04-22-2024, 08:00 PM
1. Miwall (use ammoseek) and Powder valley both have Lever available. Shipping/hazmats (if any) are more reasonable than in earlier years.
2. I do not have any experience using Super, except in a couple other calibers, and in those it was nothing to write home about, did not have the consistency I expect and got in other powders. In my Grt Spf is only a "development load" so that doesn't yield any useful info - it shows pretty SLOW.
3. The powders used by mfrs are more often than not, proprietary ones not available to the public. Sure, in the early days of the 6.5 creedmoor Hdy was publishing its loads for the 120, 140 on the boxes to generate some marketing traffic. But no longer. The powder in the current Hdy rounds are not public. Even in the case of "superformance" it has become known that they tune each "Spf" to the caliber and bullet they are selling, so each one differs. So again, it is very doubtful you have it on your shelf.
4. I do have a successful 107 SMK load in my bolt arc (22"), yields 2718 fps, and 100% burn. I tried extending length to 26" to see what it shows (Grt), and the same load shows 2818 fps, my independent calc method shows it would be on a node (so does Grt). Of course that is with my lot# of Lvr, 29.7. Others will of course differ somewhat but it's definitely in the ballpark for a 26" shooter.
5. The 2024 Hodgdon data does not show Spf as a powder for the 107 smk. So bottom line, it would not be my choice for a powder at all.
Their 2024 data do list Staball match, 760/414, and Acc 2560, CFE... a lot of choices. And note that their data is for 52.0 ksi Saami max (ie, gas gun), so with some development and Grt to help you could get a bit more MV and stay under the 60 ksi limit of a bolt gun.
6, If you decide to switch to the 105 Hdy bthp, bear in mind its shorter COAL as it is stubbier, typically ~2.200 cartridge OALs... whereas for my SMK I could use 2.250 = more powder room potentially. The 105 does shoot well in my guns as a btw. But so did the 107.
Then there is the berger 105 Vld... also good.
Lots of options without using a potentially non-performing and waste-of-time powder in the Arc.
My 2 cents. Stay safe and best wishes in your shooting.
2. I do not have any experience using Super, except in a couple other calibers, and in those it was nothing to write home about, did not have the consistency I expect and got in other powders. In my Grt Spf is only a "development load" so that doesn't yield any useful info - it shows pretty SLOW.
3. The powders used by mfrs are more often than not, proprietary ones not available to the public. Sure, in the early days of the 6.5 creedmoor Hdy was publishing its loads for the 120, 140 on the boxes to generate some marketing traffic. But no longer. The powder in the current Hdy rounds are not public. Even in the case of "superformance" it has become known that they tune each "Spf" to the caliber and bullet they are selling, so each one differs. So again, it is very doubtful you have it on your shelf.
4. I do have a successful 107 SMK load in my bolt arc (22"), yields 2718 fps, and 100% burn. I tried extending length to 26" to see what it shows (Grt), and the same load shows 2818 fps, my independent calc method shows it would be on a node (so does Grt). Of course that is with my lot# of Lvr, 29.7. Others will of course differ somewhat but it's definitely in the ballpark for a 26" shooter.
5. The 2024 Hodgdon data does not show Spf as a powder for the 107 smk. So bottom line, it would not be my choice for a powder at all.
Their 2024 data do list Staball match, 760/414, and Acc 2560, CFE... a lot of choices. And note that their data is for 52.0 ksi Saami max (ie, gas gun), so with some development and Grt to help you could get a bit more MV and stay under the 60 ksi limit of a bolt gun.
6, If you decide to switch to the 105 Hdy bthp, bear in mind its shorter COAL as it is stubbier, typically ~2.200 cartridge OALs... whereas for my SMK I could use 2.250 = more powder room potentially. The 105 does shoot well in my guns as a btw. But so did the 107.
Then there is the berger 105 Vld... also good.
Lots of options without using a potentially non-performing and waste-of-time powder in the Arc.
My 2 cents. Stay safe and best wishes in your shooting.