Well Gm54-120 and BarnesAddict, everything arrived last week. And with it's arrival I learned something quickly. The 275 Parkers are a no go from the start. They are .451-452 and that doesn't work with a full sizer. I needed .458. If I had a smooth sizing die they would work. So back to the idea train I went. Dad had a pretty good bin full of several .458 size bullets for his .458 socom. While sorting through that mountain of bullets I ran across some 300 grain Nosler Ballistic Tips. I do believe we have a winner with them. After a couple of tries I got the sizer set up to size the bullet for a perfect heavy one handed loading for that barrel. I did decide not to duplex and went with 4198. Started out with just 60 grains just to get the feel of things and pretty much dial things in. I ended up at 68 grains with the rifle zeroed at 150 yards. I had Alex set the old gong up at 300 yards for her and I to have a little fun. Her with her little Thompson Center Impact and me with this demon spawn. I centered the gong 10 out of 10. She banged it 10 out of 10. I do believe the old man would have been happier than a hog in slop with this rifle. If it's nice this weekend I'll pull it out again and do some fine tuning and run it across the chronograph to get some speeds. I would really like to thank you both for the information you helped the old man with in putting this together. I can see it now, he would have been on the phone with me almost instantly to get my big rear over there to do some shooting.