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  #1  
Old 07-20-2017, 7:24 PM
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Default 40 cal and 10mm interchangeability

So help me out y'all reload masters! A 40 cal projectile is .401 where as 10mm is .400. Can I use the .401 projectiles for reloading 10mm. I understand that it is only .001" difference but better safe than sorry.
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Old 07-20-2017, 7:52 PM
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They do in fact you the exact same bullets.0.400 for jacketed bullets and 0.401/.402 for plated and cast projectiles.

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Old 07-20-2017, 8:39 PM
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Yup same same, load em up!

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Old 07-20-2017, 9:34 PM
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i run 180 cast for both 40 and 10mm, works great
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  #5  
Old 07-20-2017, 10:40 PM
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Quote:
Originally Posted by rubbman View Post
So help me out y'all reload masters! A 40 cal projectile is .401 where as 10mm is .400. Can I use the .401 projectiles for reloading 10mm. I understand that it is only .001" difference but better safe than sorry.
Confusing Isn't It?

Actually .400" converts as 10.16mm. When looking at commercial cartridge designations. Almost nothing is as it seems.

32-20 uses a 31 cal bullet. 38 Special is really a 35 cal. A 41 colt cartridge is really a 38. And a 44 Magnum is a 43 caliber if you round up the bullet dia.

One of the very few current pistol cartridges that is true to designated diameter is the 41 Rem Mag, which actually uses a .410" bullet.
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Old 07-20-2017, 11:32 PM
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You can possibly add .357 to the list of true...

All of my .40/10mm will be .401 just because I say so. And my Lee sizer will back me up on that.
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Old 07-21-2017, 3:49 AM
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Has anyone figured out how much it costs to cast and coat ? I assume your time is free - Too dark for yard work and nothing on T V .
From thanksgiving to about Valentine's Day I am in tier 2 and 3 for Electricity / gas .
I gave away my casting pot and molds [ 380 , 357 and 45 ]
Yes I have solar but not big enough .
Just wondering if it would be cost effective to buy lead , mold another pot .
Maybe 15 years ago I converted my brick BBQ to lead casting [ I bought a pellet BBQ much better than brick ] Now my wife uses as a potting bench for plants , so theres that also .
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Old 07-21-2017, 4:31 AM
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It is interesting to see the metrics and linear neck and necks...

What gets crazy is keeping tools in both measures.
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Old 07-21-2017, 5:56 AM
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Tony, way back when it was worth casting. When tires shops gave away lead weights and before CA started having tin/zinc for wheel weights, it was well worth the damn time. Now with lead being upwards towards 1 dollar a lbs, I find that making 100rds of lead cast and coated is more of a hassle than buying. Don't get me wrong, I still cast but it's not because I'm saving money. The time and effort I put into casting may be some $15-20 ($9 just for lead w/o electricity cost for baking, misc like foil paper and labor) per 100 bullets.
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Old 07-21-2017, 8:35 AM
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Quote:
Originally Posted by pacrat View Post
Confusing Isn't It?

Actually .400" converts as 10.16mm. When looking at commercial cartridge designations. Almost nothing is as it seems.

32-20 uses a 31 cal bullet. 38 Special is really a 35 cal. A 41 colt cartridge is really a 38. And a 44 Magnum is a 43 caliber if you round up the bullet dia.

One of the very few current pistol cartridges that is true to designated diameter is the 41 Rem Mag, which actually uses a .410" bullet.
And 38-40 is really .401 in diameter. I frequently use .40S&W/10mm bullets for my 38-40, when I feel like shooting jacketed or I find some for cheap. They work great.
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Old 07-21-2017, 8:37 AM
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mif_slim
Thanks , I kind of thought that . Right now it runs me about 15-20 cents - that's for jacketed bullets , powder and primers .
Between the smell , handling lead , lead being harder to get / find , leading up barrels , Having to watch powder amounts [ I have 6 nephews and 2 nieces that reload here ] - I stopped using lead years ago .
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Old 07-21-2017, 8:37 AM
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Quote:
Originally Posted by tonyjr View Post
Has anyone figured out how much it costs to cast and coat ? I assume your time is free - Too dark for yard work and nothing on T V .
From thanksgiving to about Valentine's Day I am in tier 2 and 3 for Electricity / gas .
I gave away my casting pot and molds [ 380 , 357 and 45 ]
Yes I have solar but not big enough .
Just wondering if it would be cost effective to buy lead , mold another pot .
Maybe 15 years ago I converted my brick BBQ to lead casting [ I bought a pellet BBQ much better than brick ] Now my wife uses as a potting bench for plants , so theres that also .
$1/pound of lead = 7000 grains
My Lee 401-175-TC drops at 180g
180g * $1/7000g = 2.57 cents

