So I got to test my Caldwell chrono the other night - using the IR lights - was indoors.
Everything worked fine - almost too easy - using my iphone to record data.
I ran some WWB first to get a baseline - this usually produces about 134-135 PF out of my g34
I also ran some of the last batch I did on my 550, and a couple of batches from new 650,
the 2nd load having very slightly higher charge (because I was too lazy to fiddle with powder measure ;-)
All 8 rounds though g34
WWB 115gr ?? ?? avg 1233.4 SD: 24.5
550 124gr 4.8gr WSF avg 1088.4 SD: 24.7
650 124gr 4.8gr WSF avg 1102.2 SD: 17.9
650 124gr 4.85gr WSF avg 1105.4 SD: 15.6
all wonderful, except that avg speed for WWB is high by probably 50fps compared to what
I've seen at matches, but there the temp is probaly 70-80 degrees compared to 60 the other night.
Interestingly the only time the above load has been chrono'd at a macth ISTR the avg speed being as above about 1088 and made PF 134 or 135.
Question is, can I usefully relate my results above to what I can expect at a match (same area).