Bullseye was the original powder used in the 1910 development cartridges and probably billions of military rounds were used with this powder. This is, in my opinion, the "standard" powder, the one you compare against as you test other powders. The original 1910 load used 5.0 grains Bullseye with a 230 FMJ for a required velocity of 800 fps, which is still a good velocity in terms of function and accuracy, for M1911's. Bullseye shooters still use a hardball load of 5.0 grains Bullseye with a 230 FMJ.
Kimber Custom Classic
230 gr LRN 4.5 grs Bullseye Mixed Brass WLP
21-Jun-06 T = 97 °F
OAL 1.250" taper crimp .469"
Ave Vel = 805.2
Std Dev =11.4
ES=54.08
High=836.9
Low=782.8
N =32
230 gr FMJ (R-P) 5.0 grs Bullseye 99' & 2005 mixed lot Mixed Brass WLP (brass) OAL 1.265" taper crimp .469"
12-Dec-11 T= 53 °F
Ave Vel =793.5
Std Dev =18.92
ES = 61.99
High = 817.4
Low = 755.4
N = 16
I have been shooting Bullseye pistol and using a 200 LSWC with 4.0 grs Bullseye as my 50 yard load. It is very satisfying to hit the ten ring at that distance and this load, in my pistol, looks like it will hold the ten ring at that distance. This load has an extremely low standard deviation for a pistol cartridge, which is all to the good for target shooting. I talked to other shooters, Titegroup is used by some with 185's or 200 LSWC's, but I don't know the charge.
M1911 Les Baer Wadcutter
200 LSWC (H&G 68 type) 4.0 grs Bullseye Lot 919 11/2005 WLP Nickle, mixed cases
8-Jun-15 T = 91 °F OAL 1.250" Taper Crimp 0.469"
oiled cases
Ave Vel =742.9
Std Dev =9.89
ES = 33.19
High = 760.6
Low = 727.5
N = 20
accurate
Don't forget to keep your pistol well lubed! Older Bullseye shooters told me the elbow is the drip point!