Nope, I mean, what besides maint is so different between my percussion sidelock and my knight MK. The velocity is a little faster, but you still don't have that devistating effect you do with a rifle. Last night, I shot a doe with my muzzleloader. She ran and ran with a good broadside shot. Very little internal damage, very small exit wound compared to my 270 Win. Yes, that 1000 fps increase makes all the difference. When we get past the 2400fps mark, I might consider it.