Nahhh .. the oxidation won't hurt a thing as long as it's not thick on the ball. Now, if you dug up a ball dropped 150 years ago, and tried to shoot it, oxidation and deposits on it would be quite thick and would hinder loading.
But in your case, won't hurt a thing.
Musketeer's joke about, "Next thing ya know, they'll be selling camo roundballs!" struck a chord with me.
Remington makes brass-plated round balls. When introduced, Remington claimed that the brass plating reduced leading in black powder guns.
Howzat again?
Clearly, the Remington folks are bamboozling their customers, or at least those with minimal muzzleloading experience.
Think about it ...
A lead ball in a rifle is surrounded by a patch. It never touches the rifling. Thus, it cannot lead the bore.
And when used in a cap and ball sixgun, ramming the oversized ball into the chamber shaves a ring of lead from the ball. Thus, the brass coating is removed with the ring of lead and the rifling touches lead, not brass.
Besides, the coating on the balls is so very thin. Little more than a wash.
Oh sure, some will say that the leading comes from the BASE of the ball, and not the sides, as it does in modern lead bullets with smokeless powder.
But black powder doesn't generate the pressure or heat that smokeless powder does, to melt the base of a round ball and leave lead deposits in the bore.
Anyway, a blatant falsity from Remington, solely designed to make their lead balls look better without offering any real advantage.
The only real advantage I see to the Remington brass-plated balls is one of identification. Should you and another hunter shoot the same deer, and the ball is recovered, the presence or absence of a brass wash on the ball will prove or dispute your claim.
Unless, of course, he's also using Remington brass-plated balls, which is not likely.
I don't often see the Remington brass-plated balls. Most round ball shooters seem to make their own or buy Speer or Hornady, or order off the net from Warren Muzzleloading (Warren has an amazing variety of balls, projectiles and accessories).
Yep, I agree Musketeer: RealTree projectiles are next. Followed by RealTree cloth patches. Then someone will introduce green black powder so game isn't startled by seeing that deep black color when you're loading.
And I like the assertion that bright balls will glint and spook game! LMAO!
Kinda reminds me of a post I read years ago on an early guns and loading website. Someone told this id-yut that smokeless ball powder was easier on barrels because the balls tended to roll down the barrel, whereas stick powder with its sharp edges tended to abrade the bore!
He prolly stills believe it --- and is now the editor of a major gun magazine!