ironranger, no. The one he quoted is the right one. The one you showed is for a 50 S&W pistol or something - it's a 50 cal bullet. We shoot 45 (or some 44cal bullets with sabots). You'll also need to buy some bulk sabots: 50/45 cal. That's 50 outside diam and 45 inside - the size of the bullet. You may want to buy some average thick sabots like these http://www.midsouthshooterssupply.com/item.asp?sku=0011550096and some really thin ones like these http://www.midsouthshooterssupply.com/item.asp?sku=00072H15045BRlike I just did. That way you can find out what works best in your rifle. The sabot makes a lot of difference.