Originally Posted by Sully2
I use a bullet and a fired casing. Coat the bullet with a black marker....seat that bullet in the casing so that it holds tight and nothing more.
Chamber the round as best you can...and close and open the bolt ( not open the whole action...just the bolt) so that rifling marks appear on the marked black bullet.
Cant get the bullet out? Knock it out of the barrel with a clean out rod and start over...seating the bullet deeper this time. Re coat the bullet...etc...etc.
Once you have an OAL that works for you...crimp or ??..the bullet tightly into that case
Exactly how i do it, beyond that I then measure the dummy round with a hornady bullet comparator very VERY
carefully, then seat that bullet into a sized case to the dummy round dimensions, label it and set in my die box. the only down side is that you need a fired case first, but I'll just go get a box of the cheapest factory blammo I can find and fire off 1/2 of them.
Keep in mind the animals we shoot for food and display are not bullet proof. Contrary to popular belief, they bleed and die just like they did a hundred years ago. Being competent with a given rifle is far more important than impressive ballistics and poor shootability. High velocity misses never put a steak in the freezer.