Of those loads, Tungsten Matrix is probably the best combo for your gun, if it can handle it. Bismuth works, but is a bit soft and hard to find. TM and Bismuth are pricey. HeviShot and Rem High Density both work very well and are priced more reasonably. The long-discontinued Federal Tungsten Polymer is a great duck load if you happen to find some. Nice Shot and HeviShot Classic Doubles have a good reputation. Of all of those loads, I would lean toward HeviShot Classic Doubles, if you can afford it. Here is why: The Daly and Miroku guns tend to have thinner/lighter barrels than the Browning BSS, and the guns themselves are generally lighter. The hot loads could beat up the gun and the shooter simultaneously. The BSS's had 3" chambers and I think most or all of the Daly and Miroku guns had 2-3/4" chambers, so your ammo selection might be somewhat limited. I have used steel in my BSS 20 with no ill effects, but it has the typically heavy BSS barrels and the chokes have been eased a bit (by the prior owner). If your gun is choked M/F, don't even think about steel or tungsten-iron or HD.