Alpha Mule Posted April 1, 2010 Report Share Posted April 1, 2010 I spend most of my hunting time in the dark and find that judging distances is very difficult. I find that I consistantly over estimate and consequently shoot over the target's heads. I was having a fiddle with the rather fancy and (it turns out) awesome Hawke Chairgun Pro software. I put my rifle in at 10.5 ft lbs (estimate), set the zero distance to 30 meters and selected RWS Superdomes (the current favorite) and produced the following graph: You can see that for the majority of the middle distance (probably where my prey finds itself), I'm shooting high. So thinking thinks, I thought "I wonder if,,,," I dropped my Zero distance (after much faffing) to 23.6 meters and hey presto: The pick sections are a 1 inch 'kill zone'. If I need to go a bit further out, it only needs me to lift about 1/2 an inch and the zone will shift just enough to ensure I keep it clean. I figured this out just as the weather turned pants and I ran out of CO2. Well I have CO2 again, now all I need is some reasonable weather and for the full moon to find a cloud to hide behind. Quote Link to comment Share on other sites More sharing options...
tango Posted April 1, 2010 Report Share Posted April 1, 2010 seems like a sensible thing youve done there mate any idea how i can get my hands on this magical software? Quote Link to comment Share on other sites More sharing options...
kyska Posted April 1, 2010 Report Share Posted April 1, 2010 (edited) seems like a sensible thing youve done there mate any idea how i can get my hands on this magical software? I've posted this on here a few times, I've been using it sice it first came out. chairgun If you right click on your POI image you can see the retained energy, absolute energy too, plus lots of other high brow ballistic gubbings. Edited April 1, 2010 by kyska Quote Link to comment Share on other sites More sharing options...
supadonk Posted April 1, 2010 Report Share Posted April 1, 2010 what gun and cal are you using alpha? Quote Link to comment Share on other sites More sharing options...
John_R Posted April 1, 2010 Report Share Posted April 1, 2010 Zero for PBR is a great technique. You do have to have all the info to hand, so measuring scope height and knowing the pelet weight and power of gun are essential. My .22 Vermy/ AA Fields comes out at 27 yard zero and the Daystate .177/H&N FTT zeros at 36.5 yards. Quote Link to comment Share on other sites More sharing options...
Jega Posted April 1, 2010 Report Share Posted April 1, 2010 (edited) Just a little add on to this excellent thread lads ,heres a couple of links to pellet data ,weights,bc's etc which you will find useful when using the chair gun programme.Hope this helps . http://www.photosbykev.com/wordpress/2009/...ellet-database/ http://www.airgunforum.net/articles/pelletweight.htm Edited April 2, 2010 by Jega Quote Link to comment Share on other sites More sharing options...
brian28 Posted April 1, 2010 Report Share Posted April 1, 2010 Great program an its free been using it for 6 months or so . Was a .22 fan but not after comparing on this program Quote Link to comment Share on other sites More sharing options...
Alpha Mule Posted April 2, 2010 Author Report Share Posted April 2, 2010 what gun and cal are you using alpha? It a Umarex 850 Airmagnum in .22 Quote Link to comment Share on other sites More sharing options...
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