reloading 45 and changing powder

Hi,
I just finished my bottle of Bullseye and moving to TiteGroup and want to know if there is any recommendations for the change in case fill.

I removed all remaining TiteGroup from the hopper and system. So the reloader is starting fresh. (Hornady L-n=L AP)
I was loading 3.8 grains for my 45 with CCI primers and 200g LSW.
From what I see I'm the charts I have found, 3.8 on Tite, is about the same as 3.8 on Bullseye.
I'm thinking to just weigh out the Bullseye to the 3.8 and shoot a few. I'm guessing there will be a volume difference so i expect to make a change to the power fill plunger. 

Just posting to see if there are any thoughts.
thanks,
Alex

usually takes a little more tightgroup to equal bulseye, if 3.8 was your be load, try a few at 4.0 with tightgroup