
40 rounds on the left are 36 grains of 5744 with the 300 grain bullet, 10 rounds on the right with the same nose bullet in a 350 grain weight, backed up with 80 grains of Swiss 1-½. 2 rounds on the lid are the only Bertram in the box.
Most of my cases are made from 45 Basic by CSA, HDS and about 50 that have no headstamp, plus a couple hundred Bertram Brass true 40-90 Bottleneck cases. Rim thickness for the Bertram is tad different. While the Bertram brass fits in a #14 RCBS shellholder, they don't fit in the Pacific made for the 45-70 family cases.
Set for the next range day:

Finished filling my "Pound" of 185grain WFN .452s. Pulled 10 out, sized and lubed, then loaded for testing in one of 1911s for function. They fit well in the case gauge... now we'll see if they feed in any of the full-size 1911s. Work like a champ thru the Combat Commander, but I'm thinking of using these in 3-Gun matches. They should run about 910fps. The one on the left is my 45-225-CAV I normally only load in the 45Colt with BP for Cowboy Action.

Not bad for just 3 hours out in the reloadin' shop!