HuntingNut
HuntingNut
   Login or Register
HomeCommunity ForumsPhoto AlbumsRegister
     
 

User Info

Welcome Anonymous


Membership:
Latest: RichardZ
New Today: 0
New Yesterday: 1
Overall: 13126

People Online:
Members: 0
Visitors: 303
BOT: 1
Total: 304
Who Is Where:
 Visitors:
01: Forums
02: Forums
03: Forums
04: Forums
05: Forums
06: Photo Albums
07: Forums
08: Forums
09: Forums
10: Forums
11: Forums
12: Forums
13: Your Account
14: Forums
15: Forums
16: Forums
17: Home
18: Forums
19: Photo Albums
20: Photo Albums
21: Your Account
22: Forums
23: Photo Albums
24: Forums
25: Forums
26: Forums
27: Forums
28: Forums
29: Forums
30: Your Account
31: Forums
32: Your Account
33: Photo Albums
34: Forums
35: Forums
36: Forums
37: Your Account
38: Photo Albums
39: Forums
40: Your Account
41: Forums
42: Your Account
43: Your Account
44: Photo Albums
45: Forums
46: Forums
47: Forums
48: Forums
49: Forums
50: Forums
51: Home
52: Forums
53: Forums
54: Forums
55: Home
56: Forums
57: Forums
58: Home
59: Forums
60: Forums
61: Home
62: Forums
63: Forums
64: Photo Albums
65: Photo Albums
66: Your Account
67: Forums
68: Forums
69: Home
70: Statistics
71: Forums
72: Forums
73: Forums
74: Forums
75: Forums
76: Forums
77: Forums
78: Your Account
79: Forums
80: Forums
81: Forums
82: Forums
83: Forums
84: Forums
85: Home
86: Forums
87: Forums
88: Forums
89: Forums
90: Forums
91: Forums
92: Your Account
93: Forums
94: Forums
95: Forums
96: Forums
97: Forums
98: Forums
99: Your Account
100: Forums
101: Home
102: Forums
103: Forums
104: Photo Albums
105: Forums
106: Forums
107: Home
108: Forums
109: Home
110: Home
111: Photo Albums
112: Forums
113: Forums
114: Forums
115: Forums
116: Your Account
117: Forums
118: Home
119: Forums
120: Forums
121: Forums
122: Photo Albums
123: Your Account
124: Forums
125: Photo Albums
126: Home
127: Forums
128: News
129: Forums
130: Your Account
131: Your Account
132: Forums
133: Forums
134: Forums
135: Forums
136: Forums
137: Home
138: Home
139: Home
140: Forums
141: Forums
142: Forums
143: Forums
144: Forums
145: Forums
146: Forums
147: Forums
148: Forums
149: Forums
150: Forums
151: Home
152: Forums
153: Your Account
154: Forums
155: Forums
156: Forums
157: Home
158: Forums
159: Forums
160: Forums
161: Forums
162: Forums
163: Forums
164: Your Account
165: Forums
166: Forums
167: Forums
168: Your Account
169: Home
170: Your Account
171: Photo Albums
172: Forums
173: Forums
174: Forums
175: Photo Albums
176: Forums
177: Forums
178: Your Account
179: Forums
180: Forums
181: Forums
182: Home
183: Home
184: Home
185: Forums
186: Forums
187: Forums
188: Forums
189: Home
190: Forums
191: Forums
192: Your Account
193: Forums
194: Forums
195: Photo Albums
196: Photo Albums
197: Forums
198: Home
199: Your Account
200: Your Account
201: Forums
202: Photo Albums
203: Your Account
204: Photo Albums
205: Forums
206: Forums
207: Home
208: Forums
209: Home
210: Photo Albums
211: Photo Albums
212: Forums
213: Home
214: Forums
215: Forums
216: Forums
217: Forums
218: Forums
219: Forums
220: Photo Albums
221: Your Account
222: Home
223: Forums
224: Forums
225: Forums
226: Forums
227: Forums
228: Forums
229: Forums
230: Forums
231: Forums
232: Forums
233: Forums
234: Home
235: Forums
236: Home
237: Forums
238: Forums
239: Forums
240: Forums
241: Forums
242: Forums
243: Home
244: Photo Albums
245: Forums
246: Forums
247: Home
248: Forums
249: Forums
250: Statistics
251: Your Account
252: Home
253: Photo Albums
254: Forums
255: Photo Albums
256: Photo Albums
257: Forums
258: Photo Albums
259: Forums
260: Forums
261: Forums
262: Forums
263: Your Account
264: Forums
265: Home
266: Photo Albums
267: Forums
268: Forums
269: Home
270: Home
271: Photo Albums
272: Forums
273: Photo Albums
274: Forums
275: Forums
276: Forums
277: Forums
278: Forums
279: Forums
280: Forums
281: Photo Albums
282: Forums
283: Forums
284: Forums
285: Your Account
286: Photo Albums
287: Home
288: Forums
289: Forums
290: Forums
291: Forums
292: Your Account
293: Your Account
294: Photo Albums
295: Photo Albums
296: Forums
297: Home
298: Forums
299: Forums
300: Forums
301: Forums
302: Forums
303: Forums
  BOT:
01: Photo Albums

