Attn. CW Bullet people: What kind of bullet is this?

[VOL1266-X]

I was doing a little scouting this morning in an area that saw Union CW activity and dug this lead bullet. It measured .695 in. dia. and had been fired as evidenced by the nose and rifling marks. It rang up a 61-66 at 7 in. on the F75 display which is high for a CW bullet.
All the experts seem to agree on is that it's CW period but the hi base 2 rings has all of us stumped. Any help appreciated and I can get a better pic tomorrow if needed. The bullet has a coating that we see when we dig bullets under cedar trees but this one was in a field. Thanks, Quindy.

 

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[duggap]

Looks like a modern wadcutter.

 

[VOL1266-X]

Looks like a modern wadcutter.

Thanks DG but I didn't know they came in .69 cal. It was the same depth as the CW relics there. It has a white patina under the brown coating too. HH, Quindy.

 

[DirtyMike]

Could it be a 69 cal gardner?

 

[VOL1266-X]

Could it be a 69 cal gardner?

A .69 Gardiner without an insert was one theory Mike. Thanks, Quindy.

 

[TheCannonballGuy]

Contrary to popular belief, the Gardner minie never had a lead-cup insert. The diagram in the McKee-&-Mason book is incorrect. The only thing that was inserted into a Gardner minie's base was the edge of the paper cartridge.

VOL1266-X, your mystery-bullet is definitely not a Gardner. I must add, I've never seen one like it. But that being said... I do NOT believe I've seen everything there is to see among civil war bullet types.

Your mystery-bullet's reported .695 diameter would seem to be the result of being fired out of a .69-caliber rifle, whose rifling-grooves added .005-inch to the bullet's diameter.

In your photo of the mystery-bullet's base, it appears to be 7-groove rifling. But that may be just an optical illusion. So, please do your best to count the total number of rifling-grooves on it, and tell us the number. None of my relic-research library's books list a civil war era (or earlier) .69-caliber rifle which has 7 rifling-grooves. The number of rifling-grooves on your mysterybullet will help us determine whether it is civil war era or a later era.