Thread: 6mm ARC

Originally Posted by Tentman

The final point is that like just about all cartridges we tend to see "the bright side" and with these small guys there is heaps of "my Grendel produces xxxx fps with xx" and we go "oh goody, that'll do me" only to find that my barrel simply won't go that fast, or people push the limits unknowingly putting themselves at risk (to achieve what other people have claimed). I've run 4-5 barrels with these cartidges and only one has produced "internet " velocities, and that with reduced brass life indicating that my pressures were "right up there".

It's much more sensible to
1 - be really realistic about what velocity is actually required and what benefit there is from more (not much)
2 - base velocity estimates for selecting a cartridge on a pretty conservative basis from book max data and not anecdote online


especially if you just take the sensible route and use more modern cartridges where book load data is of much more relevance and better quality than older data.