.40 S&W boolit profile

[Mattog22]

What is the most preferred .40 S&W boolit profile for USPSA, IDPA, 3-gun action shooting? I was looking at the 175 gr TC TL Lee 6 banger molds since I have had good luck thus far with the 230 gr TL RN one that I have. I will be shooting this in a 1911 style gun.

[mooman76]

TC style bullits usually work best in the 40 and 175gr seem real popular too.

[mike in co]

What is the most preferred .40 S&W boolit profile for USPSA, IDPA, 3-gun action shooting? I was looking at the 175 gr TC TL Lee 6 banger molds since I have had good luck thus far with the 230 gr TL RN one that I have. I will be shooting this in a 1911 style gun.

depends on how you want to "play the game"....
some go for light weight a 135 right at 1000 fps, some go the other direction and shoot 180's at 900 fps plus...

i started with 180/175 have gone down to 165's and have 135's to try next.

mike in co

[casterofboolits]

The 40-175-TCBB is extremly popular and can be used in the 40S&W and 10mm. Second is a 40-145-TC I cast.

[Mattog22]

I tend to like the heavier weights anyway. I haven't looked but Im guessing my load data for 180 gr j bullets will be pretty close for 175 gr cast. I will start lower of course. I am using the TL molds for my .45 acp with good luck, can I expect to have good results in .40 as well or will the microbands not be as effective in the higher pressure .40?

[HammerMTB]

I use the 175 Lee TC in my .40 and 10MM. I took the BB off the mold when I got convinced it would be better off without it. I'm none too sure that helped, but it's much more difficult to put back on than remove. Tho I am not using the TL style boolit, I am using LLA on it, and it runs to 10MM velocitys fine that way.
I can't say I know if heavy and slow or light and fast is more popular, but the 175 needs about 970 FPS for a 175 PF. That seems to have enough pressure to run the comp fairly well.
Load 'em up and let 'er buck! :Fire: