wtnhunt Posted January 13, 2005 Report Share Posted January 13, 2005 Tried out some different ammo yesterday I was planning to use on coyotes with the .243. The wife had been shooting 100 grain core lokts and I was shooting 1 inch groups with this savage model 10 at 100 yards. Anyways, I shot one of these 80 grain winchester cxp1 varmint rounds and it hit really high. So I shot another high again. These are consistently hitting about 6 inches higher at 100 yards than where I had it sighted with the core lokts. Thinking maybe something happened to the scope, I made some elevation adjustments got it close with the winchester rounds and then shot a corelokt and it hit way low, so I ended up shooting about a half a box of shells and got it back where the core lokts are back on and guess I will just use them this weekend. I figured there would be some difference, but I dont know how they are hitting so much higher. Anyone have a good explanation as to how the poi could change that much? Quote Link to comment Share on other sites More sharing options...
carbonhunter Posted January 13, 2005 Report Share Posted January 13, 2005 Re: poi change with different ammo? [ QUOTE ] That 80 gr bullet is a little lighter!! I bet if you threw the 100 gr'ers in it would shoot right on like before. 6" is a lot but heck as long as you can adjust your scope that much, No big deal! [/ QUOTE ] Agreed as long as the 80's are hitting in the same general area and are grouping nice...just high. Then I'd say you got your self a shooter. Quote Link to comment Share on other sites More sharing options...
wtnhunt Posted January 13, 2005 Author Report Share Posted January 13, 2005 Re: poi change with different ammo? I realized that the lighter bullet would hit a little higher, but not that much. Made me wonder if it is normal to see that big a difference. Quote Link to comment Share on other sites More sharing options...
carbonhunter Posted January 13, 2005 Report Share Posted January 13, 2005 Re: poi change with different ammo? But Its also a complete'ly differant bullet as well, Its gonna prob. have to be completely re-zero'ed JMO william Quote Link to comment Share on other sites More sharing options...
wtnhunt Posted January 13, 2005 Author Report Share Posted January 13, 2005 Re: poi change with different ammo? Think I will just shoot the core lokts this weekend if I even see any coyotes. Quote Link to comment Share on other sites More sharing options...
JimT Posted January 14, 2005 Report Share Posted January 14, 2005 Re: poi change with different ammo? The poi will change for sure. Did you rest the barrel on something then not the next time? That will change the poi also. Quote Link to comment Share on other sites More sharing options...
AJ Posted January 14, 2005 Report Share Posted January 14, 2005 Re: poi change with different ammo? Its not uncommon to have a big change in POI with a 20% reduction in bullet weight. There should be a significant velocity difference also. That's why we stress checking POI on paper before trying out on game when a change is made. Quote Link to comment Share on other sites More sharing options...
wtnhunt Posted January 14, 2005 Author Report Share Posted January 14, 2005 Re: poi change with different ammo? [ QUOTE ] Did you rest the barrel on something then not the next time? [/ QUOTE ] Yeah Jim I shot a good steady rest with all the shots I took. [ QUOTE ] That's why we stress checking POI on paper before trying out on game when a change is made. [/ QUOTE ] Thanks guys, that is why I always check and glad I did. Quote Link to comment Share on other sites More sharing options...
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