Thanks everyone! Seems like ramrods definitely still make up part of the loading procedure.
I know from Sharpe that they used leather patches to wrap he bullets in to help them catch the rifling. Should have figured from that I'd still need the ramrod.
Well, if the ramrod was required for some reason specific to the gunpowder, rather than the bullet, then replacing said gunpowder with magic might have negated the need for it.
Anyway, I have the answer now, so thanks again everyone!
Just FYI, during the height of single shot long guns, most soldiers were armed with smoothbore muskets, not rifles. There were several reasons for this:
Muskets could be loaded faster. The soldier could essentially drop a round ball down the barrel since it didn't need as tight a fit as a rifled barrel. The ramrod was still used to make sure the ball was against the powder, but much less force was required.
Loading a rifle took longer as it was harder to push the leather wrapped "patched" bullet down the barrel. It was a tighter fit and took more force.
Muskets also were less suspectible to fouling than rifles. With every shot unburned powder would build up. The tighter fit of a bullet in a rifle barrel meant that there was less room for that debris and every seveal shots it would get harder and harder to force the ball down the barrel. The looser fit of muskets made this less of a problem. (It still happened, but it took more shots)
The upside is that musket armed troops had a faster rate of fire. They could fire more volleys than rifles over the same period of time than rifle armed troops. The muskets traded range and accuracy (rifles were more accurate and could be accurate out to longer range) for volume of fire.
The traditional tactic was for musket armed troops to close within 100 yards, or closer, fire a volley or two, and then charge with bayonets.
Meanwhile rifle armed troops were used as skirmishers. They'd fire more accurate shots, at longer ranges, as kind of a harassing fire. They'd retreat back to the main line when the enemy got too close as they couldn't stand up to a charge. (They were more loosely arranged in skirmish lines and didn't have as many men as an enemy muskt armed unit so they knew they coudln't stand up to a charge)
The development of the minie ball, a conical projectile that eleminated the need for the leather patch when fired by rifles, led to the "rifled musket" as used in the U.S. Civil War. These were muzzle loaders, with rifling, but they could be loaded about as fast as smooth bore muskets. They were much more effective and eventually changed tactics.
This may or may not be relevant with your magic gunpowder, but you should know it to figure out how much if it you want to incorporate.