Random search on the internet returned this table.
age/months weight/kg
1 4 - 7
2 13 - 19
3 18 - 32
4 25 - 60
5 35 - 64
6 40 - 94
7 42 - 99
8 44 - 104
9 45 - 110
10 46 - 115
11 48 - 120
12 Male: 50 - 125 (normally 50 – 70)
Female: 40 - 100 (normally 40 – 60)
Beware: I don't think the upper limits are sensible (100 kg at 9 months age is not a healthy weight for any kind of dog, not even very big ones. The lower limits and the normal range given at 1 year seem plausible, though.).
Wikipedia about Ovcharkas gives the usual weight range at 45 - 70 kg.
I have a Greater Swiss Mountain Dog, they are slightly smaller. Other than that, I'd think their growth is quite similar.
Here's a table of the recommended* weight range (by the breeder's association) during the first year:
age/months weight/kg
1 3.6 - 5.0
2 8.5 - 11.4
3 14.4 - 19.2
4 20.3 - 27.0
5 23.4 - 31.2
6 27.9 - 37.2
7 30.6 - 40.8
8 32.0 - 42.6
9 33.0 - 43.8
10 35.0 - 46.8
11 37.0 - 49.2
12 39.6 - 52.8
My male weighed
- 410 g at birth,
- about 11 kg when I took him at 11 weeks age,
- 40 kg at IIRC 9 months (when he reached about full height),
- and in the end levelled out somewhere around 52 kg.
He grew noticeably wider and more muscular until about 3.
* recommended means that they'll feed like a vaccum cleaner in their first year if you let them, but it's better in particular for joint health if your restrict their growth rate (so I can well imagine how the huge upper limits in the other table come to happen). The breeder said it doesn't affect their final size, it's more about growing a bit more slowly.