I have had GREAT results with the 125 TNT speer bullet with Reloader 7.
when i was testing these for my 26" encore i may have just got lucky but
i had good results from 748,3031,2520,4064 also.
I loaded 3 shells with each grain wgt and increased the charge of each 3
in my test.
my gun loves the 125 TNT and 30.5 Reloader 7 @ 2580fps over my chroney
also as i said i may have just got lucky but the 3 shots with 30.5 R7 was only 3fps
high and 3 low for 6 fps dif in three shots.
I NEVER had this close of a spread before.
But I neck turned the rem cases,debured the flash holes,used primer pocket reamer,
and all was trimmed to the same length and scaled powder charges for my test.
but as many already know Reloader 7 meters like a dream.
Also the Sierra 125 fphp worked well in the win and marlin lever actions with 29.5 of Reloader 7