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Q:
what is a good powder charge for reloading a .243 with unique powder

Question by hickboy518. Uploaded on January 22, 2010

Answers (14)

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from Clay Cooper wrote 4 years 12 weeks ago

YOU DON"T!!!!!!!!!!!!!!!!!!!!!!!!

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from Beekeeper wrote 4 years 12 weeks ago

Don't even think about it!!!!!!!!!!!!!!!!!!!!!!!!!!!
That is a shotgun powder and is not suitable for rifle loads. It is sometimes used for reduced loads in centerfire rifle cartridges but this is a dangerous undertaking as load density is not sufficient and hang fires and excessive pressure can occur.

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from Clay Cooper wrote 4 years 12 weeks ago

I do have loading data to use Unique for the 243, it's for cast bullets only

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from Clay Cooper wrote 4 years 12 weeks ago

Think about a tire with 32 psi blowing up.

Now think about a rifle designed for 52,000 psi blowing up in your face

Any questions :)

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from Clay Cooper wrote 4 years 12 weeks ago

PS look at my pics, you will see what a rifle looks like with barrel obstruction. Now imagine the barrel blowing up on the other end, the end with the highest pressure.

Example: 30-06 loaded with a 150 grain bullet will peak at 52,000 psi approximately 2 inches into the barrel and taper off to 12,000 psi at the muzzle of 24 inches.

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from Clay Cooper wrote 4 years 12 weeks ago

What brand, type and grain bullet are you loading?

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from hickboy518 wrote 4 years 12 weeks ago

its a 100 grain jacketed bullet I used 11 grains with it an old timer told me to try but I found it to be very innaccurate and wanted to try somthing else

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from Clay Cooper wrote 4 years 12 weeks ago

I'm a die hard IMR Fan

For a 100 grain 243 load

IMR4350 with 42.0 grains at 2958 fps

http://www.imrpowder.com/PDF/Hodgdon%20Basic%20Manual.pdf

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from hickboy518 wrote 4 years 12 weeks ago

i load plenty of light loads for center rifles with unique i load 223, 30-30,22-250 a few to say the least but there all really light recoling varint rounds to say the least so I was lokkin to put a little more power in the bullet

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from sgaredneck wrote 4 years 12 weeks ago

I've heard of the "so many grains of powder" Unique loads for rifles but there isn't very much published data. IMO it could be dangerous with a jacketed bullet. I use Unique for my .45ACP loads and nothing else.

I have an older Speer manual (#11) that list some reduced loads for a 90 grain bullet and a 105 grain bullet with IMR 4198. These loads could maybe be a starting point for you. The 95gr. loads were in the 1760-1990 fps range and the 105 gr. loads were in the 1750-1950 range.

I'd feel a lot safer recommending the IMR 4198 for what you are trying to do than Unique.

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from sgaredneck wrote 4 years 12 weeks ago

That should have been '90 gr. loads were in the 1760-1990fps range.' I just made my own case for being careful about accuracy of things posted on the internet.

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from Clay Cooper wrote 4 years 12 weeks ago

Hodgens H450 with 48.2 at 3100 fps sounds good, but it's a max charge. I would start at 45.0 and work up

-1 Good Comment? | | Report
from WA Mtnhunter wrote 4 years 12 weeks ago

There are lots of unpublished loads that will send you to a gunsmith or the hospital! Never ever use a pistol powder in a rifle cartridge unless you have published load from the powder or bullet manufacturer.

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from sgaredneck wrote 4 years 12 weeks ago

Amen Brother!

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from Beekeeper wrote 4 years 12 weeks ago

Don't even think about it!!!!!!!!!!!!!!!!!!!!!!!!!!!
That is a shotgun powder and is not suitable for rifle loads. It is sometimes used for reduced loads in centerfire rifle cartridges but this is a dangerous undertaking as load density is not sufficient and hang fires and excessive pressure can occur.

+2 Good Comment? | | Report
from Clay Cooper wrote 4 years 12 weeks ago

I do have loading data to use Unique for the 243, it's for cast bullets only

+1 Good Comment? | | Report
from WA Mtnhunter wrote 4 years 12 weeks ago

There are lots of unpublished loads that will send you to a gunsmith or the hospital! Never ever use a pistol powder in a rifle cartridge unless you have published load from the powder or bullet manufacturer.

+1 Good Comment? | | Report
from Clay Cooper wrote 4 years 12 weeks ago

YOU DON"T!!!!!!!!!!!!!!!!!!!!!!!!

0 Good Comment? | | Report
from Clay Cooper wrote 4 years 12 weeks ago

Think about a tire with 32 psi blowing up.

Now think about a rifle designed for 52,000 psi blowing up in your face

Any questions :)

0 Good Comment? | | Report
from Clay Cooper wrote 4 years 12 weeks ago

PS look at my pics, you will see what a rifle looks like with barrel obstruction. Now imagine the barrel blowing up on the other end, the end with the highest pressure.

Example: 30-06 loaded with a 150 grain bullet will peak at 52,000 psi approximately 2 inches into the barrel and taper off to 12,000 psi at the muzzle of 24 inches.

0 Good Comment? | | Report
from Clay Cooper wrote 4 years 12 weeks ago

What brand, type and grain bullet are you loading?

0 Good Comment? | | Report
from hickboy518 wrote 4 years 12 weeks ago

its a 100 grain jacketed bullet I used 11 grains with it an old timer told me to try but I found it to be very innaccurate and wanted to try somthing else

0 Good Comment? | | Report
from Clay Cooper wrote 4 years 12 weeks ago

I'm a die hard IMR Fan

For a 100 grain 243 load

IMR4350 with 42.0 grains at 2958 fps

http://www.imrpowder.com/PDF/Hodgdon%20Basic%20Manual.pdf

0 Good Comment? | | Report
from hickboy518 wrote 4 years 12 weeks ago

i load plenty of light loads for center rifles with unique i load 223, 30-30,22-250 a few to say the least but there all really light recoling varint rounds to say the least so I was lokkin to put a little more power in the bullet

0 Good Comment? | | Report
from sgaredneck wrote 4 years 12 weeks ago

I've heard of the "so many grains of powder" Unique loads for rifles but there isn't very much published data. IMO it could be dangerous with a jacketed bullet. I use Unique for my .45ACP loads and nothing else.

I have an older Speer manual (#11) that list some reduced loads for a 90 grain bullet and a 105 grain bullet with IMR 4198. These loads could maybe be a starting point for you. The 95gr. loads were in the 1760-1990 fps range and the 105 gr. loads were in the 1750-1950 range.

I'd feel a lot safer recommending the IMR 4198 for what you are trying to do than Unique.

0 Good Comment? | | Report
from sgaredneck wrote 4 years 12 weeks ago

That should have been '90 gr. loads were in the 1760-1990fps range.' I just made my own case for being careful about accuracy of things posted on the internet.

0 Good Comment? | | Report
from sgaredneck wrote 4 years 12 weeks ago

Amen Brother!

0 Good Comment? | | Report
from Clay Cooper wrote 4 years 12 weeks ago

Hodgens H450 with 48.2 at 3100 fps sounds good, but it's a max charge. I would start at 45.0 and work up

-1 Good Comment? | | Report

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