First, MEASURE YOUR BORE DIAMETER. Nominally it should be .550-.555" in diameter, not a true .560". It makes a difference. A 28 gauge smoothbore is nominally .550". .54 caliber RIFLED barrels are .540 across the land( bore diameter) but grooves may be as much as .010" deep. Normally, however, grooves are not that deep in those rifles.
The Vegetable fiber wads that Track and others sell are made by Walter's Fiber Wads, in Oklahoma, and are purposely made .010" larger in diameter than the bore diameter of the barrel. So, that is why TRACK personnel told you that a .560" diameter fiber wad will work in that .550" bore.
If for some reason you have an overbore diameter barrel, then you have to look at wads the next gauge up. Call Circle Fly, as they offer the widest selection of wads, including odd-numbered gauges. For instance, a 27 gauge bore is Nominally .556" in diameter, and a 26 gauge bore is Nominally .563" in diameter. Add .010" to the diameter of either of those gauges and you will find a wad the correct diameter from you barrel.
BUT THIS ALL BEGINS WITH A CORRECT, ACCURATE, MEASUREMENT OF YOUR BORE- NOT SOMEONE'S MARKING ON THE BARREL, OR SOMETHING SOMEONE TOLD YOU!
I have your problem( maybe you do?) with my 20 gauge smoothbore. My barrel actually MEASURES .626-.627" in bore diameter, closer to a 19 gauge smoothbore( nominally .629") than a Nominal .615" diameter for the 20 gauge bore. So, I have some 19 gauge wads I use in that barrel.
Its always ALSO POSSIBLE to have a bore that is UNDERSIZED- say, a 21 gauge( nominally.605")-- instead of a true 20 gauge bore.
We have several members here who have found that their barrels are undersized( .605"), and they have to order lead balls, or molds to cast a ball that is .580-.585" in diameter to fire out of those barrels, instead of the typical .600" diameter ball usually fired out of 20 gauge smoothbores. In my case, I am trying .610" diameter balls in my oversized barrel.
So, If it turns out that you actually have a .560" diameter bore in that gun, don't feel picked on.
:shocked2: It happens to the best of us. :idunno: :surrender:
Circle Fly, that has been making wads and cards for many years, seems to have anticipated this problem nicely, and can fix you up with the correct sized wads and cards.
Track doesn't carry everything for everyone. They do a fine job, most of the time, but they don't carry all of the Circle Fly inventory.
The other OPTION is to buy Felt Wads, which are softer, and do Not seal the bore as well. However, if you stack them 2 high, together they do a pretty good job in those 28 gauge barrels, particularly if you order the larger, 24 bore( .58 caliber) felt wads. With a RB, those oversized felt wads will form a cup around the base of your PRB, filling in the air space that would exist if a flat hard wad were used instead.
You do have to learn to center the felt wads on the muzzle, so that you can push them into the bore evenly, and not lop-sided. And, you may have to thin a loading jag down somewhat to make room for those thick felt wads, so that they will not grab onto the jag and pull back out of the barrel. But, others have worked out these minor problems, and I am sure you can handle them, too.
