I would use the 180 gr Nosler Partition, in front of a starting load of 43.0 grs IMR 4064, and work up to around 45.0 grs as my MAX. This sin't the max you will find in load books,those loads were designed for bolt action rifles, or test barrels, not double rifles. This MAX load will generate about 2480 fps., and I would be very careful going higher than the 45.0 gr load. This is a very nice load for double rifles, if your rifle will shoot it, and it will take any Moose that ever lived quite nicely. The 180 gr Nosler Partition will expand fast enough to work fine on small deer, yet hold on to enough weight to pennetrate deaply on animals like Moose, or bear. I like the protected point version of the NP

The nickel plated cases are fine for re-loading, and work through the chambers of a little Merkel double rifle like quicksilver! I wish I could get nickel plated cases for all the Nitro Express cartridges I load for!