I have fired a lot of JHP .223 bullets into wall board. They do not break up as you suggest. Of course, it depends on the type and brand of JHP as to how many walls they will penetrate.
The problem is that if you use a very light weight bullet and a very fragile bullet, it may not make the FBI penetration standard.
My AR-15s are loaded with Soft Point ammo of high quality.
Pick one from this site: http://www.ar15.com/ammo/project/Self_Defense_Ammo_FAQ/index.htm
The problem is that if you use a very light weight bullet and a very fragile bullet, it may not make the FBI penetration standard.
My AR-15s are loaded with Soft Point ammo of high quality.
Pick one from this site: http://www.ar15.com/ammo/project/Self_Defense_Ammo_FAQ/index.htm