I'm packing a 14" barreled T/C Contender carbine in 375JDJ gives me 21" barreled 375 Win velocities I'm good out to 250 yards with my Hornady 220gr JHP & 225gr Spitzer loads.
I also have a 21" Contender barrel chambered in 375 Win but find I never load or shoot it and a 21" Contender barrel rechambered to 375JDJ loads are 260gr Accubonds @ 2300fps.
I have rifles in straight walled cases in 375 Win, 10mm, 45 Colt, 454 Casull, 450 Bushmaster and 45-70 these cover anything that the 350 Legend would do for me here in BC = I will be passing on the 350 Legend.