What % do find exceptable to loss while cutting? i have been on a 1200 -1500 kcal aday.for seven weeks or so and am struggling to hang on strength whize.

Yep lol.
Why are you eating so few calories? You really shouldn't push such a deficit for too long. Stay around 500 under maintenance and be patient.
Generally on a cut I feel I lose energy more than strength myself. I don't really concern myself with percentages but I'm definitely tired quicker and lifting less. When I go back to maintenance or a bulk my energy levels come back within a few days and my strength is right where I left it in most cases.
In your case though, I would be concerned about genuinly losing strength along with muscle mass at such a deficit.
If I remember correctly, you have the thread about the modified 5x5. 5x5 is for strength gains, adaptable to strength and mass gains, both of which require a caloric surplus.
It can be used to cut, any caloric expenditure leads to weight loss but you are going to crash with this diet on the routine outlined in that thread.
Hi texas dame that 5x5 is bloody taxing!!!! i cant wait for my nutrition plan to be drawn up. but this refuction in kcals has worked but after last training i was hammered half way through. my macros are shot. 60/25/10 p.c.fats. So i know thats why i am tired and am sure i have lost both fat and muscle mass. tried to eat some carbs to day but am only on 115 grams but thats alot on this cut. tbh i dont want to lose my strength anymore so going to bring kcals back up .
Heavy weights, low reps helps maintain strength while cutting. Reduce volume, cut out any "fluff" movements if applicable.
I am going through the same thing right now. Although I am not cutting as drastically as you, doing 5-3-1 with the BBB template is not working for for me as some day I am just running out of gas. I am going to reduce my lifting from 4 days to 3 a week, and give Reverse Pyramid training a shot. You basically warm up, do a heavy set and then 1 more set at 10-15% less weight and move on to the next movement.
Cheers for ur concern but it works for me. but Agree my body has had enough. muscles r flatter strength has dropped 25lb s on most lifts and stalled on the others will alowly increace kcals to 2450 THAT will make alot of difference i am sure. then will up them again to 2900 after that . thanks for all ur concerns cheers. oh bf dropped quite alot though lol. but it has been noticed in the gym and heads have been scrached. wtf is he up to lol
This has the makings for a very period of metabolic recovery.
M.Ed. Ex Phys
Its good that you've taken advice on board and not bullishly pushed through the tiredness and other signals from your body. I only raise such concern, because I too have been through this, but instead of reversing the trend like you are doing, I continued with stims and suffered very badly. The two months after I crashed were the worst of my life!
M.Ed. Ex Phys