TL356-124-2R vs. TL356-124-TC

[helg]

I have both molds, and no feed problems with either bullet. The TC bullets show better accuracy. I believe that this occurs due to longer driving band of the TC bullet.

In my guns the ejected round never touches the bullet that is being fed. The touching may leave a ding on the bullet, especially on the cast one, and affect accuracy.

[crashguy]

Resurrection.. just to add my experience... I use both the Lee 356 124 tl 2R and the Lee 356 125 2R the Lee 125 runs without a problem in all 9s... the 124 tl design does exactly what the OP describes in a Glock 19 factory mags however in a 9mm carbine.. same mags no issue at all .. same loads for both designs... 5g HS-6 with a dropped weight of 130g sized 356 and powder coated .... 980-1000 fps (with 4in bbl)

[rintinglen]

Bingo. Excellent advice quoted above.

I have the LEE 120tc. There is no step, so there is nothing to snag, and it works well and is plenty accurate. There is no reason to consider another TL bullet that may give you the same frustrating results in your XDm. Even if the 124tc TL design works twice as well as the one you have now, that's still 1 out of 50 rounds that will malfunction. That seems like an unacceptable risk to take when the 120tc will do what you need it to do.

This is precisely my choice and reasoning. If you look at the boolits, you will see what the sagacious one was talking about. There is NO lip to catch. A nice taper crimp and you should be off to the races.

[Boogieman]

I have this mould on order. would you share load info? OAL. ,PC, or grease lub ,size dia. I'm using Lyman #358242 RN just wanted to try something else

[Ranger 7]

Been using the Lee 124 TL for 6 years with: Witness full size 9MM, StI Escort 9mm, SW 469 9mm and P1 (Modern P38).
No problems.
The bullet must be seated so the leading TL ridge/band has 85% exposed (to act as bumper), exposing nothing for the spent case to catch on.