Got Lee 356-120TC today. Wow.

[wurgerburger]

Measured bullet weight with soft lead (range scrap with 1.5% tin added) 126.2-126.4gr. Nearly none under 126.2, very few over 126.4! I will measure proper statistics some other time, this was from a fistful of test subjects before coating.

Diameter varied some, 9.07-9.09mm with emphasis towards 9.09mm.

The Lee 356-125-R1 mould was a complete failure, because the ogive was too fat for CZ pistols and the bullet diameter was too thin for Beretta and Walther, they have generous bore diameter. So I decided to give this mould a go. The deep angle should cause no problems even with my brother's SP-01 Shadow. I will probably push these through a .358" sizing die just in case.

152942

[wurgerburger]

I was lucky with that fistfull. Here's the data about weight:
n=49



avg



126,226530612245


min



124,7


max



128


stddev



0,559678296808414

[Yodogsandman]

Nice looking boolit! I doubt you'll notice any difference in accuracy from the varied cast weights unless you're a competitive shooter.

[toallmy]

I got one a couple months ago with 6 holes and it makes a pile of pretty little shinies real quick. And they shoot good to.I was pleasantly surprised with the mold.hope you are to.

[rsrocket1]

My 356-120-TC's drop at 0.358" and after powder coating are 0.360". I used to size them to 0.356" so would be able to get them to fit in my Smith & Wesson chambers if any 0.356" part of the bullet were to stick above the case mouth. However, I just got a Beretta 92fs and it slugs at 0.357" so I now size to 0.358" and seat the bullet to where the cone meets the rim. Shoots well out of both types of guns with no tumbling and no leading, but limits the case volume to where I have to go to a slightly slower powder to avoid excess pressure. 3.8g Titegroup feels a bit wimpy so I'm going to chrono them and try some with 4.0g TG also. Unique and 20/28 have worked really well to get me into the 1120 fps range with good case ejection.

http://i270.photobucket.com/albums/jj96/rsrocket1/Shoot/Powder%20Coating/2c60c0aa-5eda-4fef-8e66-ecc978fdd1c6_zpsd0n37avx.jpg

The Lee TL356-124-2R has a distinct step from the driving band down to the nose of the bullet and also works well in both guns for me although I still have to seat 0.265" deep to get the driving band below the rim. That also limits the case volume.

http://i270.photobucket.com/albums/jj96/rsrocket1/Shoot/PTX_zpsljinyike_edit_1440036416217.png_zpsvtkin3kt .jpeg

[Dale53]

That's my "go to " mold for the 9mm. It works quite well in the Kimber Solo and the full size Ruger Auto.

The diameter "as cast" is .357" with my alloy (WW's + 2% tin).

Dale 53

[zomby woof]

Great boolit. Mine run between 118-121, just shy of .358. Works great in my Tanfo and STI 38 super.

[SHMtastic]

I just got the 124 TC and am quite a fan of it. I haven't loaded any, simply casting large amounts while recovering from shoulder surgery. The tumble lube grooves are really nice as well, I will be PC'ing them tomorrow, and then work towards loading them up. Going to be using the foster 1/8" hollow pointer on them also.

So far I'm in love with the TC though!

[kens]

A lot of results in consistant weight are in your own molding technique and rythym.
When the pot temp/mold temp and the sun, moon & stars are aligned you do get real good consistant rythem going..
Looks like you had a real good day.

[fecmech]

The Lee 120 TC and the RCBS 124CN are THE most accurate bullets out of my K-38,<2"@ 50 yds.

[Schrag4]

Nice looking boolit! I doubt you'll notice any difference in accuracy from the varied cast weights unless you're a competitive shooter.

Forgive my ignorance, but assuming the light ones and the heavy ones fly just as straight (is this a bad assumption?), won't the only difference be a vertical variation in the POI? I have it in my head that the most variance you'd see inside of, say, 35 years, would be an inch or so. This is a wild guess based on another wild guess - that the diff in FPS might be 30 or 40 FPS between those light and heavy projectiles. Am I way off? What kind of competition has participants shooting 9mm at great enough distances for that variation in weight to matter? Serious question.

[EMC45]

Great mold and great bullet. I shoot it exclusively in my MK3 BHP sized to .358 over 3.5-3.8gr. Bullseye. Also have had very good results in my Diamond Back DB380 and KelTec P3AT with this very same bullet.

[fredj338]

Nice looking boolit! I doubt you'll notice any difference in accuracy from the varied cast weights unless you're a competitive shooter.
Even for a BE shooter, that weight variation isn't changing anything out to 25yds.

[fredj338]

Forgive my ignorance, but assuming the light ones and the heavy ones fly just as straight (is this a bad assumption?), won't the only difference be a vertical variation in the POI? I have it in my head that the most variance you'd see inside of, say, 35 years, would be an inch or so. This is a wild guess based on another wild guess - that the diff in FPS might be 30 or 40 FPS between those light and heavy projectiles. Am I way off? What kind of competition has participants shooting 9mm at great enough distances for that variation in weight to matter? Serious question.
It isn't POI but felt recoil. Many like heavy for caliber bullets moving slower for a softer shooting load that gives reliable functioning.

[Schrag4]

It isn't POI but felt recoil. Many like heavy for caliber bullets moving slower for a softer shooting load that gives reliable functioning.

Ah, I guess if every shot had a different perceived amount of recoil, that could mess with one's rhythm.

[solderboy]

I like the 356-120TC, my Hi-Power likes them too, loaded with bullseye. My mold casts really consistant, much like the OP states. They drop at 358 and I size them to 357 lubed with NRA 50/50.

[tomme boy]

That one is one of LEE's most accurate and well designed molds they make. If your gun does not shoot this boolit, either you can not shoot or your gun in junk.

[Cherokee]

Lee 120 TC is my "go to" bullet for 9mm and 38 Super. I have two 6 cv molds to keep up with my needs.

[MtGun44]

Excellent design, I keep recommending it to 9mm folk, but they keep wasting money on RNs
that frequently won't fit their throats.

[MaryB]

Mold I use for my HiPoint C9(yes it is a cheap gun, no it doesn't fail a lot in fact 600+ rounds and zero failures), just picked up some CFE Pistol and need to work up a load for it using this boolit!

[baragasam]

Sorry for the thread resurrection, I size to .356 and have acceptable accuracy within 30 years out a M&P Shield 2.0 and even better accuracy out a Glock 17 with a aftermarket barrel. Does this bullet work better in the .357 size? I also had feeding issues with the 2R mold sized to .357 hence why I switched to .356 and I want this 120 TC to work in most pistols.