This is confusing me any input would be great.

[mattp8893]

On my 6.5 creedmoor I started out on this barrel running 140 eld-ms they did well but with them being so hard to find I ended up switching over to the 140 rdf. I've had the eld out to 1200 and the bc on the box seemed spot on. I took the rdf to a mile the other day and the bc was spot on. Now this is just the called for elevation in applied ballistics but why would the eld (with a lower bc than the rdf) be a full mil less called elevation at 1 mile. I didn't shoot the eld to verify but I have had it to 1200 and it was spot on. Running same charge weight everything is the same besides bullet. Magnetospeed shows the eld is 18 fps faster than the rdf but I wouldn't think that would make any difference at 1 mile


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[supercorndogs]

I think 18fps would be about .5 mil at that range with those bullets.

 

[mattp8893]

That's surprising I wouldn't have guessed that small a difference would make that big a difference. Especially going sub sonic at 1500ish.


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