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Rifles, Reloading, Optics, Equipment
Reloading
Does switching primers affect grouping?
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<blockquote data-quote="Buttermilk" data-source="post: 1082794" data-attributes="member: 5262"><p>In a 7RM rifle I loaded 65.0 gr H4831sc and pushed a Nosler 140 AB. Not a max load. </p><p></p><p>Primer was a F215GMM I initially. Group size was just right at 1.25" for three shots at 100.</p><p></p><p>I then used the same load but switched to a std F210GMM primer. </p><p></p><p>Group size went to 0.600" but I lost about 40 fps.</p></blockquote><p></p>
[QUOTE="Buttermilk, post: 1082794, member: 5262"] In a 7RM rifle I loaded 65.0 gr H4831sc and pushed a Nosler 140 AB. Not a max load. Primer was a F215GMM I initially. Group size was just right at 1.25" for three shots at 100. I then used the same load but switched to a std F210GMM primer. Group size went to 0.600" but I lost about 40 fps. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Does switching primers affect grouping?
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