I’m not as subtle as
@Klenchblaize - I’ll give you £150 for the 6-24x56 Diavari
To answer your original question, I’ve done exactly what you’re enquiring about this doe season. I took a 6-24x56 Diavari off my 6.5 & mounted an Alpex 4K LRF.
Fair to say I’ve now shot a good few deer with this set up & whilst there have been a few deer I’ve shot that I’m 100% certain I wouldn’t have shot with the Diavari it’s not a significant proportion of the total but it has increased my cull figures noticeably. And I have shot deer very late on with the Zeiss this winter too but you are shooting at silhouttes & need to be confident with the angle the deer is stood at, where the aiming area needs to be & where your aiming mark is - the beauty of the Zeiss is the little red dot in the middle
My findings have been that in woodland the image quality due to low light (not using an IR as that’d be illegal for deer) has been so poor that I don’t think there’s any advantage using the Alpex over the Zeiss.
On open ground, such as from a highseat on the edge of a wood looking across fields, there is an advantage & this becomes even greater when it’s a clear night with no cloud cover. I’ve deliberately sat out past the end of the hour after sunset & could readily have shot deer out to 200 yards with the Alpex. Last weekend I shot a fallow at 209 yards 45 mins after sunset & the picture was still in colour as it hadn’t needed to switch to night mode yet due to available light.
I have also shot deer in the morning when I’ve literally been looking at the time in the scope waiting for the hour before sunrise to kick in!
What I have learned is that there are some limitations to the Alpex that put it a long way behind the Zeiss in certain conditions.
Typically with the Zeiss I am happy to shoot until about 40 mins into the last hour & possibly later depending on circumstances - I will mentally reduce my shooting distance as it gets darker as well as dropping out smaller quarry. So, for example, I’m happy to shoot a Muntjac at 200 yards in daylight but as it gets darker I’ll drop that to 100 yards & then not at all - while at the same time I might be happy to shoot a fallow at 100 yards if that all makes sense.
I keep the Zeiss on 8x as that gives a 7mm exit pupil, increasing it to 12x for the muntie at 200 yards or even up to 24x for a fallow at 300 yards, etc.
With the Alpex I have learned the hard way that I can’t adopt the same approach when using it.
In low light I leave it on 3.5x & keep ranges to around 100 yards. The rest of the time I have it on 7x as higher than that I cannot rely 100% on the ‘zero’ due to the way it interpolates the data from the sensor & displays it in the screen.
I’ll be up front & say I have had 3 instances that I would rather not repeat & which have been a very valuable aid in learning how to use the Alpex effectively & humanely. By mentioning them I hope it helps others avoid similar or worse happening - anyone who wants to slag me off or claim I shouldn’t be shooting if I can’t kill them can FRO as my old boss used to say - we can all learn by others mistakes & none of us are too old to learn!
The first incident was one morning when after shooting a pricket on a ride at very dark o’clock using 3.5x I saw a muntie in daylight, pinged it with the LRF & the ballistic calc gave me a distance of 225 yards & a second aiming mark to use. I wound the mag up to 28x, settled the ‘X’ & squeezed. The muntie jumped as expected & shot into cover - great I thought it’ll be dead just inside the wood. Got there & not a sign of it, found the shot site & small amount of cut hair, no skin, no blood, no bone. Fetched the dog from the car, he found the shot site but nothing to follow. Watched the video back & everything as expected. Conclusion was the bullet had gone just under where the cross was showing in the image.
Second instance was a fallow doe one morning after sunrise, pinged with the LRF at 278 yards, wound the mag up to 28x then popped the ‘X’ just up behind the front leg & squeezed. Doe reared up on back legs spun around & charged off down the field with front end dropping & then ploughed into the ground. A little bit surprised at the shot reaction as it suggested a low heart shot but the doe was down so all good. Except it wasn’t, her neck came up & head was moving then she stood up, I didn’t have a good shot & was contemplating a Texas heart shot just to stop her… then she collapsed again & sat back up. Pinged her with the LRF & took a head/neck shot which connected. When I recovered her the first shot had been a very low chest shot. I was lucky with that one - there was a good hole both sides but not an immediately fatal wound & I could very easily have spent the rest of the day looking for a very mobile doe. Watched the video back & no issue about the X not being in the right place.
The third instance was another fallow doe one evening just after sunset, pinged at 264 yards, magnification up to 28x, ‘X’ just in behind the leg & squeeze. Doe jumped up & ran in a turn towards me up the field, reaction would suggest a heart shot but then she didn’t fall over. Instead she stopped & looked back to where she’d been when I shot her. She turned more quarter on to me so worried she’d run again & clearly wasn’t hit well with the first shot I put another shot into the shoulder & she dropped on the spot. It was dark by the time I’d recovered her but when I did the gralloch there was only one shot in her & that was the second one in the shoulder. My first shot had been a clean miss - but once again watching the video the X was in the right place.
My initial thought was that the ballistic calculator was out so I took some drop readings at various ranges using the LRF & then cross checked against real world data & they were as close as sh1t is to swearing, so it wasn’t that.
Thinking more about each scenario a common factor appeared - using high mag at longer ranges. After an exchange of posts with
@mealiejimmy about how the LRF box disappeared as I zoomed I understood more about what was happening & how the display works.
I now limit magnification to 7x & have not had a miss or low shot since.
I’ve also taken to using the LRF to put a second aiming mark up by pinging objects at 200 yards. This gives me flexibility & confidence in taking shots at varying distances without needing to use the LRF first - my Zeiss is zeroed at 200 yards so I instinctively know what’s on & what’s not range wise. But being able to ping after the first shot & quickly get an aiming mark for a second shot is a real bonus.
After the doe season has ended I’m going to do some testing to see if I can get useable ‘tolerance’ with the scope at 14x. But, this will be on paper & not deer!!
Meantime the Alpex will stay on the 6.5 & will be used to help maximise this seasons fallow doe cull.
I’ll probably use the 308 with the Zeiss on it to cull roe does in February, & any fallow that happen to be around at the same time of course. Muntjac will get shot with either combo but within what I now appreciate are the limitations of the Alpex.
Sorry this has been a VERY long post but hope it’s helpful to the OP & to others
Would I buy an Alpex again? - yes.