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I'm sure that's part of it. Burning over 90 grains of powder at one time is going to cause erosion no matter the kind of powder used. mtmuleyIs there a sufficient volume difference such that the more you burn the more erosion that you should get?
I've used Vihtavuori in 2 rifles I found a couple pounds cheap at the start of 2020, I wasn't getting the velocities I wanted in the .308 but in the 6.5 I got good results. I've loaded a couple hundred rounds with the N550 haven't noticed any erosion problemsI've read some concerns that Vihtavuori powders can contribute to premature throat erosion. Anyone here used it for an extended period and have any thoughts? mtmuley
I'm no help for mtmuley either, but I'm curious if you've used N165? I also have read it's a very cool burning powder. It seems to be pretty popular in the 6mm AI crowd so I've considered trying it in mine. I've heard it can be temp sensitive, at least moreso than the typical IMR powders and especially the hodgdon extreme powders.The heat of explosion that I think folks are discussing here isnt a viht thing it’s individual powder specific. For example, N165 is a very cool burning powder but n570 is on the hot end of the spectrum.
RL33 is pretty close to n570 on the spectrum.
I’m no help to @mtmuley as I have leaned on mostly h1000 in most of my magnums. Retumbo is cooler burning too.
I'm no help for mtmuley either, but I'm curious if you've used N165? I also have read it's a very cool burning powder. It seems to be pretty popular in the 6mm AI crowd so I've considered trying it in mine. I've heard it can be temp sensitive, at least moreso than the typical IMR powders and especially the hodgdon extreme powders.
So burn rate must have nothing to do with the temp a powder burns then? I can guess the rounds through my RUM barrel. Be interesting to see what it looks like when the Smith pulls it off after a steady diet of RL-25. mtmuleyThe heat of explosion that I think folks are discussing here isnt a viht thing it’s individual powder specific. For example, N165 is a very cool burning powder but n570 is on the hot end of the spectrum.
RL33 is pretty close to n570 on the spectrum.
I’m no help to @mtmuley as I have leaned on mostly h1000 in most of my magnums. Retumbo is cooler burning too.
So burn rate must have nothing to do with the temp a powder burns then? I can guess the rounds through my RUM barrel. Be interesting to see what it looks like when the Smith pulls it off after a steady diet of RL-25. mtmuley