Out of my rifle working upto 24.5 of Varget should work with a 25 gr. Hornady.
Other loads I have shot with a 25 gr. Hornady HP are:
1. 25 grs to 26 gr. of CFE223 AVG VEL 3885FPS
2. 25GR. VARGET AVG VEL 3874
3. 23 GR. H4895 AVG VEL 3931
4. 24 GR BLC2 AVG VEL 3952
4 26GR H414 AVG VEL 3780
Other powders you may try : RL15, IMR4320, H322,
All loads were safe in my rifle, your mileage may vary. Work up slow in the .17Rem.
Only primer used was a Remington 7 1/2.
CLOA was longer than books shown in manuals but not into the rifling.
Enjoy your .17 Remington, load and shoot it enough and you will fall in love.