Firt off I need to say I have not used BH-209. The price of it alone has turned me completely off of it. I no longer use T7 becuase of the hygroscopic properties. I never had any problems cleaning with T7-I just didn't like the properties of the powder. It did shoot very accurately. But it did need cleaned between shots to maintain that accuracy. And in my case I mean cleaned, not swabbed.

I think the tight bore is more a function of mfrs. preparing their firearms and sabots for the use of 209 primers. The sabot needs to be tighter in the bore or the 209 primer will simply blow the load out of the barrel. Thus changing the volume, and thus the acuracy.

Either you need to clean a rifle with BH-209 or you don't?? If you have to clean a rifle then how much longer can it possibly take to clean a rifle shot with BH-209 and straight BP?? Really?? How much longer??

I can easily shoot my rifle 30 times with BP. I can't see how cleaning time can be that much different with BP insted of BH if you stil have to clean it. How many minutes of your life are you loosing?? Tom.