Talk:6 mm PPC

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[edit] Same hole

I removed the following statement:

Being that the bullet diameter is 0.243", a 0.2" pattern essentially means that all 5 bullets are in the same hole.

Because it is incorrect. Group size is typically measured center-to-center, meaning a .2" group with a .243 caliber rifle would have an outside measurement of .443. Having a .2" hole from a .243 bullet is not possible, even with one shot, your best group outside measurement would be .243. The 5 bullets may all be in the same hole, and a very small hole it is indeed, but it is not a single hole of the caliber used. Arthurrh 21:51, 16 September 2007 (UTC)

[edit] Efficiency

The article had a claim that the 6PPC was the most efficient 6mm cartridge available "producing a higher velocity with less powder than any other 6mm". Without having a reliable source, it's a pretty strong bordering on ridiculous statement so I removed it. Obviously somewhat smaller cartridges with light bullets produce higher velocities per charge than larger cases. However there are even smaller 6mm cartridges that are even more efficient with light bullets. For example take a look at the 6x45mm (aka 6mm-223) and the 6x47mm. Both produce higher velocities with a 60 grain bullet and BL-C(2) powder than the 6PPC. (Data from Hodgdons using max loads for that bullet/cartridge/powder combination).

Cartridge	Bullet Weight	Powder	Charge	Velocity
6PPC	60 gr	BL-C(2)	31.5	3041 ft/s
6x47 mm	60 gr	BL-C(2)	30.5	3233 ft/s
6x45 mm (6mmx223)	60 gr	BL-C(2)	30.0	3156 ft/s

Arthurrh 00:58, 5 October 2007 (UTC)