My Heavy barrel will take higher pressures than standard barrels
Gundigest...
That's a new one for me

......care to explain it?
There isnt but one way to really know the velocity of a given load in a particular firearm and that is to chronograpgh them.
Plain and Simple. You can take all the loading manuals/ballistic charts etc that were ever written and the only thing they will do is give a rough idea. There are way to many variables in the mix...barrels, chambers, powder lots, weather condtions etc. that have a part in velocites/pressure. Without chronograpghing, it's merely a guessing game, even with ballistic charts.
This kinda reminds me of the guy that said a hog he shot weighed 400 lbs, when asked what scale he used, he responded he didnt weigh it but it felt like it was heavy as 400 lbs.
I have been in this game for a long time, the reloading companies have researched and have spent 100's of thousands of dollars to compile safe loads. I would think they know about safe limits. There will always be that crowd that says...whos cares about what brand x company says, I am loading ____ more grains of powder and I dont have pressure signs....BS. Again, without taking pressure readings of your loads you are only "guessing" at it. It's your arm,eyes,fingers, life though.
By the way, would not a little heavier bullet(BC good) have the advantage over a 40 grain (BC bad), sometimes faster MV's with low bc's will fall behind a bullet of higher bc that starts with a lower M V?
doubleA