HI... I'm 7mag... And I'm a Blue Dot user.....
I use Blue Dot in my Hi-Point 40S&W, and now my recently aquired Springfield Champion 45ACP.
With the 40 I'm using Nosler 150 JHP with 9.5 gr of Bluedot.
Recoil is very manageable, and accuracy has been very good(especially for me).
With the Champion I'm using Hornady 185gr JHP. Problem is that there is no listing that I can find for that bullet weight and Bluedot. Have been experimenting with the load listings for the 200gr bullet starting with the low end and going up by .2 gr increments of powder.
So far looking like either 9.8gr, and 10.0 gr. seem to be best for it.
I've also used Hogdon Longshot. Recoil seems much "snappier" with both calibers. Although my neighbor seems to love this with his pistol, so I load his with this.
And yesterday I just picked up a can of Ramshot True Blue from the LGS. Was on sale for $15. Some idiot opened it, broke the seal. I got it for $10...
And am now working up loads for this powder.