tarnagulla wrote:Then - how about bore diameter v. groove diameter? Calibres described by year of introduction (.30-06 comes to mind - slightly different from its predecessor, the .30-03)?
Lorgar wrote:It couldn't have been that hard for everyone to have a quick chat when they were naming these things, lol.
agentzero wrote:I'm not much of a historian, but I assume many cartridges were probably developed during war times by difference countries?
I don't imagine you just pop over to Russia or wherever in the middle of a war for a quick chat about rifle cartridges, lol.
inspector wrote:Excuses, excuses...
Joom wrote:Unless America adopts the metric system, I'm going to say no.
Warrigul wrote:Joom wrote:Unless America adopts the metric system, I'm going to say no.
I think they already have officially, it just hasn't stuck...
teedo wrote:What was the reason they changed to 10th of inches then? Must be something?
Hardcast wrote:No problems if you're an Engineer, and educated in such things, but where I went to school, or at least where poor old mum and dad thought i went, we learnt (or is that lernded), 1/32, 1/16, 1/8, 3/32, 1/4, 5/32, 3/16, 1/2 inch etc, I don't remember the ruler having .001" or 1/10" on it., then came Metric !!
Noisydad wrote:The U.S. HAS adopted the metric system...they use the 9mm round!
Don10 wrote:The good thing about standards is that there are a lot to choose from.
Noisydad wrote:Listen carefully to older builders and you'll hear them using hybrid measurments metric AND imperial in the same measurement! Scary thing is I can understand them!
Warrigul wrote:not very neat or efficient at times though.