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Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing, groupings, and chambering issues
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<blockquote data-quote="Recon$$" data-source="post: 527949" data-attributes="member: 34122"><p>Okay so I have been working up a load for my .308 and have only fully sized the brass I have been shooting. (I have only been reloading a few weeks). I have shot a good .38 MOA group at 100 yards using 43 gr of rl-15 with 168 btips seated .02 off the lands. Since this is a hunting load and I am using a 20 inch tube, I am trying to get all the velocity I can within reason as long as it I am not sacrificing accuracy. My loads over 43 gr have had 1 moa to 1 1/2 moa accuracy till I hit 45.5 gr and it came back to just under 1 moa. My book is showing 44.8 as the max, but I inched up and have yet to see any pressure signs. This leads me to the questions I have.</p><p></p><p>*Note - I am shooting off a bipod with bags to eliminate my shooting as a factor as much as possible. All my groupings are very consistent. So my groupings don't have much to do with my shooting.</p><p></p><p>Have any of you guys experienced your groupings opening up as you increase the powder and then start to shrink as you find a higher powder amount your rifle likes?</p><p></p><p>So instead of using anymore powder to see if the group would shrink anymore ( I understand I most likely don't want to go much farther if any) I decided to to just neck size some Remington cases I had (was using winchester) and see if some fireformed brass would help close the groups. I sized them by just backing off my full length size die about 3/4 of a turn. So I backed off to 45.2 gr and loaded up some rounds exactly the same as I have been using. These rounds wont even chamber? If I don't add any powder and seat a bullet the round chambers fine? Whats the deal? Is this just to much powder for the Remington case and after seating the bullet its(powder) pushing the shoulder of the case enough to not chamber the round? I can't think of any other reason why. I ran out of time to try a lower powder amount or a neck sized Winchester round and wont get a chance for a few days. </p><p></p><p>Thanks in advance</p></blockquote><p></p>
[QUOTE="Recon$$, post: 527949, member: 34122"] Okay so I have been working up a load for my .308 and have only fully sized the brass I have been shooting. (I have only been reloading a few weeks). I have shot a good .38 MOA group at 100 yards using 43 gr of rl-15 with 168 btips seated .02 off the lands. Since this is a hunting load and I am using a 20 inch tube, I am trying to get all the velocity I can within reason as long as it I am not sacrificing accuracy. My loads over 43 gr have had 1 moa to 1 1/2 moa accuracy till I hit 45.5 gr and it came back to just under 1 moa. My book is showing 44.8 as the max, but I inched up and have yet to see any pressure signs. This leads me to the questions I have. *Note - I am shooting off a bipod with bags to eliminate my shooting as a factor as much as possible. All my groupings are very consistent. So my groupings don't have much to do with my shooting. Have any of you guys experienced your groupings opening up as you increase the powder and then start to shrink as you find a higher powder amount your rifle likes? So instead of using anymore powder to see if the group would shrink anymore ( I understand I most likely don't want to go much farther if any) I decided to to just neck size some Remington cases I had (was using winchester) and see if some fireformed brass would help close the groups. I sized them by just backing off my full length size die about 3/4 of a turn. So I backed off to 45.2 gr and loaded up some rounds exactly the same as I have been using. These rounds wont even chamber? If I don't add any powder and seat a bullet the round chambers fine? Whats the deal? Is this just to much powder for the Remington case and after seating the bullet its(powder) pushing the shoulder of the case enough to not chamber the round? I can't think of any other reason why. I ran out of time to try a lower powder amount or a neck sized Winchester round and wont get a chance for a few days. Thanks in advance [/QUOTE]
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Neck Sizing, groupings, and chambering issues
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