45 ACP velocity and barrel length help please

im looking into a new ---MILLENNIUM PRO™ 145 .45 ACP POLYMER PISTOL IN MATTE STAINLESS STEEL--- for a pretty good price but would like to know what velocity i can expect with standard loads from a 3.25" barrel.

has anyone done some chrono work with a similar barrel length 45 auto. what is the hottest you would consider safe to load a lead 200-230g bullet in a taurus?


any help appreciated please and thank you

You can expect to lose from 50 to 100 FPS per inch in 45 ACP barrels. You can do the math. :)

My carry load of 7gr Power Pistol, 230gr XTPs, gives me 816fps from my 3" Kimber, & 875fps out of a 5" barrel. 60fps loss with 2" less barrel.(YMMV):)

7.6 grains of WSF under a 185 grain HP/XTP gives me 850 fps from my Kimber 3". And almost 950 fps from my Colt 1911 with Wilson match S/S barrel.

April handloader just ran a test of three Kimbers. Two were 5" and one was 3".

Average velocity of 8 loads for the two 5" guns was 835 & 830 FPS.

The 3" averaged 722 FPS.

rc

4" CDP II
Berry's 185 SWC/ Berry's 200 HP/ Hornady 200 FMJ-CT/ Zero JHP
HI 892/ HI 829/ HI 829/ HI 776
LO 878/ LO 807/ LO 814/ LO 765
AVG 886/ AVG 821/ AVG 821/ AVG 770
ES 14/ ES 22/ ES 15/ ES 11
SD 4/ SD 7/ SD 4/ SD 4
3" CDP II
Berry's 185 SWC/ Berry's 200 HP/ Hornady 200 FMJ-CT/ Zero JHP
HI 876/ HI 793/ HI 789/ HI 744
LO 838/ LO 772/ LO 752/ LO 726
AVG 849/ AVG 784/ AVG 776/ AVG 735
ES 38/ ES 21/ ES 37/ ES 18
SD 13/ SD 9/ SD 14/ SD 7
Lost 37 FPS/ Lost 37 FPS/ Lost 45 FPS / Lost 35 FPS

Wish I had shot them in a 5" gun that day as well.