This Is Neat!
- Thread starter JWFilips
- Start date
Kevin Stenberg
Well-Known Member
All i can say is WOW.
RBHarter
West Central AR
If those were OM inert projectile 76 mm shells , they like to 105 mm and earlier 3"/50 had bagged powder charges inside the cases . The muzzle debris were bag parts . The bagged charges in 105s are in lighter and coarser cotton than flour sack , just a long skinny pillow case with a draw string top and an over powder card to give near zero case space after projectile seating . The typical powder kernel is by eyeball about .20-23×.675 with 7-9 longitudinal perferations basically 4831 scaled up 10x or so . The powder is bagged on a tare scale separately from production lines to eliminate powder spills . If you've fumbled a full case lately or had a measure bridge unload after you moved the case or pan you can imagine 10-20# going on the floor except it screws up a whole semi manual hydraulic 5 cell assy line when there's a spill .
The light for twist and after exit waiting for the spin and air drag to catch up is pretty obvious too . I don't know right off what a 76mm standard weight projectile is but TNT weighs about the same as concrete and era APs generally had a weighted core behind a hardened point and a faux nose cap for BC bump , one hold over book for 6 projectiles of slightly different weight and MV to hit the same POI at 500 & 1000 yd . You only have to be 150 ft with a fragmenting shell at any range but you have to be inside 30" to disable another tank with an AP or EP . Probably 12" for a kill unless you have the high ground and can shoot the engine room . Again in the era .
The light for twist and after exit waiting for the spin and air drag to catch up is pretty obvious too . I don't know right off what a 76mm standard weight projectile is but TNT weighs about the same as concrete and era APs generally had a weighted core behind a hardened point and a faux nose cap for BC bump , one hold over book for 6 projectiles of slightly different weight and MV to hit the same POI at 500 & 1000 yd . You only have to be 150 ft with a fragmenting shell at any range but you have to be inside 30" to disable another tank with an AP or EP . Probably 12" for a kill unless you have the high ground and can shoot the engine room . Again in the era .
FrankCVA42
Active Member
Our ship used to host a dependents day cruise about once a year. Let me tell you a 500 pound bomb makes a heck of a noise when your down in the engine room. Kinda disconcerting to see the main engine room steam line swaying back and forth. 600 pounds at 900 degrees can fill an engine room in seconds. 5"x54's make a nice bang as well. Best place to sightsee one going off is slightly above (flightdeck) and behind the turret. Still have an ash tray I made from one of the fired empty shell casings. Markings are almost gone from being polished over the last 50 some odd years. Thanks for the memories. Frank