.223 velocity x barrel length

[jlh26oo]

It was a while ago, but someone around here has a graph of velocity varying over barrel length. Longshot, but if anyone knows what I'm talking about I'd appreciate a repost or link etc.

Thanks.

 

[jlh26oo]

Hopefully someone saved this graph.

 

[jlh26oo]

bump

I remember looking at that chart, I saw what seemed to me a point of limiting returns on barrel length but don't remember what it was.