Feedback on truncated cone for 9mm

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Clovishound

Blackhawk
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Jan 3, 2012
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Summerville SC
I have been waiting for 9mm dies to come back in stock. I see that the 120 grain truncated cone mold is available. The 125 grain round nose is not.

I see that the profile of the bullet looks very similar to the profile of the JHPs that I have used without problem in my SR9c. Just wonder if anybody has had experience good, bad or indifferent with this type of bullet.
 

Clovishound

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Jan 3, 2012
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Summerville SC
I have found my SR9c to be very forgiving in the feeding category. The only problem I have had with my reloads is some start loads with the slower powder I am now using won't cycle the slide reliably. By the time I get to the middle loads for this powder, accuracy improves and they cycle quite reliably. I have tried a number of bullet profiles and weights, as well as several different OALs, none of them have caused feed problems. When we were developing loads for our 9s, my buddy would frequently give me a handful of rounds that would not feed, or cycle through his gun. My Ruger would eat them up and ask for more.
 

98Redline

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My Taurus PT-92 has not problem with TC shaped bullets. They feed just as well as RN.
 

PO2Hammer

Single-Sixer
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Sep 4, 2003
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Minnesota
I only owned one 9mm that didn't shoot TC's reliably, a Beretta 92 Billenium.
Other than that they all seem to prefer the TC for accuracy and no other feed issues.
Better terminal performance too.
 

sixshot

Buckeye
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soda springs, idaho
The bullet you mention is the old Lyman #356402 & as mentioned was designed for the 9mm. I have an ancient 4 cavity Lyman & I size them to .355" for the 380's, I size them to .356" for the 9mm's, .357" for the 38 Super & .358" for my 38 specials & 357maggies. They really don't size at all to .358", it just lubes them & they shoot fine. Great bullet in my little J frame S&W carry gun using 4.2 grs of WST.

Dick
 

Cherokee

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May 21, 2003
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Location
Medina, Ohio, USA
I have/use the Lyman 356402 and Lee 356-120 in 9mm & 38 Super loads, all sized to .356. The Lee has a shorter but wider nose than the Lyman, but both use the same nose punch for seating/sizing. Same weight. Both work great and have good acuracy. I favor the Lee 356-120TC (not tumble lube) because the mold is 6 cavity aluminm and much lighter for casting than the Lyman 4 cavity steel. The Lee works in High Power, Caspian 1911, XDM9, XD9C, Para high cap, Colt 1911, EAA Witness, to name a few.
 

sixshot

Buckeye
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Not telling anyone what to do but fitted nose punches for handgun bullets (flat) can cause problems if the top punch & the sizer die are not in perfect alignment, its much easier (and simpler) to have one or two flat top punches & use them for everything. The flat top punch self aligns, the fitted punches do not.

Dick
 

Iron Mike Golf

Blackhawk
Joined
Feb 15, 2010
Messages
945
My SR9c loves the SAECO #383. It's a SWC, but with the tiniest of SWC shoulders (all but a TC). I haven't shot a TC from mine, but all sorts of RN and and HP along with the #383 and never had a feeding problem. I wouldn't hesitate to plunk down money on a TC mold for mine.

If you are concerned about investing in a mold, though, you should head on over to Cast Boolits: http://castboolits.gunloads.com/forum.php

Someone may be shooting the bullet you are looking at from an SR9c. If not, you can probably find someone who will part with a dozen or so of that bullet for you to test with.
 

Rodfac

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Mar 11, 2009
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Kentucky
I've had equal accuracy with both types...the RN types from Missouri Bullets, sized .356" and the Lyman truncated cone #356402 sized .356. The guns were a Series 70 1911 in 9mm with Colt barrel, a Combat Commander in .38 Super and 9mm, a Glock with a Lone Wolf and Storm Lake replacement barrels, a Sig P226 Mk25, and another Sig P290, both in 9mm.

I've used a variety of powders from Bullseye on the fast side to Herco on the slow with about equal results. I've not done much with sizing, accepting .356" as a given. Of the guns above, the 1911 in 9mm has a custom barrel and bushing and the Sig P226 is a known accurate gun...in these two, playing around with sizing might make some difference, but the others are run of the mill in these calibers. I've slugged the barrels and found all were within .001" of .355"-.356"....none being considerably over size...a big factor in leading.

