240....(Yours said 236 when I came here....thats why I made comment about it not adding up right. If I missed read-it sorry....if you edited it...can you tell me how to do that LOL - have no idea yet how to do it)
257- The .257 Roberts a medium powered .25 caliber cartridge known affectionately as the Bob. It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the .22 and 6mm, and the strong energy but not the strong recoil of larger popular hunting calibers, such as the 7mm family and the popular .30-06.