get the following:

Range Velocity Energy Drop
0 1620 1719 -1.5
50 1432 1343 0
100 1271 1059-2.8
150 1144 857 -10.9
200 1052 725 -25.7

Give it a try. You are about 3" low at 100 yards with a 50 yard zero. If you drop the following parameters into theballistics calculator:

295g bullet
.168 for BC
1620 for MV
150 yard zero

you get nearly the chart displayed here:
http://www.powerbeltbullets.com/docs/PBB26inchballistics.pdf

for example the chart shows a bullet "drop" of +3.48 inches at 50 yardsin the above chart, but the program gives +3.6 inches high at 50 yards, pretty close, so I am confident of the results I said above. Hope that helps. Chap

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