I have Fired both in my 1895G, Accuracy was about the same for each, 1 1/2 " at 90 yds from a rest with open sights. Recoils is less with the 250's but not a great deal less.
For White tail deer at practical 45-70 ranges, I didn't see any great difference in killing power either. Both were amply sufficient, and quite effective. 3 deer with the 325's and 2 with 250's, all at less than 100 yds. 1 Shoulder shot(inadvertent) with a 325, and 4 lung shots. None of the deer went more than 15 yds after being shot, and 2 dropped immediately, 1 with a 325, and one with a 250.
Recovered only 1 bullet, a 250 that was about 65 caliber in diameter, the others went through.I plan to try the 325 on a hog this year.