Hi get the Redding Comp Seater and the Type S bushing Full length Die. Use the full length die every time and bump the shoulder about 1 thou each time this will ensure you get your best case life and also you should not have any troubles with feeding or extraction. if you have any trouble with getting the projectiles staying in place under recoil use a smaler bushing and if that does not work buy a Lee factory crimp die and give them a small crimp. Do not use your expander button when sizing you may need it to make the new cases round before preping them and chamfering the necks then replace it with the small black collet that holds the decaping pin onto the decaping rod and you will not strech the cases as much and will have more consistant handloads.
Cheers Bill
Austrlaia