Can old, heavier returnable beer bottles handle 3.5 volumes of CO2?

[CereousBrewer]

I have several cases of vintage Busch returnables (1970's) that I was planning on using for a strong golden Belgian ale. I want to carb to 3.5 volumes of CO2, which calculates to 7 oz of dextrose. Will these bottles handle the pressure or do I need to buy some 22 oz ale bottles?

 

[85shadow]

You know, I posted a question on bottles a week ago. I remember these bottle - truly returnable and refillable. I wondered how they compared to today's bottles.