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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
280 Ackley Improved question
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<blockquote data-quote="cowboy" data-source="post: 572864" data-attributes="member: 8833"><p>You said you had a 1-9" twist in your barrel. In my opinion you are just starting to take advantage of the twist with the 162 gr Amax and should very easily stabilize up to and including the 180 gr Berger's. I and my son both shoot this cal. in a 1--10" twist barrels and are using the 168 VLD Berger with great results. If you want to shoot the lighter grain bullets I would think you would have been better off going with a slower twist than 1-9". </p><p></p><p>As far as the Hogdon powders being more temp. stabilized then say the RL powders. I think a lot of this has to do with where an individual uses these reloads and what temp changes you may incur. If you are in the south part of the U.S. and pretty much stay there then that is one story but if you live in Montana like me where it can be 100 plus in the summer and WAY below zero in Nov. then that is a different story. Yes there is a difference.</p><p></p><p>I use H4831sc in my 280AI and my son uses RL22 in his. In August one year we put 6 rounds of his and 6 rounds of my reloads in the freezer for a week, took them out , put them in a cooler packed with ice and went to the rifle range. Temp that day was 90 something. We each fired 5 rounds through the chrony with ammo that was not in the freezer. Then one round at a time we removed them from the cooler and shot them through the chrony. The H4831sc was far superior in matching the ambient temp reloads versus the RL22.</p><p></p><p>With that said the RL22 produces much faster velocity than the H4831sc and shows no signs of pressure.</p><p></p><p>With the H4831sc and H1000 I would think you are on the right track. I always wanted to try some retumbo but was afraid I wouldn't get the velocity - I guess a person never knows unless you try.</p></blockquote><p></p>
[QUOTE="cowboy, post: 572864, member: 8833"] You said you had a 1-9" twist in your barrel. In my opinion you are just starting to take advantage of the twist with the 162 gr Amax and should very easily stabilize up to and including the 180 gr Berger's. I and my son both shoot this cal. in a 1--10" twist barrels and are using the 168 VLD Berger with great results. If you want to shoot the lighter grain bullets I would think you would have been better off going with a slower twist than 1-9". As far as the Hogdon powders being more temp. stabilized then say the RL powders. I think a lot of this has to do with where an individual uses these reloads and what temp changes you may incur. If you are in the south part of the U.S. and pretty much stay there then that is one story but if you live in Montana like me where it can be 100 plus in the summer and WAY below zero in Nov. then that is a different story. Yes there is a difference. I use H4831sc in my 280AI and my son uses RL22 in his. In August one year we put 6 rounds of his and 6 rounds of my reloads in the freezer for a week, took them out , put them in a cooler packed with ice and went to the rifle range. Temp that day was 90 something. We each fired 5 rounds through the chrony with ammo that was not in the freezer. Then one round at a time we removed them from the cooler and shot them through the chrony. The H4831sc was far superior in matching the ambient temp reloads versus the RL22. With that said the RL22 produces much faster velocity than the H4831sc and shows no signs of pressure. With the H4831sc and H1000 I would think you are on the right track. I always wanted to try some retumbo but was afraid I wouldn't get the velocity - I guess a person never knows unless you try. [/QUOTE]
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280 Ackley Improved question
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