30-378 200gr LRX load data/advice

[hunter7mmRM]

Hey does any one have load data for the 30-378? I have H50bmg powder on hand and want to use 200gr LRX bullets. I’ve emailed Barnes but no reply yet.
Any advice with this cartridge would be appreciated as well, boat tail vs flat base bullets etc . Rifle is an accumark

 

[hunters home]

I've got a Mark V Syn in 30/378. I've never used H-50BMG in mine. My load is 200 gr Nosler Part _ Fed 215- Wea case and 115 grs of H-870. Vel is around 3200 ft/sec, with good accuracy. I've tried the 200 LRX with RL-33 and H-870, but didn't get the accuracy I was looking for. One thing I found with this cartridge is when ever I switched away from the Fed 215 primer weird things would happen, pressure spikes, hang fires etc. The CCI-250 was the worst, at least in my rifle.