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Rifles, Reloading, Optics, Equipment
Reloading
Decreasing bullet runout during bullet seating
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<blockquote data-quote="B-P-UU" data-source="post: 918740" data-attributes="member: 29114"><p>Mike, </p><p>Conceptually this makes sense, but I have a few questions. </p><p>- Since my collet-sized neck runout is similar to my neck runout with a bullet seated, are you implying the bullet jacket is deforming (since the variance is not pushed to the OD)?</p><p>- I see there are 2 types of Sinclair expander mandrels for the expander die; do you reccomend the 'neck turning tool mandrel' (.002" under caliber) or 'expander mandrels' (.001" under caliber)?</p><p> </p><p> </p><p>I actually shot some of the reloads this weekend and put them into 2 categories; runout from .001 to .003 and runout from .004 to .006. Both 5 shot groups shot similar POI and similar accuracy (100 YDS). The loads with less runout were slightly more accurate and the higher runout group had 1 flier (considering the shooting conditions of -15 air temp plus windchill, the flier could have been shooter error). The 5-shot group with lower runout shot just over 0.5 MOA. While I would like to have them all in the same hole, I am satisfied with the results.</p></blockquote><p></p>
[QUOTE="B-P-UU, post: 918740, member: 29114"] Mike, Conceptually this makes sense, but I have a few questions. - Since my collet-sized neck runout is similar to my neck runout with a bullet seated, are you implying the bullet jacket is deforming (since the variance is not pushed to the OD)? - I see there are 2 types of Sinclair expander mandrels for the expander die; do you reccomend the 'neck turning tool mandrel' (.002" under caliber) or 'expander mandrels' (.001" under caliber)? I actually shot some of the reloads this weekend and put them into 2 categories; runout from .001 to .003 and runout from .004 to .006. Both 5 shot groups shot similar POI and similar accuracy (100 YDS). The loads with less runout were slightly more accurate and the higher runout group had 1 flier (considering the shooting conditions of -15 air temp plus windchill, the flier could have been shooter error). The 5-shot group with lower runout shot just over 0.5 MOA. While I would like to have them all in the same hole, I am satisfied with the results. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Decreasing bullet runout during bullet seating
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