The effects of gravity are the same whether you have a ballistic house brick or a pee shooter.
If a large calibre/high energy round ricochets it's generally more dangerous than a small calibre/low energy round. The risk of ricochet though is a different matter.
The Home Office are just playing a numbers game. The less people with high power firearms the less chance of accidents. There's nothing logical or fair about it. As far as I'm concerned if someone is considered safe with a rimmy then they are safe with a CF. f**k all the pre-req's and just introduce a simple safe handling certificate and let everybody that has been vetted and passed the safe handling course have whatever they want.
Not strictly true. Gravity is a constant, but a heavier round with more drag will drop quicker.
However, the a heavier round is also probably in many instances a fired from a more powerful cartridge and thus whilst it has more drag and so sheds energy faster, it also carriers more velocity and energy to start with and so takes longer to shed that energy and so flies further. That's why a .223 travels further than a .22 LR despite gravity being a constant.
I do agree with many of the comments above and Dekers a couple above that a safe shot is a safe shot, with the one caveat that there's no such thing as absolute safety and make no mistake, anything that richochets, will travel a distance that's an equation of it's velocity, energy, weight and drag.
I equally agree that in many instances the police are being pedantic with land checks for calibre. After all there are very few to no reported accidents from Scotland where land is not approved. Safety comes primarily from the shooter not the calibre but equally there should always be an awareness that if a richocet does arise, a more powerful calibre has the potential to travel further.
Edited by Alsone, 21 June 2015 - 10:37 am.