the Colt Delta is a neat gun, I wonder what types of loads are not acceptable to shoot in them? Are they beyond the max loads you find in a reloading manual? For instance would a 200 grain XTP with 12.5 grains of #9 and 37,000PSI be too much (from Ramshot data). There are 40 Smith and wessons that have higher pressures than that and with this load your shooting a 200 grain bullet at almost 1200 fps.