25 yard vs 50 yard accuracy test idea

First topic message reminder :

I don't know if anyone has tried this and I have not had the time to do this.  I have seen comments that this gun or that ammo are great at 25 yards but not so good at 50 yards.  My thought is that testing at 50 yards is probably a lot harder than some of us realize.  I know for me just shooting at 50 yards is a lot tougher    I thought it might be interesting to set up a target at 25 yards and then set up a target directly behind it at 50 yards and see what the difference in group sizes would be.  I have always wondered about the comments that say "my gun or ammo is an X ring load at 25 yards but is terrible at 50 yards"  Anyway if anybody has tried this I would love to hear how it turned out.  

Thanks

Barrels make a difference with the super-slow 148s.  My Colts (1:14 twist) will make oval holes with full WCs at 50 yards, whereas my old Smith's with the slower twist (either 16 or 18) will tumble. The Colt will be a little off-call, but the Smith is a crapshoot.  

Might be why there were so many barrel swaps and mixed brand muttguns in PPC.

Link to the whole article mentioned above by fc60:

http://www.nennstiel-ruprecht.de/bullfly/index.htm#Contents

Subheading "Dynamically Stable = NO":

http://www.nennstiel-ruprecht.de/bullfly/anom.htm#header_anomalies

You need higher velocity for slower twist barrels.

I’m cautious at suggesting data for HBWC to avoid separations.

Data are out there