I used 27, 28, 29, and 29.5 grains of IMR4895 and got under an inch groups at 50 yards with all and 5/8" with 28.0 and 29.0 grains.
For H335 I used 28, 29, 29.5 and 30 grains and also got all groups under an inch. Best groups of 7/8" with 28.0 or 29.0. I only had four of the 30 grain loaded up and managed to pull one but I did get a 1/2" group with the three. I'd go with the 29.o grain load for this powder.
All the above were with winchester brass and winchester primers with an OAL of 2.53.
Interestedly enough, I had a dozen 110G Frontier CMJ bullets loaded over 35.2g of WC735 in my box, (my 30-30 practice round) and I got a 2.5" group with it the same day.
The 110 CMJ's are a lot cheaper but the FTX shoot quite nicely.