Yes, I have done so in the past to validate data.Dr.Phil wrote: I'd like to try that sometime but I'd put some steel in front of my chrony first. And even then, I don't know if I'd really trust myself.
I have found that it is not necessary in most cases.
Math is you friend and as long as accurate numbers are put out by the manufacture and you accurately capture your muzzle velocity, ballistic tables are spot on.[/quote]
I've shot over a chrony before at 200 yards with a sighted in rifle and yes if the OEM specs are right the ballistic tables will match pretty close.
One of the main bullets I load in .223 is the Prvi Partizan 75gr BTHP-M bullet and PPU "claims" it has a BC of .404 but if you look at the ballistic table for their factory ammo using the same bullet and do the backwards math you end up with a BC of .350.
I noticed that during long range shooting the bullet was dropping more than it should have when using their published BC. Did a little backwards math and now the bullets hits were it should based on a BC of .350.
Same thing hold true for their 62gr FMJ-BT bullet. They "claim" a BC of .361 when in fact it's .280. BIG difference. After plugging the correct number it too land where it should.
Paul