I am going to try some 147gr xtps that I picked up the other day and I am wondering what powders you all are using? I want the most economical load I can get with these. I use clays for my 115 and 124 and I have been pleased, but I can't seem to find data for the 147 using clays. I would assume it is because of the speed of the powder. It is not really suited for the 9mm but it is economical and it has worked just fine for me. I do use SW's blue dot load for the carbine though.
Bullseye and Unique are cost efficient powders in this application and perform well too. Blue Dot does very well with 147gr jacketed bullets in 9mm pistols but is not as cost effective. You will get fewer rounds per pound from Blue Dot than you will from Bullseye and Unique.
I hope you're planning to run the 147gr bullets in a pistol and not out of a carbine length barrel like the HP995. The Speer manual has an excellent discussion about pistol caliber bullets in rifle length barrels; in summary, heavy for the caliber bullets like the 147gr are not recommended out of rifle length barrels.
IMR 700X should be on your short list if you're going for economy. Small loads, low powder price. It probably is the most economical powder for 147gr HDY XTPs. Costs to load your 115 and 125 grainers will be almost the same as the Clays you're using as well.
If you can find load data for Clays, that's probably the way to go.
i used unique and blue dot when i tinkered with 147s, but i got less than steallar accuracy results with my guns using 147s, and dropped back to 124s and 115s. unless you have a specific prupose for the 147s, 124s or 115s are far cheaper to shoot if thats your intent.
I am tinkering with the 147XTP's for a SD load and to carry when up in the mountainyas. Now I know about the "don't carry reload for SD" bit and I am really not worried.
I have never used the 147s before so I just wanted to try them out. When looking at commercial ammo loaded with the 147XTP it was around a buck a shot. I just want to see how low I can reload the same ammo for with some degree of accuracy as well.