http://garage.grumpysperformance.com/index.php?threads/new-reloading-manuals.2379/#post-59757
if you have not yet done so..
invest in 4-6 good reloading manuals,
and yeah ever few 5-7 years youll need a new updated manual,
as new cartridges and powders are introduced and old powders discontinued
I only owned one 220 swift rifle, and only for a few months before a buddy offered me a swap for a 338, win Winchester mod 70 (I never even got to fire that rifle....
I had got that 220 swift rifle a browning single shot, 220 swift in a trade,
that looked similar to this
and its one of several rifles which I really regret ever swapping.
be sure you check data,
but if I remember correctly it liked
39 grains of ww760 and a fed primer,
under
a 55 grain speer bullet
with that load 1" 5 shot hundred yard groups were easy off a solid bench and sand bags
https://www.speer-ammo.com/products/bullets/rifle-bullets/varmint-soft-point-bullets/4711
btw I swapped that 338 winchester rifle,
the next day with a different guy for a almost new remington 700 458 mag,
as he found he could not tolerate the recoil
it came with a box of 20 cartridges with only 9 fired cases
what he failed to understand was you did not need to load 458 mag cartridges,
to the full potential of a 500 grain bullet at 2100 fps
as were factory ammo loaded.
that 458 remington rifles been on several deer and elk hunts ,
but its used with marginally reduced hand loads
it works , and has worked well for decades ,
its great for elk with a 405 grain at 1800 fps
this basically duplicates a 450 marlin power level thats proven to be devastating on elk and deer