No a large relatively light weight projectile suffers more from loss of
velocity due to air resistance than a smaller relatively heavy missile. Its nothing to do with necessary weight - indeed the effect would be more pronounced if the sabot had no weight at all.
Note particularly my use of the term 'UN
necessary weight' of the sabot - ie why it is discarded.
- The sabot element is there to accelerate the dart, yes?
- The sabot detaches after leaving the barrel, yes?
- Had the sabot remained surrounding the dart, it would have offered air resistance and decelerated the dart, yes?
- The weight of the sabot - that we both agree detaches before the dart begins its actual mission - though nominally adding to the total mass of the object, is actually irrelevant to the dart as it will add almost nothing to the overall energy involved in the penetration of armour, yes?
- Meanwhile, should the sabot remain attached, it would offer significant air resistance, yes?
- The weight of the dart (and sabot, if such a thing to occur), would increase its propensity to drop (complex calculations about weight vs resistance aside), thus further complicating the targeting solution at anything beyond short-to-medium range
- So, the air resistance of the sabot, given its low weight / energy addition to the dart, is UN
necessary impediment to the dart, hence UN
necessary weight and drag, yes?
Would you prefer if I said less-optimal density of the sabot combined with drag for the overall dart energy? It is pretty irrelevant as anyone who understands these things would have completely comprehended what I was saying.