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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
My 6.5 Sherman rifle and load development thread
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<blockquote data-quote="Korhil78" data-source="post: 1227038" data-attributes="member: 34818"><p>Alright got some reloading updates:</p><p></p><p>Got the dies all set up. I bought Norma 280 Rem brass for the 6.5 Sherman. You can also use 270 Win brass. I ran 50 pieces of brass through a .284 expander ball to get them round again. Then I backed the 6.5 Sherman bushing die with .292 bushing in it out and put a piece of brass in the shell holder and raised the ram all the way. I turned the die down until it touched the case. I turned it down a few turns more and started necking the case neck down to .264. I kept backing the die down a little at a time and until the case neck was approximately 75% sized down which leaves a false shoulder on the case neck. After that you are pretty much done with the case.</p><p></p><p>It went really fast for 50 cases. The 280 Rem cases measured anywhere from 2.531-2.534 before fireforming. The maximum OAL for brass in the Sherman chamber is 2.525. After fireforming, they were the perfect trim to length for the 6.5 Sherman at 2.515. Do not trim the brass down to 2.515 before fireforming or your brass will be way to short after fireforming. You will not need to trim brass at all after Fire forming. </p><p></p><p>Below is the picture of a 280 Rem case on the left, a 280 Rem case neck sized down to .264 for 75% of the case neck (notice the false shoulder on the neck). On the right is the fire formed case. </p><p></p><p>My fireforming load was 140 gr Hornady match HPBT seated at 2.895 (measured using a Hornady comparator), 57 gr of H1000 and BR2 primer. </p><p></p><p>Rich let me know how the formed case looks and if there is anything. That I need to do better. </p><p>[ATTACH]64296[/ATTACH]</p></blockquote><p></p>
[QUOTE="Korhil78, post: 1227038, member: 34818"] Alright got some reloading updates: Got the dies all set up. I bought Norma 280 Rem brass for the 6.5 Sherman. You can also use 270 Win brass. I ran 50 pieces of brass through a .284 expander ball to get them round again. Then I backed the 6.5 Sherman bushing die with .292 bushing in it out and put a piece of brass in the shell holder and raised the ram all the way. I turned the die down until it touched the case. I turned it down a few turns more and started necking the case neck down to .264. I kept backing the die down a little at a time and until the case neck was approximately 75% sized down which leaves a false shoulder on the case neck. After that you are pretty much done with the case. It went really fast for 50 cases. The 280 Rem cases measured anywhere from 2.531-2.534 before fireforming. The maximum OAL for brass in the Sherman chamber is 2.525. After fireforming, they were the perfect trim to length for the 6.5 Sherman at 2.515. Do not trim the brass down to 2.515 before fireforming or your brass will be way to short after fireforming. You will not need to trim brass at all after Fire forming. Below is the picture of a 280 Rem case on the left, a 280 Rem case neck sized down to .264 for 75% of the case neck (notice the false shoulder on the neck). On the right is the fire formed case. My fireforming load was 140 gr Hornady match HPBT seated at 2.895 (measured using a Hornady comparator), 57 gr of H1000 and BR2 primer. Rich let me know how the formed case looks and if there is anything. That I need to do better. [ATTACH]64296.vB[/ATTACH] [/QUOTE]
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My 6.5 Sherman rifle and load development thread
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