Tamus
Well-Known Member
You mustn't doubt yourself so.
Your lecturer was right and Orion quoted why.
The projectile must be no les than .240" OR generate no less than 1,700 of your English and Welsh foot pounds and there are instances of such projectiles (that are less than .240" but do acheive the qualifying ME) but only from .308 and .30-06 .22 accelerator rounds.
Other sub .240 calibres, that generate the ME also exist but they are generally barrel burning horrors of wildcat calibres.
The only other exception that comes to mind are the mono-metal banded (bore riders) from people such as South Africa's GS custom bullets and even then you've got to use one of the mini magnum .22's to get it up over the velocity required. So, these are only realistically specialist reloaders' options.
Your lecturer was right and Orion quoted why.
The projectile must be no les than .240" OR generate no less than 1,700 of your English and Welsh foot pounds and there are instances of such projectiles (that are less than .240" but do acheive the qualifying ME) but only from .308 and .30-06 .22 accelerator rounds.
Other sub .240 calibres, that generate the ME also exist but they are generally barrel burning horrors of wildcat calibres.
The only other exception that comes to mind are the mono-metal banded (bore riders) from people such as South Africa's GS custom bullets and even then you've got to use one of the mini magnum .22's to get it up over the velocity required. So, these are only realistically specialist reloaders' options.


