we need more info is it a full wadcutter?
semi wadcutter
round nose ?
it makes a difference in some a very small diference
you should be able to use any data for a similar shaped bullet close to that rate range
as you are only looking for a target load
so you could use any data (Start data) from a 120g to a 150g and work up to a accurate load in your gun.
have you checked out
ht tp://data.hodgdon.com/main_menu.asp put in your info and out pops
125 GR. CAST LRNFP Winchester powder 231 .358" length1.445" 3.8g 876fps 10,300CUP 4.8g 1071fps 16,900 CUP
135 GR. CAST LRNFP Winchester powder 231 .358" length1.418" 3.7g 872fps 12.500 CUP 4.7g 1024fps 17,000 CUP
from the above data if you are using a rnfp or a swc in the 125to 135g weight I would start at 3.8 g
note work up to what your gun likes
and read your reloading manual