Accuracy runs between 2 and 3" at 25 yds from rest; not sterling but good enuf for defensive practice shooting, and much cheaper than jacketed bullets. I've had some leading issues with both types, but found that after normal sizing and lubing with 50-50 beeswax and alox, lightly lubing with Lee Liquid Alox clears up the problem and actually improves accuracy by 1/2" at 25 yds. It's my standard practice now, even with commercially produced bullets...and in other calibers as well.

HTH's Rod
 

Vulcan Bob

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Mar 5, 2009
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Location
central Pa
Hi there, I cast the RCBS-9mm-124-CN and am very pleased with it in my 9mms. Cast with straight wheel weight alloy they throw at 130 grains and .359 dia. Sized at .358 and lubed with SPG they work just fine in my, Hi Power, S&W M&P, S&W 39 and Rock Island Armory 1911. It seems the truncated cone style works well in most pistols. Good luck!
 

Paul B

Hunter
Joined
Dec 4, 1999
Messages
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Tucson, AZ
I shoot the Lyman #356402 in three 9MM handguns. My mold casts a .359" bullet and I size to .358". "Oh! But that's too fat for use in a 9mm. accuracy will suck and they'll lead the barrel badly."
I strongly suggest those having leading problems in their 9MM handguns slug the barrel. Two of mine had .357" groove dimeters and the last one .3575". :shock: BBBBBBut they're supposed to be .356". Obama and the Congress are supose to support and defend the Constitution but seems like they forgot about that part of their oath.
Just a thought, at least on US made 9MM's. The make .38 Spl. and .357 mag. barrels as well and a .357" groove diameter works reasonably with most jacketed ammo so why bother to make the smallergroove diameter? FWIW I've slugged the barels on severl other 9mm guns of different make than my three and they too had .357" groove diameters. Smith & Wesson diameters have th be somewhat guesstimated as they have five grooves and lands. It takes a special type micrometer to get an accurate reading. I take several and average them out to make a reasonably accurate estimate of the diameter. If I'm having a good day, I can usually get 1.5" groups from my guns at 25 yards.
Paul B.
 

FergusonTO35

Hunter
Joined
Aug 26, 2010
Messages
2,420
Location
Boonesborough, KY
The Lee 120 TC is my go to 9mm bullet. All my guns feed it and shoot it with great accuracy. This bullet plus 3.2 grains Bullseye is my carry load in my Kel-Tec PF9. It gets a consistent 950 fps and is easy to shoot.
 

Cherokee

Single-Sixer
Joined
May 21, 2003
Messages
472
Location
Medina, Ohio, USA
sixshot said:
Not telling anyone what to do but fitted nose punches for handgun bullets (flat) can cause problems if the top punch & the sizer die are not in perfect alignment, its much easier (and simpler) to have one or two flat top punches & use them for everything. The flat top punch self aligns, the fitted punches do not.

Dick

I was speaking of the seating nose punch primarily but I also use the fitted nose punch for the 356402 in my Star sizer - works great and the ammo results support that. However, I agree with you on most CB sizing with the Star sizers.
 

Clovishound

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Jan 3, 2012
Messages
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Location
Summerville SC
Well, by the time I decided to pull the trigger on this mold, they were out of stock again. Came back in stock a little while while back, and I ordered it. It came in last week, and I cast a handful.

Lee has made some changes to their molds. The big change was the alignment pins. Seems like a big improvement to me. I had no trouble at all getting the mold to lock up tight and aligned. No need to set the mold on a flat surface for alignment when closing. :D

The bullets cast at .356 to .3565, so I just lubed them up and loaded a set of test rounds. Made it to the range today and fired them. Accuracy was as good as the commercial hard cast round nose I have used before. Leading was minimal to nonexistent. Fed like a champ. I seated them just a little above the single lube groove, which led to a rather short OAL, but as I said, they fed just fine.

By the way, they make good looking bullets for cast.

5dcs.jpg
 

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