Longfeather is absolutely correct - after 40 years of shooting ML's and not useing one of them, we had an oportunity to try the C02 discharger and it was quite incredible. The spent ball bounced around the shop a bit, so make certain you have a good backstop. Tightly loaded balls will develop some velocity.

A charge of 110gr. of powder and 2 balls will not blow up that 12 bore - however, it will kick a bit more than normal. We've all fired off a double ball load - no problem, and at considerably higher pressures than that charge will develope in the Kodiak. Now- the MOST important thing to do, if you are going to fire it off, is to make damn certain the second ball is on the top, touching, rammed against the first ball. There cannot be ANY air space between them, or a ringed or burst barrel will be the reward.

The ball puller is, of course a necessary item for everyone's 'tool bag', which should also contain a small screw driver, jag, spare nipples or leather pads and flints, nipple wrench, even spare main springs and mainspring vice. Best method for pulling a ball, is to have a drill set into a bore sized brass collar that screws onto the rod tip. The drill is sized to drill a small hole into the ball, so that the ball screw doesn't expand the ball too tightly in the bore as it's turned into the ball. this works to perfection, especially if you're using WW alloy balls. The bore sized brass collar is to drill a hole perfectly centered in the bore. If it isn't centered, it or the screw might attempt to cut into the ball against the side of the bore, damaging the rifling. Without the proper tools for removal, I'd shoot it out, and get that rifle cleaned. Then - I'd invest in a C02 discharger. One small C02 cantiner has enough gas to dispel many 'objects' from the bore. The good ones use only a small amount of gas, just like a pellet gun, only a bit more gas than that.