Found this big 3 ringer 30 grams or 463 grains with my F75 with my new NEL Big Coil. Also found this engraved ring. Also, a heal plate. Is the Bullet and Heel plate CW and what could the bullet size be? i have another 3 ringer that only weighs 20 grams or 308 grains.
Some nice finds there! You would have to use a calipers or micrometer to get a diameter off the bullet to know the caliber. I really can't even guess at age though.
Some good relics nalc , the minnie ball is huge !! maybe a .69 caliber as for the heel plate unless it was found on a battlefield its really hard to say .