Considering that a 45-70 can be loaded from a trap door load level to a 458 Win Mag load level, pretty much any load you want, in a Siamese Mauser. Some folks thnk the Siamese is the first Mauser, however, it is in fact the last major modification of a military production 98 Mauser, there is no reason at all to try and make it less than it is capable of being, if you can simply load the 45-70 down.
By the way, a good Siamese action for conversion in the last few years has gone way up in value as folks realize what they really are.
