cornfedkiller
WKR
To make a long post short and answer my basic question, I recently learned about ogive, and without buying more equipment, I'm curious if I can use simple math to figure out the OAL for a new rifle. I have been shooting a 143gr ELD-X out of my 6.5CM. The OAL on my last gun was limited by the short magazine, and I was running my bullets at a OAL of 2.8125". I got a new gun and was loading up some bullets and it made me curious about the OAL to get closer to the lands. I talked to the guy I bought the gun from and he told me he measured the lands at 2.24", and he was running his bullets at 2.22" base to ogive. He was running a different bullet than I am, so obviously the OAL will be different.
Now I know the numbers differ a little from batch to batch, there's some room for error, etc... but I did some google research and they say the 143gr ELD-X bullet has an overall length of 1.43", and base to ogive is .673", so that tells me that ogive to tip is .757". If the base to .02" off the lands is 2.22, does that mean my new OAL should be 2.977"? That seems really long, but that's why I'm wondering if that's right? If I make one that long and it feeds into the chamber without any resistance, am I good to go?
I know the true answer is to buy a bullet comparator, but I'm just trying to figure out if I can figure this out without buying more stuff.
Now I know the numbers differ a little from batch to batch, there's some room for error, etc... but I did some google research and they say the 143gr ELD-X bullet has an overall length of 1.43", and base to ogive is .673", so that tells me that ogive to tip is .757". If the base to .02" off the lands is 2.22, does that mean my new OAL should be 2.977"? That seems really long, but that's why I'm wondering if that's right? If I make one that long and it feeds into the chamber without any resistance, am I good to go?
I know the true answer is to buy a bullet comparator, but I'm just trying to figure out if I can figure this out without buying more stuff.