Well i found out what it does not like.
225gr FTX with 80gr of BH209 at 25 yards. The jacket seems too tough for the light load. I had one keyhole and this was it.
The Nosler 250gr did ok with 80gr but started to come to life at 110gr of BH209 at 50 yards.
The 275gr BE needs more powder than 80gr but it didn't key hole even once.
275gr BE 110gr BH209 50 yards
The Nosler 250gr gave me this with a max load at 50 yards.
And the only 100 yard group after being pounded all day.
275gr BE 120gr BH209
Now, these all loaded so easy its not even funny. Fingers only for starting and little more than the weight of the ramrod to seat them on the powder. The only thing i used was a single .460x.060 fiber wad. Fed209A primers stuck a little. The first two pics are with the Feds. All the rest are with plain old Win209s and only one was slightly sticky coming out of the NFPJ adapter. The anvil on the Feds was backing out and required another firing pin strike to come out.
Oh and i did not even swab once or clean the flash channel. I still need to measure the vent liner for wear. So much for the myth that BH209 needs a tight fitting projectile to shoot properly.

Recoil was VERY brisk without the sled.