I had a chat with a mate recently about the need for more than one or maybe two chambering for use on deer in the UK and this was basically my opinion on it....
I've owned rifles from Sako, Tikka, Remington, Mannlicher, Krico, Borden as well as some custom rifles in factory donor actions. I've had them chambered in .222, .22-250, .243, .243AI, .25-06, .270, 6.5x284, 6.5x47 Lapua, .308 and .300WSM. With them where legal (obviously....) I've mainly shot sika and roe, a few red a few fallow and a handful of muntjac.
So, after all the above chopping and changing and now a bit more wise (just a wee bit) I have settled on the following to use for anything deer wise in the UK. A custom built Borden in 6.5x47 Lapua using only 120grn BT Nosler and a .25-06 using nothing except 115grn Nosler Partition (if they are accurate). (although the photo is actually a factory Sako 117grn Gamehead as not loaded any for this particular rifle yet and it is very accurate in the rifle).
I know some may say there is a bit of overlap here and maybe there is, but both can be used for anything here. The 6.5 is only pushing them at around 2750fps. Its isn't fast but it's incredibly accurate. I have shot roe with it, some muntjac and a good sized red stag. Not shot any sika with it yet but I will as well as fallow. The damage the 120grn BT causes is minimalist, because it isn't blowing up at silly speeds and is a joy to shoot. The 115grn Partition is a round I'd use on anything in the UK, regardless of it's size. It is developing more energy than the 6.5 and if we bare in mind that 99.999% of the deer we shoot are under 200yds it is dumping a fair amount of that energy in the beast even at that distance.
The .25-06 is a Sako 75 Stainless Synthetic with a 8x56 Swarovski that is primarily a rifle for guests to use. The 6.5x47 is my rifle for when I get out stalking and has a Zeiss V8 1.8-14x50 on it. The 25-06 is my 'working rifle' in other words and would also come out if it's going to be an abusive day on the gear and me! Plus it is handy having a back up if one fails and clients need to borrow one. That is all I need.
I have a .308 Custom Remmy that I am selling as it sits in the cupboard since being built and will only get used IF I get a shot at boar. So, I'll get a cheap one for that nearer the time.
A lot of what is written on here and especially in the shooting press almost has us believe we NEED a shed load of rifles in different chambering with a plethora of bullets otherwise we simply cannot do a decent job shooting deer. What a great marketing ploy and a load of garbage. Folk new to the sport must feel like they are walking through a maze.....
I admit I don't shoot many foxes and hardly ever get out lamping nowadays but when I do I would happily use one of the rifles I own with the bullets I have loaded for them. Why would I give myself the headache of developing another load just for the odd fox???? (as I said, this is about deer rifles and chamberings)
So, that's my tuppence worth and relevant until I fancy something else......