He has successfully BTDT. If I were pursuing a LR outfit the 6.5 SAUM is where I would start. Magnum Man
Yep, always best to start with a wildcat cartridge that requires sizing down, fireforming and neck-turning. Especially one that starts with currently unavailable brass.
Of course the 6.5 SAUM is bad-azz, but it appears to be a logistical nightmare.
Most who mess with a wildcat are not just "starting"...generally they have been around the horn a time to two with a variety of rifles and cartridges and have very specific ideas of what they want in the way of cartridge performance,and how they want to accomplish it.
Mostly, they aren't "guessing" about how to get there. Necking up and down, blowing out,scarce brass,expensive dies, and other inconveniences that confound and confuse many are simply minor bumps in the road to them
And since their efforts have given us such things as the 7/08, 260, 25/06,35 Whelan,22-250, 6XC,6.5/284, 7 Rem Mag, and a host of others too numerous to mention ,we should thank the intrepid types as we benefit from their efforts.
So, when a guy with Pat's experience tells you the 6.5 SAUM merits attention,smart people will listen closely to what he has to say about it,even if you don't follow the same path.
Rant over...