My misses were at 70m. Prone at 100m I was fine. My headshots at 10-25m were also fine. I shot low on one shot of 70m on each of my two tries, about 15-20mm out. One of them, I was actually only meant to be taking up the 1st stage of his 2 stage trigger, but with only a 1lb final pull it went off when I wasn't ready. Only second time shooting a rifle though so I'll be fine next time.
I'd suggest more practice. As it happens I used Chris Howards rifle, back in the day when I did mine on the old course of fire. At Wadhurst Park with the BDS.
Intended to use my 308, but back then, on a target condition only, so could not legally possess expanding/deer legal ammunition in those days. After some discussion with them, decided the simplest thing was to use the "club rifle", i.e. Chris's personal one, an RPA in 243, with his ammunition (his own reloads it turned out).
It didn't fit me at all, totally right handed thumbhole stock too long for me (I am a lefty) and the scope set up for shooting standing, far too close when prone. He is also at least a foot taller than me. Nevertheless, I adjusted to it, club shooting sharing all sorts of other members rifles teaches you that and makes you adaptable.
First thing I did was to try to get comfortable. Then asked to dry-fire it to feel the trigger. After two dry fires I had it sussed (he does set them light).
Back then the course of fire was three prone at a 100yard zeroing target into IIRC 3", a low barrier. Surprising how many couldn't manage that with their own rifles and ammo. Poor preparation. Then three prone at 100 yards, sitting or sticks at 75, standing or sitting off short sticks at 50. IIRC
I was, OK, an experienced target shooter also with some prior field experience, mostly on vermin, but also already five deer (paid stalks BTW).
I thought it was easy-peasy, everything into less than 2" of the centre of the non-delineated kill zone. Easy enough to place, line up vertical crosshair with rear of foreleg, horizontal crosshair halfway up body.
Surprised how many struggled, even failed after two or three goes you could try as many times as you liked back then, but on my course they stopped at three tries
My practices on quad sticks were fine, but I was the greenest shooter on the rifles so Chris said to go sitting for the 70. Sitting made every breath affect my aim wildly.
Then you need to practice more in field positions. Sitting and kneeling. standing. Particularly breath control, which is an essential skill for any sort of rifle shooting.
My practice with a mates rifle, we simulated the DSC1 test and all went fine.
A few of us also found the target much easier to see first time round. For a second attempt, he staples on an a4 insert to cover your precious shot holes. The newer sheet was glossy paper and made it awful to aim at.
That does not sound correct. The DSC1 shooting assessment must be taken using the official DMQ roe target, copyright. You can buy them from the BDS. The main target can be patched up over the misses (BDS can sell you a roll of patches too). The target zones take inserts, which you can also buy, these should fit behind the main target, and be aligned with the aperture where they are designed to fit, using the faint line printed on them. These inserts are readily photo-copyable for practice, and matte black, same as the overall target. Without a high powered scope you should not be able to see the join.
At least in my day, the targets had to be returned to DMQ for independent validation before a pass was officially declared .Same with the multiple choice papers. The simulated stalk I suppose was down to the examiners. No funny business allowed. OK you might be unofficially told, on the day, that you have passed DSC1, but until you receive the certificate, or a list of what parts you have, and which you have not passed, so need to re-sit, you don't know.
There was someone who designed a reduced sized target to practice with using e.g. an air rifle in the back garden, a pdf file to print on A4 or A3, but I can't find a link anymore. Probably broke copyright also. Probably quite useful for practice with e.g. a spring air rifle at 25 yards, or a rimfire at 50. You could probably design such a thing for yourself, given an official target to copy from.
Fundamentals: To shoot a deer (or other quarry) which do not come with a convenient hi-vis aiming point, you need to be able to identify a suitable aiming point purely based on the body shape, and be confident of being able to place your bullet into it, or near enough, every time.
The DSC! shooting assessment is ISTM a good controlled test, but IMO just a start. If you can't do it you shouldn't be trying to shoot quarry with a rifle (any sort really) yet. Nowadays you are allowed two attempts. Yes conditions might vary, from perfect conditions to rain to wind etc. it should be done in good light, but starting at 100 metres should not be an issue. If you haven't managed it by the second try, you are sent away to come back another day, when you are better prepared. That seems about right to me.
So by that target, and the JH’s comments on his shot placement - I’d still bet it would be a dead clean shot roe within the red.
I am guessing that you have not taken a formal shooting assessment. Nor maybe been trained, or at least prepared yourself for assessment only. perhaps you should even if you never intend to be examined. You can buy the DSC1 manual from the BDS to study. Old dogs, new tricks ?
My concern is that you get over enthusiastic people doing the tests looking to fail people.
I really think that is not the case, the opposite in fact. The trainers, and examiners would like you to succeed. However, if you aren't good enough, they must fail you. No arbitrariness should happen.
Any proper course and examination should result in a proportion of fails. Otherwise it is of little value, even to the attendee. Might as well just be an attendance course where everyone passes and gets a certificate.