Acquired this Vectan Ba7 1/2 powder from Grafs and Sons pretty much right as the powder supply was drying up.
Their data lists it as comparable to Accurate #7, IMR 4756, and Vihtavouri N110, but I don't see that from my testing.
The data I can find for #7 (Ramshot data) seems like way too much powder for the Ba7.5.
They list for a Berrys 180HP 6.8(865)-8.0(1001). Should use slightly more for the FN vs HP.
I started at 6.0-7.0 of Ba7.5 and had a case rupture at 6.8, and just the beginnings of primer flattening at 7.0.
Note: I am using CCI Small Rifle Primers as that is all I can get...
Ran a second set at 4.9-5.9 of Ba7.5 after the failure at 6.8.
.40 S&W Berrys 180g Plated FN, Ba7 1/2 from 4.9-5.9 then another run at 6.0-7.0 All through a Glock 22 Gen 4.
Charge / FPS Avg / SD
4.9 / 680.8 / 7.8 would not cycle action
5.1 / 718.8 / 8.1 would cycle action
5.3 / 758.8 / 13.5
5.5 / 780.2 / 17.3
5.7 / 800.8 / 10.3
5.9 / 825.5 / 6.9
6.0 / 846.2 / 1.5
6.2 / 872.6 / 14.8
6.4 / 903.2 / 3.5
6.6 / 892.0 / 8.5 (note: only 2 shots in this group, bad light for chrono)
6.8 / 942.3 / 13.6 Had 1 case rupture at the base. Gotta love .40... Still continued... For Science...
7.0 / 957.3 / 3.8 First signs of some primer flattening, but very little.
Seems like 5.9-6.0 may be the sweet spot for this load. Have yet to do accuracy testing. I have 5 of each load waiting for that day...
Hope this helps someone.