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Long Range Hunting & Shooting
7mm Blaser Mag experience?
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<blockquote data-quote="gunnar andersen" data-source="post: 1350238" data-attributes="member: 99774"><p>I checked the reamer print against PTG and they are the same, as both are the CIP standard. One thing you might like to check is the the distance between the barrel lands Z. CIP 7.04 mm/0.2772 (JGS 6.88 mm/0.2710") Total Lead+Throat CIP 9.26 mm/0.3646", JGS calculation using the "tighter" barrel is about 15.2 mm/0.5983".</p><p>I did use a throat reamer and lengthen the Lead by 4 mm/0.1575 to seat 160gr NP to 83 mm/3.268". </p><p>I recently used the attached calculation (A Sharp NZlender) to determent lead length for freebore on another cartridge. Using the numbers from the reamer print, and it turned out very close. </p><p>I would like to have a tighter chamber, I believe they oversize the reamers so they can have one sharpening???, or it can be my FL die, even all are with in speck's. I look forward to hear how yours turns out. I have local machinist re-cambering and old 7x61 SH using another Blaser reamer also from (PTG)<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /> </p><p></p><p>[ATTACH=full]82158[/ATTACH]</p></blockquote><p></p>
[QUOTE="gunnar andersen, post: 1350238, member: 99774"] I checked the reamer print against PTG and they are the same, as both are the CIP standard. One thing you might like to check is the the distance between the barrel lands Z. CIP 7.04 mm/0.2772 (JGS 6.88 mm/0.2710") Total Lead+Throat CIP 9.26 mm/0.3646", JGS calculation using the "tighter" barrel is about 15.2 mm/0.5983". I did use a throat reamer and lengthen the Lead by 4 mm/0.1575 to seat 160gr NP to 83 mm/3.268". I recently used the attached calculation (A Sharp NZlender) to determent lead length for freebore on another cartridge. Using the numbers from the reamer print, and it turned out very close. I would like to have a tighter chamber, I believe they oversize the reamers so they can have one sharpening???, or it can be my FL die, even all are with in speck's. I look forward to hear how yours turns out. I have local machinist re-cambering and old 7x61 SH using another Blaser reamer also from (PTG):( [ATTACH=full]82158[/ATTACH] [/QUOTE]
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7mm Blaser Mag experience?
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