HEAD0001
I did talk to Melvin after getting this one. Its one of the first 50 made. I told him i would like a 45cal with a 1-24 twist with a slightly heavier contour near the action and i promised i would not shoot sabotless with smokeless. He said he could do it but it would take several months to get it done. He didn't say he would but that he could if it was for sabot use only.
Im so impressed with it i may sell 2 guns (plus the Savage) and get a custom 45 instead of getting a 45 PacNor/McGowen for my Savage. Im fairly sure he will make one if i ask nicely.

Im not chasing the 3000fps "dragon" or 2600fps sabotless so im happy with his recommended level of performance.
When i called i was REALLY impressed that i got him on the first 2 rings and complimented him on that level of service. He was extremely helpful with understanding the design and told me to call him anytime i had a question. His bolt/breach plug design is better than the Savage IMO but harder to load a primer.
Primers looked great even with nearly a max load. No visible signs of high pressure at all and i checked every one since im fairly new to smokeless MLing. His design really supports the primer extremely well IMO and ignition was flawless.
I used the new Knight/Lehigh range rod and man it worked well. You really get a nice feel of how the sabot is loading and barrel consistency/variations/fouling/ect. I thought my Knight barrels with a good JB polish felt good but this hand lapped Douglas barrel is like Knight and Day.

I love my Knights too but this is really a sweet barrel.
First to last shot POI variations amazed me. N110 is really clean so fouling is minimal. The last 260gr shot was after a 40min cool down while we had birthday cake.

I did blow 2 sabots while experimenting with a couple of other loads i know are a PITA to get to shoot well in a smokeless ML. I got a 50x40 load to shoot without blowing sabots but it is likely just a tad faster than BH209. It still needs more work to get any groups worth posting but shows a little promise as a fun load.