I have a 15" 25/35 Contender , had a 10" for years , and it is a very good round.It will shoot a 117RNSP 2200fps
85BT 2500+ ,shoots cast bullets good . it is not a 250 Savage but it is a good barrel 100BT's 2300 . A 25/35AI is a very good round but there is not a lot wrong with the std barrel either. IMR3031 gives the best velocity with most bullet weights. Ball C looks promising as does H4895 but have been too busy working with some of my other barrels to spend a lot of time with the 25/35 --plan to do that this summer. 11.0/4759/85pb cast shot good out of my 10" and killed bunnys like lighting. Speer 100HP worked fine of the deer I shot with them. The 117RN punched both shoulders and required a finishing shot --wasn't going anywhere but wasn't dead either.