Not an exact answer to your question but I would look at the Vortex Defender caps. I got away from Butler Creek when I found these. I never got set of BC caps to fit right. Either too big or too small. IMOH.
I think the Butler Creek scope caps work well. But I do sometimes wonder whether BC and the scope makers use the same units of measure for the scope's outside diameter. I just take the scope to the local gun shop and use the "designated size" as a beginning point, trying larger/smaller to find the best fit. But I have the good fortune to have a well-stocked shop about 20 minutes from home.