Compressing Swiss 1.5

[Opencountry]

I traded a can of Swiss 1.5 (an older lot) for a can of my Goex Fg so that my friend and I could sample one another's powder. I wanted to try the Swiss in my 45-70, and he the Goex Fg in his 45 2 7/8". I found that his Swiss 1.5 powder was very dense weightwise per volume, and 63 grains needed very little compression to achieve target accuracy. I was sold on the Swiss! I ordered a case last month for my 45-70 and my future 45-90. I've been working my way from about .070" compression (60 grains) up to around .20" compression (65 grains) so far. I'm still hunting for that target accuracy load, and will need to try 66,67,68, or more grains. Compression will be going up to and beyond .30" when I get up to 68 grains. The new lot is less dense and requires more compression. The lot number is 030.111. From what I have read on another forum it's not uncommon to have to compress quite a bit to find good accuracy. I guess I was just plain lucky with his can of older powder. Anyone else have the same experience with the newer lots of Swiss 1.5?

Robert