Which shoots cleaner? 243W or 6CM?

I've been shooting an older Remington 243 with the heavy varmint profile barrel.

Compared to my 6x47L and 6BR, this thing gets super dirty. 44 rounds and it takes several passes with a wet brush, soak, and a half dozen soaked patches to get clean. My load is 32.5 SW Precision behind a 105 BTHP. It made me wonder how 6CM does in comparison.

 

As far as I know when it comes to cleaning a rifle Each rifle is a law Unto it’s self meaning what works for me may not work for you and vice versa is a 6 cm
Cleaner than a .243 Winchester I’m not sure of that I think the much more Modern design helps the Creedmoor vs the .243 Win in all aspects of a rifle and cartridge combo

 

I've heard higher quality barrels are easier to clean. I have no idea if that is true or not but its always made sense to me. I figure that factory barrels are probably a bit more rough inside.

I'm assuming the 6x47 and 6 BR have better barrels than a old factory Remington?

 

I shot through over 2 dozen 243win and 243AI barrels between ~2000 and ~2014. I’m on 11 barrels in 6 creed currently since 2017. Absolutely no difference between cleaning the two - the difference between two individual barrels in each could be considerably more substantial than the difference between the two cartridges when loaded with similar bullet weights and powders.

Hand lapped barrels clean easier than raw machined bores. 5R cleans easier than conventional square-cornered rifling. Polygonal rifling cleans easier than angular rifling. Don’t overcomplicate anything else about it. Mechanical and chemical cleaning - keep it simple, and just clean the rifle.

 

Yes. 243 has a factory carbon steel barrel, 6x47 is a stainless Hawk Hill, 6BR is carbon steel but I'm not sure of the maker. It was a trade deal and was told that it was a Douglas, and it shoots really well.

 

How dirty the barrel gets is largely dependent on the type of propellant and type of bullets used.

 

I bet it's that powder.
Someone I know loads and shoots a lot of 243winchester and 6.5creedmoor, uses w760 in both and both look fairly dirty after shooting at the range.
I'm moving more towards IMR, low nitroglycerin stick powders and other single base powders now.