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Rifles, Reloading, Optics, Equipment
Reloading
Best poweder for a 270 win
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<blockquote data-quote="royinidaho" data-source="post: 1092519" data-attributes="member: 2011"><p>For just starting out you are getting good advice. Here is some of my 50 years experience with the 270.</p><p></p><p>1966 - 24" Douglas barrel and 130 Sierras. Could't get 3000 FPS with all the 4831 I could stuff in. When I seated the bullet on more than 60 grains the case wall expanded and wouldn't chamber.</p><p></p><p>N205 was the goto powder. Easily ran nearly 3200 FPS. Got the same velocity with 4340 with higher pressure and shorter case life.</p><p></p><p>Ran the 4350 load for over 30 years.</p><p></p><p>After that many years the bbl was done. Replaced w/27" Lilja. Same issue with 4831.</p><p></p><p>Learned that Reloder 22 = N204 with fewer quality control steps. Velocity of nearly 3200 was again easily achieved with any 130 or 140 grain offering.</p><p></p><p>However measured velocity when temp was in the low 20s. More velocity loss was shown than I could accept as in the order of >100 FPS.</p><p></p><p>Tried 7827ssc. Loaded up to usual pressure signs on the W-W cases. Quit at 3200. Safely went much much higher than the 3200 but felt it simply was disrespectful to shoot a 270 Win at those velocities.</p><p></p><p>7828ssc has, in my experience, been very temp insensitive.</p><p></p><p>PP-4000 MR appears a bit faster than 7828ssc but easily achieves my desired velocity.</p><p></p><p>140 grain NABs, Hornady BTSPs, Bergers for all practical purposes are plenty accurate.</p><p></p><p>Some are notably more accurate than others but all are acceptable in this old Mauser action'd rig.</p><p></p><p>HTH</p><p></p><p>I go with the highest bc.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 1092519, member: 2011"] For just starting out you are getting good advice. Here is some of my 50 years experience with the 270. 1966 - 24" Douglas barrel and 130 Sierras. Could't get 3000 FPS with all the 4831 I could stuff in. When I seated the bullet on more than 60 grains the case wall expanded and wouldn't chamber. N205 was the goto powder. Easily ran nearly 3200 FPS. Got the same velocity with 4340 with higher pressure and shorter case life. Ran the 4350 load for over 30 years. After that many years the bbl was done. Replaced w/27" Lilja. Same issue with 4831. Learned that Reloder 22 = N204 with fewer quality control steps. Velocity of nearly 3200 was again easily achieved with any 130 or 140 grain offering. However measured velocity when temp was in the low 20s. More velocity loss was shown than I could accept as in the order of >100 FPS. Tried 7827ssc. Loaded up to usual pressure signs on the W-W cases. Quit at 3200. Safely went much much higher than the 3200 but felt it simply was disrespectful to shoot a 270 Win at those velocities. 7828ssc has, in my experience, been very temp insensitive. PP-4000 MR appears a bit faster than 7828ssc but easily achieves my desired velocity. 140 grain NABs, Hornady BTSPs, Bergers for all practical purposes are plenty accurate. Some are notably more accurate than others but all are acceptable in this old Mauser action'd rig. HTH I go with the highest bc. [/QUOTE]
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Reloading
Best poweder for a 270 win
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