Hmm. This doesn't make sense.

The Monte Carlo model is just that, a Monte Carlo stocked Scott. (equal drop at heel and comb)

The fact that it has different drops and quite a bit at heel may suggest that someone made it a live pigeon gun after purchase.

If the gun is in good mechanical order it will shoot loads up to 7800psi quite safely. I have a Scott from 1891 that I shoot regularly using B&P High Pheasant 2.5" game loads. (appx. 7800psi) in one once shot. For regular shooting, the B&P F2 subsounds in 7.5 or 9 shot (UK sizes, really are US 7s and 8s) with 7/8 ounce of lead are at about 5800psi and will handle thousands of rounds with no issues.

I've seen many Monte Carlos and they very in quality up to almost the quality of "Best Guns" like their premiers, others are just off the rack moderate grade guns with a monte carlo stock.

Incidentally, the B&P shells I mentioned are better than the RST and Polywads in my opinion and cost only $80 a case with no tax and free shipping. ($8 a box)