Thank you for your feed back.
I have played on your design program and come up with this design.
Not sure how else to post the details.
Item # 0.335 nL, 51% meplat, 090_crimp,
.12 x 0.353 straight Gator 9.3mm, 1.0 GtoB, 45 groove: , 5 bands 0.0392 long, 0.88 OAL, 0.07688 ci:
I have added the option for the gas check as it would also aid in the deep seating in the case. The S7W 627 have a very short chamber thus I cant push out to the front. I have some bulged 357 cases on the 180gr CMJ form the deep seating. Would this be a good idea almost like a boat tail but for deep case seating rather than flatter trajectory.
The grease grooves is designed to be somewhere between a traditional lube and a tumble lube.
Your design program is superb and I had lots of fun trying different things.