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According to Speer # 12, 243 Winchester and 6mm (AKA 244) Remington both use a 0.243 bullet.

Looks like it's all same/same to me.
 

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Discussion Starter · #6 ·
ok thanks. I'd figure I'd ask the 'dummy' question vs blowing myself up. ;)

I'm at work now, boax ain't hnear me so don't remember projectile weight.

if needed I can post it later.

thanks
 

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There is nothing more convincing than measuring the diameter with a good caliper. If the 6mm diameter matches 243 then you are good to go. But I can tell you from experience that it will if the bullets are made to industry specs.

LDBennett
 

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Discussion Starter · #8 ·
only reason I ask is I only recently started relaoding for 243, and only had 1 box of projectiles.. hornady I believe.. and it mentione .243(6mm) on the side of the box. and these other I bought just said 6mm.

I'll pull the micrometer out and drop a few of each between the jaws and see how they measure out.

I have a feeling they are the same.. just thought I'd ask if others had seem any difference in some marked 6mm vs some marked .243(6mm)

thanks to all
 

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Yes, they are the same. I also reload for the .243. The Hornady SST's I have are marked:

6mm
.243

Mine are 95 grain. I shoot a remington 788 bolt action. The rifle is a tack driver. I'm a bad shot and it makes me look good.
 

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Do you have a micrometer soundguy??
 

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Yes, they are the same. I also reload for the .243. The Hornady SST's I have are marked:

6mm
.243

Mine are 95 grain. I shoot a remington 788 bolt action. The rifle is a tack driver. I'm a bad shot and it makes me look good.
I have 6.5s that do the same:)
 
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