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Old February 25, 2005, 07:22 AM   #1
frag
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45 ACP loads

I loaded some 45ACP's with 200gr lead rnfp using 5.1 grains of Unique, just like my load data says. After trying them out, they seem a little light. I had a couple of misfeeds, like it wasn't enough to work the action. Can I safely increase the charge? If so, how much? 5%, 10%?.
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Old February 25, 2005, 07:28 AM   #2
chris downs
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Your data source gives starting loads but not max loads?
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Old February 25, 2005, 09:28 AM   #3
frag
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5.1 grains is the starting and never exceed load.
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Old February 25, 2005, 09:54 AM   #4
BigSlick
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What source are you using for load data ?

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Old February 25, 2005, 10:49 AM   #5
Edward429451
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7.0g Unique will probably put you where you want to be.

But don't just jump up to 7.0, work up in .3 or .5 increments to be safe.

My Lyman book says 7.5g Unique is max for a 200g lead bullet.
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Old February 25, 2005, 05:57 PM   #6
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buy several reloading manuals starting with Lyman # 48
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Old February 25, 2005, 06:46 PM   #7
frag
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I'm using the data from the Lee book
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Old February 25, 2005, 09:28 PM   #8
Leftoverdj
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Frag, you hit either an editorial error or a case in which the original data was worked up using a swaged bullet. Same book, Lee #2 shows 200 grains jacketed data starting at 6.7 with a max of 7.1 grains of Unique. Jacketed tend to give higher pressures than lead.

I'd go to 6.0 grains. That should function the action and still be a mild target load with plenty of safety margin left.
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Old February 26, 2005, 03:03 AM   #9
osirus101
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not sure about unique powder for sure but i load my 45 acp 185 gr 11 grains of bluedot...and 260gr loaded with max loads of 10 grains of bluedot powder

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Old February 27, 2005, 06:57 AM   #10
frag
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Thanks for all the info. I'll gradually work my loads up using the unique.
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Old February 27, 2005, 11:05 AM   #11
beenthere
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Unique

Be sure to check your crimp setting. You can't have it actually gripping into the lead since you headspace on the rim but you need enough pressure to grip the bullet and allow pressure to build before the bullet starts moving.
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Old February 27, 2005, 12:48 PM   #12
DAVID NANCARROW
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According to Lyman's 48th, a 200 grain jacketed hollowpoint starting load is 4 grains, and max is 6.5. A 200 grain lead starting load is 5.0 and max is 7.5 grains. As to jacketed vs lead bullet pressures, its really kind of an apples vs oranges argument, as most jacket bullets will have a longer bearing surface.

Lead bullets, identically shaped will cause more pressure in a given load as they seal to to bore better than copper jackets. Jacketed bullets cause more wear on a bore because it is a harder material, and do not seal as quickly to the bore.

Here's a good example from Midway's load map:
Hornady 200 grain jacketed SWC-never exceed load is 8.1 grains for 21,000 psi. 1053 fps.
Hornady 200 grain LSWC-never exceed load is 7.5 grains for 21,000 psi. 1025 fps.
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Old February 27, 2005, 05:05 PM   #13
Mike Irwin
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The 5.1 grains is the max shown in the Alliant Manual, as well.

http://recipes.alliantpowder.com/rg....20%28target%29

That is, however, for a lead semi-wadcutter target load, so it is going to be light.

The load for the 200 grain jacketed hollow point goes from 5.0 to 7.1 grains of Unique, so you can start GRADUALLY stepping the load up.

Lead loads generally generate less pressure than jacketed loads due to the hardness of the copper jacket vs. soft lead, but you still have to be careful in what you're doing.
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