Sellier and Bellot (S&B) produce new 6.5 x 55mm ammo in both military specification and soft pointed hunting loads. The mil-spec bullet is 140 gn and the hunting soft point is 131 gn. I have not found a hand load that shoots better than the S&B factory loads from my #3 (unservicable I think they said for the #3 barrel) barrel M38, which puts three into less than 1/2" at 150 yds.
I gave my sporterized 6.5X55 Swede to the SIL. I had received it as a retirement gift. Along with it came reloads with the 120-grain Remington PSP Core-Lokt, and the 140-grain Nosler Partition. Both loads were accurate but when came to deer hunting I stuck with the 140-grain Nosler. After first round slam dunk on a buck the Partition was my goto deer bullet.
I also tried two loads afterwards with buik 140-grain PSP Core-Lokt. I developed good loads using Winchester Magnum Rifle Powder and H4831. I should note my barrel had been cut to 23".
When I passed on the Swede I obtained a 6.5 Remington Magnum built on a long action and sporting a 26-inch barrel. The long barrel on the 6.5 Remington; 26-inches and higher operating pressures gain me over 500 fps. The 6.5 Remington likes the 140-grain CL.
The down side to the 6.5 Remington is the lack of brass. In the brass department I found the 6.5 Swede to be a winner. I was able to find a few bags of 6.5 Swede Winchester brass and found some reloaded able imported ammunition.
There is a learning process to effectively using a gps. Do not throw your compass and map away!
Boycott: San Francisco, L.A., Oakland, and City of Sacramento, CA.
Decades ago I had good luck with 140ish but settled on 129 Hornady(?) for my purposes (no truly long range shots as I had open sights and a lot of woods). Everything really shot well, it came down to what did I 'need' to bag a WI White Tail.