30x357 maximum

[sunnysmarine]

I have a 6.5 Max done by OTT, it gets almost the same velocity as 6.5 TCU. I just shortened a set of 6.5 TCU dies and Mike chambered the barrel from them. Neat little round and as usual for OTT barrels it shoots extremely well.

Al. any initial case head sizing issues? thinking this through is hurting a bit, I can see my first barrel bill, 25 26 27 30 338

I already started this with 360 DW brass, should of gone Max

[HotRodAl]

No I have had zero problems with sizing issues, the Max brass has to be annealed before sizing if you are using Remington brand, if not I get case splits about 50% of the time when fireforming. I haven't used any other brands in forming this round. I do have some WW brand and IHMSA brand Max brass also. I do have some 360 DW brass but haven't done anything with it, was considering a rimmed 300 BK, but have a couple thousand formed 300 BK rounds already.

[sunnysmarine]

I have 221FB 300 BO and a 338 of mine all rimmed using 360 brass, I am planning on having the 300 bored deeper you have to cut to much off the finished 300 case as is,
I do have a 256 win mag thinking it needs to go super

[Mjshell]

I do have a 256 win mag thinking it needs to go super

I’ve given thought to that but then I enjoy shooting my 256 win mag to much. Maybe some day I will come across another 256 at the right price and have it rechambered to the max.