Another important factor is the chamber, the more modern "Norma" chamber is designed for long actions and a COL of 82mm. The older chamber will have a heck of a lot less freebore and show pressure sooner/generally produce less velocity
Another important factor is the chamber, the more modern "Norma" chamber is designed for long actions and a COL of 82mm. The older chamber will have a heck of a lot less freebore and show pressure sooner/generally produce less velocity
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