All of Alco Bullets are handmade for precision accuracy and designed for marksmen who what a superior projectile. We do custom make our .308 and .224 calibers in a flat base (no rebated boat tail) for those who request them. They are not something we have in stock, but are available through special order and usually take a few days to produce. Just give us a call at 417-501-6961 or email firstname.lastname@example.org – we appreciate it. Thank you.