How to determine correct impact velocity for WFNGC designs ?

[shortlegs]

A friend made a high shoulder shot at around 75 yds on a 300 lb hog with a 255 gr lee that I loaded for him. Velocity was 1338 if I remember correctly. Hog dropped at the shot and never moved. He said boolit went through both shoulders and kept going.

[taco650]

I'm sure much of this depends on caliber / alloy / intended range & game . Let me state what I wish to do & let you gents tell me what you think about how to get there . My primary game is feral hogs in medium to heavy cover @ max 100yds , majority will probably be shorter . Calibers will be 357 mag , 357 Max , 41 mag & 44 mag . With the exception of the 41 rest are T/C Encores with MGM 20" barrels , 41 is a Henry BBS . Twist rates are 1 in 16" for both 357's , 1 in 18.75" for the 41 & 1 in 20" for the 44 . I want pass thru & be able to take shoulder shots as crawling thru the bushes after a wounded hog aint on my bucket list . Alloy to start is ACWW.
1) 357 mag with LBT / NOE 180 WFNGC from a 20" barrel 1700 to 1800fps is possible & this bullet should work well at that speed I believe . I'm probably harder alloywise than I need but until I've gained experience with this load I can see going softer won't hurt within reason .
2) 357 Max with same 180 from a 20" wow 2200 is possible but I believe might be too much with this bullet . Am seriously considering a 200 to keep velocity down some . With the 180 might be better served with a little faster or slower powder choice to also keep speed in check hmmm .
3) 41 mag also from a 20" . Levergun so I went with a LBT 240 LFNGC & I also have some 240 WFNGC ( if they'll chamber ? ) The LFN chambers & feeds . I believe 1700 is doable & both bullets should work at that speed .
4) 44 mag with LBT 260 WFNGC out a 20" I believe 1700fps is possible , but is that too fast ? Would 1500 work better ? If so again would it be better to use a faster like Enforcer or a case full of slower like 1680 , RL7 etc. ?
Maybe I'm overthinking all this but with cast sometimes slower kills faster . Jacketed just the opposite if you match bullet to game intended .

Sounds like you've got plenty of good loads already. Use whichever is the most accurate and get hunting!

[WinchesterM1]

With a WFN I would say velocity should be moving lol those things are killers!!