| 400NitroExpress |
| (.400 member) |
| 25/10/09 05:11 AM |
Re: OSR, Double Damage and Barnes' Response
|
Quote:
Did you check neck relief {OD of loaded rounds} and chamber length, OAL and land origin? Is it posible the bullets were pressed into the rifling before firing?
Yes. All that was done before the rifle was ever fired with anything. Min chamber/max cartridge neck dimensions are especially important in doubles, because most all of them made before the late '70s were cut for the original Cordite ammunition, which usually had very thin brass in the necks. With today's heavier brass, a tight fit is not uncommon, so it's crucial to check it. The bullets were seated off the rifling, as I've found doubles typically regulate better that way.
Quote:
Also, are you certain chambers were concentric and not cocked or seated bullets misaligned in some way that the bullets were presented to the leade in misalignement with it?
Quite certain.