1.5F Swiss vs. 2F

[beltfed]

Next Question:
Did you use the same Volume or did you use the same Weight of 2F that you were using 1.5F?
Example, Back in 2008, "PRE-Paper Patch days" , I did parallel Load Ladder test of loads with KIK 2F compared to my Swiss 1.5 in my 40-65/Lyman Snover bullet in my Brg 40-65
My basic accurate match load was 62 gr Weight Swiss 1.5, The friend who provided the KIK 2F had a 56 g Weight load KIK 2F shooting at matches in TX.
His rifle was also a Brg 40-65.
I checked the bulk density of both powders: 62 gr Swiss, weight of equivalent volume of KIK2F is 58 gr KIK 2F "These Lots, of course"
Then I loaded 56,57,58,etc. thru 62 grains of the KIK2f into RP cases, compressing to the same depth of the 62 gr load of Swiss 1.5.
Shot over the Ohler 33, and targeted at the same time.
Velocity of the 62 gr swiss load was 1260fps, ES 6,SD 2
Velocity of the Equivalent Volume, 58 gr KIK2F was 1207fps, ES13,SD 5
Velocity of the 62 grain Weight of KIK 2F was 1259fps, ES8,SD3.
So, the Same Weight of KIK 2F shot to about the same velicity as the Swiss 1.5 load.
And the 62 grain weight load of the Less Dense KIK 2F
Compressed to the same volume, grouped very close to the 62 gr Weight of Swiss 1.5.
Bottom line was that the KIK 2F appears have the same Energy Weight for Weight, to give
the same velocity as the Swiss 1.5. And the accuracy was very close, to the extent that I did this comparative test.
Oh, obviously the Swiss 1.5 was at that time, the "good old" dense stuff.
Recently, I have had similar comparative results in my 38-50 comparing Same Weight charges
of Swiss 3F, 2F, and an older lot of Swiss 1.5.
Bottom line: I like to compare SAME WEIGHT charges in my load work ups.
beltfed/arnie