well, i really dont no nor care what the malcontent mc is attempting to convey with his post here...

but, the 90/30 guideline i use was revealed to me by a gunsmith with over 60 years of experience...

he kept me out of trouble for over 20 years...

until i learn something better, i will continue to follow old ed's guidelines...re shotgun barrel walls and other things gun related...

Last edited by ed good; 06/27/22 02:14 PM.
keep it simple and keep it safe...