Originally Posted by clemens
shooting VLD's i would need to lengthen throat out correct with custom barrel? or just load them standard length due to factory chamber loosing case capacity do to short chamber? Does that effect there performance any?
Depends...with a custom barrel you have the option of a custom throat. As a result, you could throat it long but then you might not be able to fit cartridges into your mag well. For a long range run, typically this is not a problem as single loading is not a big deal.
With your factory barrel or a SAAMI spec custom chamber, you would seat the VLDs deeper into the case. This takes away some case capacity resulting in some loss of velocity.