What's the Max distance you would use a 165 gr Sierra SBT Gameking on for deer. I'm using near max loads of Varget. I'd have to go downstairs to see what load I had worked up. I'm shooting a Remmy SPS tac., 20in barrel with a MUeller Tac II 3-10x44. I've been shooting steel out to 400 for a while now. But I'm really just wanting to know the max effective range of this bullet with good shot placement.