JB1 Posted February 5, 2014 Report Share Posted February 5, 2014 Can anyone help out please, I have some major conflicting reading from 2 chronographs. But drop readings seem to be accurate to one reading that I doubt the most. 22.250 Lapua case federal match primer. 37.5 grains of H380 26" barrel OAL 2.097 (measure from ogive) no pressure signs. H2O case capacity 45.2 I've got a difference of over400 fps, if I include the estimated velocity from reloading books that only makes it worse by chucking in a figure thats in between the 2 I already have. Link to comment Share on other sites More sharing options...
abolter Posted February 5, 2014 Report Share Posted February 5, 2014 3671 fps according to quickload Link to comment Share on other sites More sharing options...
AnthonyR Posted February 5, 2014 Report Share Posted February 5, 2014 I use 55gr SBK out of my 26" barrelled 22-250. 38.5gr of H380 gives me 3727fps over my chrono. Link to comment Share on other sites More sharing options...
abolter Posted February 5, 2014 Report Share Posted February 5, 2014 55 gr BT i think from the title?? Link to comment Share on other sites More sharing options...
JB1 Posted February 5, 2014 Author Report Share Posted February 5, 2014 Thanks very much gents for the replies, quick load isn't far off at all from my calculations with regards to bullet drop out to 300. I have 1 reading at 3591 book velocity, another at 3656 and another at 3857 but measured calculator over distance says 3785. Aaahhh!!! Link to comment Share on other sites More sharing options...
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