Powder coating
Harbor Freight Red = $5/pound or less if on sale or you buy with 20-25% off coupon so a $5 investment

1/2 teaspoon for > 100 bullets = virtually free

toaster oven from Goodwill $10 or less if you go to their outlet (yes, Goodwill has an outlet where they sell by the pound, my toaster oven cost $3.24)

Parchment paper $0.02/sq ft, about 2 sq ft max to line a toaster oven tray and good for at least 5-10 bakings $4 initial investment, ~$0 added cost per bullet

A 1 gallon ziplock freezer bag for tumbling the bullets and powder or a used Cool Whip or margarine tub - free

Nitrile gloves to pick up the bullets and place them on the baking sheet or tweezers/needle nose pliers. I've only used the gloves because the powder is sticking vigorously to the lead and I actually pick up a bullet, smack it on its base in a pie pan, then place it on the sheet. The smack shakes off excess powder and makes the coating more uniform. I can't imagine the hassles of using tweezers or pliers.

So the added cost of powder coating is on the order of tumble lubing (just about zero). The added time is about 1 hour for 500 bullets (I can place 150-200 bullets on a tray in 15 minutes and it takes about 20 minutes to bake them)

You ought to do this outside or at least on a patio. Use your tablet (I use my iPad mini to stream TV or listen to the radio while casting and coating).
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Old 07-21-2017, 12:38 PM
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^ thats the thing, everything is virtually free u til you add them up. The 1/2 teaspoon is free until the 5 dollar jar is out, so it does cost something. I calculated about 2-4c per 100rds... it is essentilly free, but the time of waiting, casting, sizing, coating, resizing all add up....i wish there were a quicker way but to make it quicker requires more equipment.
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Old 07-21-2017, 2:39 PM
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As I've said before to another member, if 1/20th of a penny is a game-changer, you're playing the wrong game.

That pound lasted over 10,000 bullets and one year. I wasn't dreading going out to buy another pound for $5, but a visit and chat with a local powder coating business landed me 4 pounds of excess surplus powder for free (and I didn't complain about the dollar I spent on gas getting out there and back, nor did I wince at the wear and tear of a couple of extra miles on the car).

The surplus powder pigment doesn't cover perfectly,



but the polymer gives 100% coverage and at 800-1200fps, no one can tell. Zero leading of the barrel.



A single pass with a paper towel and the bore is clean.

Last edited by rsrocket1; 07-21-2017 at 5:58 PM.. Reason: added pictures
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Old 07-21-2017, 2:46 PM
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Quote:
Originally Posted by rsrocket1 View Post
As I've said before to another member, if 1/20th of a penny is a game-changer, you're playing the wrong game.

That pound lasted over 10,000 bullets and one year. I wasn't dreading going out to buy another pound for $5, but a visit and chat with a local powder coating business landed me 4 pounds of excess surplus powder for free (and I didn't complain about the dollar I spent on gas getting out there and back, nor did I wince at the wear and tear of a couple of extra miles on the car).
Ill give you 6$ for it
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Old 07-21-2017, 8:24 PM
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^ you're mean. Hahaha he won't sell it for 6. Maybe 12. It cost next to nothing so 12 is a great price!
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Old 07-21-2017, 10:04 PM
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Quote:
Originally Posted by rsrocket1 View Post
As I've said before to another member, if 1/20th of a penny is a game-changer, you're playing the wrong game.

