I've noticed there is no repository for ballistic science documents the way there is for the Mechanized or the infantry forums (for example) so I decided to fix this.
My first offering is dtic stuff from the past on some weird and novel ways to extend the L/D ratios of spin stabilized projectiles. I originally learned about this from someone I was having a discussion with years back and hunting lead me to one of those discussions about bringing back the battleships on navweaps discussion boards where one of the posters (Zenmastur) laid out his master plan for Battleship resurrection. Which included the aforementioned 'higher than 6:1 L/D ratio spin stabilized projectiles'. It took awhile to hunt down but I eventually found some of the original documents that focused on novel projectile shapes (for a large improvement) and non-conical boat tails (for a much smaller improvement)
Obviously this went nowhere insofar as I am aware, and I suspect they had drawbacks nobody addressed (like most do) but it's an interesting thing to look at anyhow. Much of this is the work of one Anders S. Platou, who seems to be as prolific as the RAVEN guy.
AN IMPROVED PROJECTILE BOATTAIL
AN IMPROVED PROJECTILE BOATTAIL. PART II.
Improving the Flight Performance of Projectiles
MUZZLE-BLAST-INDUCED TRAJECTORY PERTURBATION OF NONCONICAL AND CONICAL BOATTAIL PROJECTILES
THE EFFECT OF VARIOUS BOATTAIL SHAPES ON BASE PRESSURE AND OTHER AERODYNAMIC CHARACTERISTICS OF A 7-CALIBER LONG BODY OF REVOLUTION AT M = 1.70
YAWSONDE FLIGHTS OF 155MM NON-CONICAL BOATTAIL PROJECTILES AND THE 155MM M549 PROJECTILE AT TONOPAH TEST RANGE-OCTOBER 1977
YAWSONDE FLIGHTS OF 155MM NON-CONICAL BOATTAIL PROJECTILE-B CONFIGURATIONS AT TONOPAH TEST RANGE--MARCH 1978
AEROBALLISTICS OF 9ORKSCRE1 PROJECTILES (12 page document)
AEROBALLISTICS OF CORKSCREW PROJECTILES (36 page document)