9MM set up Casting

[Gliden07]

I have been following MtGun44 guide on Casting and Loading 9MM rounds. I slugged my Barrel and came up with .353 dia (Bottom of grove to Bottom of grove) with a Micrometer. Despite MtGun44 warning against Tumble Lube Boolits I am going to try, I have the C frame press and have been sizing my 45 Boolits like that. I choose the Lee TL-356-124-TC mold and the Lee 90046 sizing kit suppose to size to .356 dia. According to MtGun44 tutorial the Boolits should be .001-.002 bigger than slug. Will the .356 be to Large for my gun? I'm understanding the 9MM can be a bear to reload sometime so I'm trying to get it as close as possible.

[runfiverun]

353 is not your groove measurement.
it's most likely your bore measurement,which would make your groove measurement more like 357.

[Gliden07]

353 is not your groove measurement.
it's most likely your bore measurement,which would make your groove measurement more like 357.

When I got home tonight I read your response and was concerned I messed up. I pulled the slug out and stuck it under my magnifier. Turns out I measured from a Land to a Groove so the real measurement Groove to Groove is .355 inch's. So the .356 mold and Sizer should be OK?

[MtGun44]

.356 or .357 should work if you are showing .355. Hope my notes are helping.

Good luck, I do understand the attraction of the TL method, and some have had good
results. I'm sure you will get this sorted out.

Bill

[Gliden07]

I do plan on getting a Lube Sizer. Just need to wait for the right deal, going to school so money is tight! I try and save a couple bucks every week toward my loading/Gun addiction!! LOL!!

Bill as far as your notes go since I am going to use the Tumble Lube Mold for now we shall see when the hammer falls!! But the notes have given me a GREAT start, and like most of this hobby I'm sure I'll learn something else along the way!!

[stinjie]

The lee TL356-124 is what I've recently cast 250 boolits with.Using alox lube,some went through the lee 356 sizer,some were loaded as cast.At the range today,the non sized ones were a slight bit more accurate out of my PF9,than the sized ones.No leading issues yet.You should have good results from that mold as well.