2740fps isn't anything to lose sleep over. That is plenty of speed for what you're wanting to accomplish. I've poked a few deer with somewhat lower velocity and as you said the deer won't know the difference, the oil light will still come on. If you can get or have some, try Winchester Stabal6.5...
My experience with 6.5x55 brass is that American made is usually under size than European such as Lapua or Norma. Than again chambers can be different as well. Case in point. My first 6.5x55 is a Mod 70 FWT. I bought Winchester brass when buying dies and bullets at the same store.All that was...
Good rifles and the 35REm is a favorite. Had a Mod336RC. Grouped great and carried it a few times but never poked a deer with it. Since I have a Rem 760 35Rem I liked better I traded the Marlin for something else. Just me.
Every now and then I get bored and move stuff around just to see what might be found. Usually dust and lost primers that were dropped on the floor finding their way under the loading bench:ROFLMAO:
Glad you're getting back into reloading. Another powder option for your 45acp is CFE Pistol. Have used it some with good results. It will get more use someday after my others run out. Let us know how these all work out for you.
Your dilemma reminded me of a fellow who was a member of the range I belong too. He was an older well experienced shooter who I liked very much. One day he showed up with a Sako barreled to 6.5-300Wby that was splitting cases at the neck almost every other shot. He had gotten it from a cousin...
Yes, it is factory, made in the 80s. Barrel is 22ins. IMR4350 with Nosler 120Bt,125Pt and Sierra 140GK. H4350 with Sierra 120Pro Hunter. H4831SC with Hornady 129SP. RL19 with Hornady 129SST, Nosler 120BT. RL22 with Sierra 140GK. This rifle seems to be powder specific to which bullet it likes...
Like you I had a Mod 77 in 257 Roberts and the only thing I got to group somewhat decent was a 75gr HP. It has been the only rifle I gave up on.
Those 140gr Game Kings do wonders on deer in my 6.5x55 Mod 70.