Staff Online:

No staff members are online!
 

Coppermine Stats
Photo Albums
 Albums: 308
 Pictures: 2451
  · Views: 820723
  · Votes: 1316
  · Comments: 86
 

Reverse ballistics
Post your bug reports or feature requests here!

View previous topic :: View next topic  
Author Message
Fireman_DJ
Member
Member


Joined: Aug 11, 2011
Posts: 104
Location: Victoria, Australia

PostPosted: Sat Dec 31, 2011 4:02 am    Post subject: Reverse ballistics Reply with quote

I have a strange one for you.

Reverse ballistics, where by I enter specific data like distance and bullet drop for a few ranges and PointBlank will work out the velocity and/or bullet BC.

That data can then be used to compute the NORMAL ballistics.

This removes the need for a person to own a chronograph AND have to shoot at it from 100yd away or trust the manufacuters BC data (if they even supply it).

I thought of this as I'm making changes to my ammo loads soon.
I ran PB with the data I have, but it put me about 6 minutes above the target at 1000yd.
Not saying PB failed, just the data I was able to obtain and input wasn't accurate enough.
Back to top
View user's profile
DallanC
Site Admin
Site Admin


Joined: Jan 18, 2005
Posts: 3571
Location: Utah

PostPosted: Sat Dec 31, 2011 11:37 am    Post subject: Re: Reverse ballistics Reply with quote

The BC Calculator basically works like this. Knowing muzzle and 100 yard velocities, it adjusts the BC until it finds something that matches the velocity drop off.

Something similar could be done knowing drop, but you would need at least two points of height at known distances to compute the final trajectory... and it would only be as accurate as the two initial data points.


-DallanC
Back to top
View user's profile Photo Gallery
Fireman_DJ
Member
Member


Joined: Aug 11, 2011
Posts: 104
Location: Victoria, Australia

PostPosted: Sat Dec 31, 2011 3:22 pm    Post subject: Re: Reverse ballistics Reply with quote

I'm aware of that.
But it's easy to "count the clicks" from what you've shot at a specific range.

I'd say we'd want three points of data.

The rifle/scope data (ie, scope mounting height etc).
The first distance and MOA change from zero.
The second distance and MOA change from zero.

You wouldn't really need to know full bullet drop from the muzzle, just the change between two known distances.

And as I said, no chronograph required, just a season at the range shooting two known distances.
Back to top
View user's profile
Display posts from previous:   
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Bug Reports / Feature Requests
Page 1 of 1
All times are GMT - 7 Hours



Jump to:  


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Valid CSS! Valid HTML 4.01!
Click to check if this page is realy HTML 4.01 compliant for speed :)

All logos and trademarks in this site are property of HuntingNut.com.
The comments are property of their posters, all the rest © 2011 by HuntingNut.com
Interactive software released under GNU GPL, Code Credits, Privacy Policy

.: Upgraded to DragonFly 9.2 by *Dizfunkshunal* :.