180 gr Norma Bonstrike 300 win mag .

I have been given 20 of the above to try .
So, 20 projectiles isn,t really enough to run up loads to find a good load . So i am after someone elses load to try .
I do have a good 185 and 210 berger load , and a reasonable 178 eldx , but no 180 grain loads for the 300 win mag . I shoot a 7mm prc so i I have h1000 , H4831sc ADI 2217, ADI 2208 + 2209 , rl 22 , rl 19 , viv 160 + 540 ,
But i dont have any Norma MRP which i understand is the right powder ( got loads for that ) for the bonstrike .
for info , my 300 is a SAKO A7 at 23.5 inch barrell , lapua brass at 92.5 grain Volume , federal mag primers .
You are going to have to trust me , to not be a fool on this matter.
Now i have been around long enough to take your best Bonstrike load and run it through Gordens and XXL and If it goes well in yours , its likely to go fine in mine
so what you got ?
cheers
les