That pound lasted over 10,000 bullets and one year. I wasn't dreading going out to buy another pound for $5, but a visit and chat with a local powder coating business landed me 4 pounds of excess surplus powder for free (and I didn't complain about the dollar I spent on gas getting out there and back, nor did I wince at the wear and tear of a couple of extra miles on the car).

The surplus powder pigment doesn't cover perfectly,



but the polymer gives 100% coverage and at 800-1200fps, no one can tell. Zero leading of the barrel.



A single pass with a paper towel and the bore is clean.

So what you have is essentially a TWO coat PC. It don't look too great, but at one coat, it is not thick enough for a nice coat, it needs 2 coats. That purple is cool.

Damn, I have paint that I aint even used yet. I prolly have enough for a million + pills...

Another thing about the pigment, I noticed that it is not ALWAYS there. Sometimes it is still covered, but the pigment is lacking, but a closer inspection might reveal that there is a plastic coating there.


Those do not look TOO bad. What are they? 230gr Lee TC .452 Tumble Coat?
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Old 07-22-2017, 7:29 AM
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So what you have is essentially a TWO coat PC. It don't look too great, but at one coat, it is not thick enough for a nice coat, it needs 2 coats. That purple is cool.
Nope, one coat. I've tried 2 coats early on and while you do get better pigment coverage if the pigment doesn't spread evenly with the first coat, you are not adding anything to the performance of the bullet and to me, it's a waste of time.

I've experimented with doing PC under terrible conditions (wet rainy day with high humidity) and got to the point where even the polymer was not coated evenly.
Lee 401-175-TC


But when they when through the sizer, the polymer spreads over the entire drive band (where it counts) and the bullet performed properly (no leading and easy clean up of nothing but soot in the barrel).







Quote:
Damn, I have paint that I aint even used yet. I prolly have enough for a million + pills...

Another thing about the pigment, I noticed that it is not ALWAYS there. Sometimes it is still covered, but the pigment is lacking, but a closer inspection might reveal that there is a plastic coating there.


Those do not look TOO bad. What are they? 230gr Lee TC .452 Tumble Coat?
Yes, the purple ones were with the Lee TL452-230-TC

For years, I simply cast, tumble lubed in 45/45/10 (5 minute effort for 500 bullets plus an overnight dry) and loaded them unsized in the 1911 seating them to where the cone meets the case mouth.



Now with powder coating, I add one hour for coating 500 bullets and another half hour sizing them. A couple sessions of that and I have 1000 bullets ready for loading for a few more months of shooting.

The BHN of the polymer is reported by Sinclair Paint as being "2H" pencil hardness which from a toughness standpoint roughly translates to 26-28 but that might be a bit optimistic. The important thing is I've never experienced leading with PC bullets and cleanup can be done with a paper towel moistened with some Hoppe's No9 or CLP or even a dry Bore Snake.
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Old 07-23-2017, 12:28 AM
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Quote:
Originally Posted by rsrocket1 View Post
Nope, one coat. I've tried 2 coats early on and while you do get better pigment coverage if the pigment doesn't spread evenly with the first coat, you are not adding anything to the performance of the bullet and to me, it's a waste of time.



Now with powder coating, I add one hour for coating 500 bullets and another half hour sizing them. A couple sessions of that and I have 1000 bullets ready for loading for a few more months of shooting.

The BHN of the polymer is reported by Sinclair Paint as being "2H" pencil hardness which from a toughness standpoint roughly translates to 26-28 but that might be a bit optimistic. The important thing is I've never experienced leading with PC bullets and cleanup can be done with a paper towel moistened with some Hoppe's No9 or CLP or even a dry Bore Snake.
3 coats then...

I am more for the artsy portion of this. Honestly though, for THAT PC, and the price you paid, if you are happy with the performance, then who cares about the pigments. Your attitude is right on with the way more people should be, but SOME of us like them purty...

I will admit though, I ONLY did 5 coats for my .45 HPs in my avatar. Two coats for the China Mint Green and then 3 for the red rims. Will I do that for ALL of my Pil-HELL NO.

Glad to hear that it is working out though. That is a great deal.
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