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Long Range Hunting & Shooting
How do you decide on an improved cartridge?
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<blockquote data-quote="cjuve" data-source="post: 1512433" data-attributes="member: 31341"><p>I am currently in the process of putting together an improved version of the 300 Norma for myself, by no means am I an expert and I am sure that others will have more to add. </p><p> In order to tell if the reamer has the ability to be chambered to shoot factory rounds you need to compare the sammi print and the improved print and compare the outside dimensions at the shoulder, length at the shoulder,lengths at the neck shoulder junction, neck diameter and free bore lengths. Things that could keep you from shooting factory ammo are if the shoulder has been moved forward and the neck length shortened. The free bore has been shortened where you can't chamber the factory rounds, the neck diameter is tight. There are definitely versions out there that it would be best to neck up and create a false shoulder to fire form. </p><p></p><p></p><p> Also, when the rifle is chambered it is a good idea to have the factory brass that you plan to shoot with the smith so that he can make sure that the fit is correct. </p><p> </p><p>One of the best things you can do is talk to a good gunsmith and to the guy that is building the reamer. Dave Manson has been great for me to talk to.</p></blockquote><p></p>
[QUOTE="cjuve, post: 1512433, member: 31341"] I am currently in the process of putting together an improved version of the 300 Norma for myself, by no means am I an expert and I am sure that others will have more to add. In order to tell if the reamer has the ability to be chambered to shoot factory rounds you need to compare the sammi print and the improved print and compare the outside dimensions at the shoulder, length at the shoulder,lengths at the neck shoulder junction, neck diameter and free bore lengths. Things that could keep you from shooting factory ammo are if the shoulder has been moved forward and the neck length shortened. The free bore has been shortened where you can't chamber the factory rounds, the neck diameter is tight. There are definitely versions out there that it would be best to neck up and create a false shoulder to fire form. Also, when the rifle is chambered it is a good idea to have the factory brass that you plan to shoot with the smith so that he can make sure that the fit is correct. One of the best things you can do is talk to a good gunsmith and to the guy that is building the reamer. Dave Manson has been great for me to talk to. [/QUOTE]
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How do you decide on an improved cartridge?
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