A CZ .375 H&H will weigh about 9-1/2 to 10 lbs,depending upon the scope you use. Also the CZ will hold 5 rounds of .375 H&H ammo. The M 70 and MRC will probably weigh in the 9 to 9-1/2 lbs range,again depending upon which scope you use.
Had a CZ .416 Rigby and had zero problems with the feeding of soft or solids in the rifle. If you encounter such problems,call CZ and most likely they will fix it.
My Interarms Whitworth .375 H&H weighs 9-1/2 lbs with a Leupold 2.5x scope. Found it late last year in a LGS for $850.
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