Show TEST EXPLOSIVE projectiles satisfactory experiments with ar mor piercing shells washington D C april 10 there were several interesting tests at the naval proving grounds at indian head today to day first came an acceptance test of 0 semi armor piercing n g 13 inch shell cl carril ng a large laree e charge and roil resenting it a lot of 0 fifty such shells thle was required to pierce a 7 inch nickel ackel steel plate aud and carry its burst charge through in condition to explode on the other side aide the shell tested today was ot of the sterling type and completely met the conditions imposed it was made of 0 forged steel and penetrated the plate n inthout sensible deformation or fracture of 0 tits shell next crime camo a test of 0 fixed ammunition tor for a six alx lx inch rapid fire gun the largest gun fun of 0 this type intended for naval use the shells were made by the winchester arms works and functioned perfectly A few days ago some bome tests teats were mada of 0 the service percussion fuse for shells of tho the live inch guns when fired at two inch steel armor plates the fuse then carried through the plates before exploding there tharo were further experiments today to day to determine the distance that the shells carried beyond the plates before exploding it was found that the oie shells after perforating the shells burst at distances ranging from ten to thirteen feet in the he rear this was exactly what wa s wanted as it insures the explosion of the shell in ill the interior of a ship it it gets eels through its side |