that's too easy...
it don't work like that there is a minimum calibre from memory which is .243 but no upper limit in scotland. In england the minimum was .243 but now each region (county and police force) has it's own opinions as new rounds are much faster but each has it's own problems hence they now want everyone to to have DM certs and training. If you fall foul of the law then it's simple don't pass go, don't collect £200, it's go straight to jail. I think from memory and I could be wrong as I've forgotten more about firearm law than most will ever know about it.
In scotland it has to do with landowners rights, we test .50 up there and we make lots of noise and never have a problem. We tested a hand build rifle down south and got arrested.
it's genius...
I Think you got your firearms law a little mixed up here
There is no minimum calibre for scotland the firearms act /deer act say's for shooting any deer you must use a bullet of not less than 100grains with a muzzle velocity of no less than 2450 feet/second giving a muzzle energy of greater than1750foot,pounds,
these conditions must be met regardless of calibre, but does usually mean a rifle greater than .243
the only exception is Roe deer these can be shot using a bullet of more than 50grains with a muzzle energy of more than 1000foot,poundsand muzzle velocity of 2450ft/sec in effect you could use a 222 for roe I myself have used a 223 for roe in scotland.
The Act for England & Wales does specify a calibre of no less than .240 also it must generate a muzzle energy of greater than 1700foot pounds,
the only exception is for muntjac and chinese water deer which Have come in line with the rule for roe in scotland.
ther is NO upper limit on calibre for deer stalking on the mainland in the Uk, the police may wish to impose upon you a calibre restriction but like everything else with firearms it is up to you to show good reason for ownership and use
you say the police require you to have a Dm 1&2
this is again misleading there is no requirement within the Act nor in the guidance to FLO's for a stalker to have a DS1 or 2 but they will advise you to do it as it shows competance and again good reason
From LOIQ...An open license in parts of the country is actually very hard to get, for the simple reason they (the police) don't want to have any have go hero's wandering about letting rip with any sort of weapon. let alone one that can really do some damage.
An open licence is not hard to get at all if you have land over which to shoot and can prove to your FLO that you are safe, 90% of deer stalkers and fox shooters in the UK have open licenses as they can justify the need and since 2008 advice from theACPO( Association of chief police officers) any deer calibre rfle a stalker own's can be used for vermin control regardless of calibre.
as for shooting over land Iv'e never had a problem with the police, so long as I'm polite and go about my business within the law.
And to finish you can't shoot what the hell you like in scotland even if you have got the land owners permission unless you got a open ticket for the firearm you are using or you might find you will get arrested
I suggest you go to the BASC website and read the guidance notes to the FLO's
Ian