ChrisF Posted October 27, 2015 Report Share Posted October 27, 2015 Go to Hornady . com , for their News , found when using doppler radar , that the BC was changing big time at a certain LR distance , basically found out that after a point the plastic tip had heated up and melted , they make no mention of their Amax line ? This was found while doing testing on a hunting version of the Amax type bullets . In the new bullets they use a heat proof plastic . Link to comment Share on other sites More sharing options...
gbal Posted October 27, 2015 Report Share Posted October 27, 2015 "My bullets melted" - may just be a very good excuse.... To expand on Chris's post: In developing new high BC bullets,using Doppler radar CdvMach graphs,Hornady found that for high BC (roughly above .55) there was noticeable drop off in that BC,attributable to increasing drag from deforming (melting) polycarbonate tips (for all makes of tip).Varmint bullets to 400 yards are affected only slightly but as range extends, high retained velocity heat deformation gets considerable: eg 6.5 140 Amax with starter BC .585 is down to .545 at 800y. Of course,Hornady would not be saying all this if they didn't have a solution-their Heat Shield Tips-which improve the BC in the above 6.5 140 to .610 at 800. These bullets are secant,Extremely Low Drag: ELD X for hunting, ELD M for target. "My bullet melted".....well,there is a solution,if you have this problem (though you probably don't know...). :-) gbal Link to comment Share on other sites More sharing options...
ejg223 Posted October 27, 2015 Report Share Posted October 27, 2015 never thought of that, PC has quite a high melting point as it is. I could injection mould ceramic tips that would only melt above 2000 C. edi Link to comment Share on other sites More sharing options...
Hatzi Posted October 28, 2015 Report Share Posted October 28, 2015 If only they could develop a way to make 17HMR reliable and consistent, a problem that people actually have, rather than one that never seemed to be bothering anyone. Link to comment Share on other sites More sharing options...
meles meles Posted October 28, 2015 Report Share Posted October 28, 2015 If only they could develop a way to make 17HMR reliable and consistent, a problem that people actually have, rather than one that never seemed to be bothering anyone. It's called .22WMR isn't it ? Link to comment Share on other sites More sharing options...
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