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**Big O** · 02-28-2008, 12:48 AM

I don't claim to know much about ballistics, but aerodynamically the smaller the diameter, the less drag it produces because it's pushing less air out of the way. If you taper off the back like on a Prius, that's even better.

**rksimple** · 02-28-2008, 7:45 AM

Originally posted by Big O

I don't claim to know much about ballistics, but aerodynamically the smaller the diameter, the less drag it produces because it's pushing less air out of the way. If you taper off the back like on a Prius, that's even better.

I think he's talking about the entire cartridge, not the bullet.

Theoretically, yes. Short and fat cases aid in consistent powder ignition. The normally associated sharper shoulders and longer necks are also said to help accuracy.

**draconianruler** · 02-28-2008, 12:07 PM

Originally posted by rksimple

I think he's talking about the entire cartridge, not the bullet.

Theoretically, yes. Short and fat cases aid in consistent powder ignition. The normally associated sharper shoulders and longer necks are also said to help accuracy.

Yeah I was talking about the entire cartridge or really just the brass, I guess I should have been more specific.

Makes sense about consistent powder ignition. I didn't think about that

**emc002** · 02-28-2008, 2:09 PM

Wow, I thought for sure this was going to be about something else. Suprised to see no Soldier415 comment yet!

+1 on aiding powder iginition (uniformity).

**StraightShooter** · 02-28-2008, 2:35 PM

The grendel and short mag types of rounds help in consistent powder burn but from what I have experienced, the targer the diameter of the rear of the case (the shoulder) the snappier the recoil. Comparing my .300 wsm to a regular .300 win mag this was quite apparent.

**ar15barrels** · 02-28-2008, 2:40 PM

The sharper shoulders help more powder to burn within the case vs. burning down the barrel.
This is thought to improve the consistency of burn and hence the consistency of the ammo.

**ar15barrels** · 02-28-2008, 2:41 PM

Originally posted by emc002

Suprised to see no Soldier415 comment yet!

This thread is just ripe for Soldier415, but Stormfeather tells me that Soldier is short and skinny.

**emc002** · 02-28-2008, 4:07 PM

Originally posted by ar15barrels

This thread is just ripe for Soldier415, but Stormfeather tells me that Soldier is short and skinny.

Ah, yes, their Turkish prison days...

**ViPER395** · 02-28-2008, 5:10 PM

**SVRider** · 02-28-2008, 11:05 PM

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short & fat vs long & skinny

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