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Rifles, Reloading, Optics, Equipment
Reloading
Need advice on load development with new Peterson brass
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<blockquote data-quote="74honker" data-source="post: 2351386" data-attributes="member: 113930"><p>Surely someone with more experience will chime in here but here's mine with Peterson. I run it in a 7RM. It's great brass for many reasons imo. Very consistent. I already had a "pet" load for my gun with RP. At first like you I had some learning curve with Peterson. I first I tried my normal load to just to try and it was ugly, no pressure or anything, just wide spreads in velocity and my group was crap. I then downloaded 1 grain, better group but velocity was off. I took the 1x fired and tried again with my normal load and the group improved and I actually gained some speed over my normal. Tried it again and group bugholed as it used to with some extra velocity to boot with zero pressure signs. I now have 3x fire on them and velocity has settled back to single digit SDs and groups right back where they were with the RP. I do full length resize and also did so before the first firing when they were new. I think there may be a possibility of you may may have downloaded too far with dropping 3-4 grains. I have had issues with that in other calibers before while working up loads. It can do the same wierd stuff to brass as overpressure can.</p></blockquote><p></p>
[QUOTE="74honker, post: 2351386, member: 113930"] Surely someone with more experience will chime in here but here's mine with Peterson. I run it in a 7RM. It's great brass for many reasons imo. Very consistent. I already had a "pet" load for my gun with RP. At first like you I had some learning curve with Peterson. I first I tried my normal load to just to try and it was ugly, no pressure or anything, just wide spreads in velocity and my group was crap. I then downloaded 1 grain, better group but velocity was off. I took the 1x fired and tried again with my normal load and the group improved and I actually gained some speed over my normal. Tried it again and group bugholed as it used to with some extra velocity to boot with zero pressure signs. I now have 3x fire on them and velocity has settled back to single digit SDs and groups right back where they were with the RP. I do full length resize and also did so before the first firing when they were new. I think there may be a possibility of you may may have downloaded too far with dropping 3-4 grains. I have had issues with that in other calibers before while working up loads. It can do the same wierd stuff to brass as overpressure can. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Need advice on load development with new Peterson brass
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