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Rifles, Reloading, Optics, Equipment
Reloading
Im 18 and I need help Reloading 300 RUM!!!
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<blockquote data-quote="375fan" data-source="post: 929586" data-attributes="member: 24835"><p>Are you trying to crimp case mouth on a cannulure of bullet? If so, then your seating die isn't set correctly.</p><p>If not, I still suspect seating die as cause of issue. A resized case that will chamber easily should do the same after being primed, filled with powder and bullet seated. I personally can't see a 150 sitting out far enough to cause problem, especially with the freebore most factory rifles come with on the ultra mags. ( I have ultras, 300 and 338,custom builds) To me it sounds like seating die is set too low and is causing cases to be crushed slightly deforming them, probably in shoulder area. Which then causes hard if not impossible to chamber loaded round. ( I learned this lesson a long time ago.) To determine if what I'm suggesting is correct then:</p><p>1. Put seating die in press.</p><p>2. Put a resized, unprimed, empty case (make sure it will chamber in rifle first) in shell holder of reloading press.</p><p>3. Slowly moving handle of press , push case up into die, if you feel pressure/contact on case before your press handle comes to complete stop then your seating die is set too low.</p><p>I agree with other poster that 150's are too light for 300 ultra. I wouldn't use less than 200gr bullets in it.</p><p>As you are new to reloading, proceed slowly, read your reloading manual thoroughly, most manuals have complete info on start to finish on basic reloading in them.</p></blockquote><p></p>
[QUOTE="375fan, post: 929586, member: 24835"] Are you trying to crimp case mouth on a cannulure of bullet? If so, then your seating die isn't set correctly. If not, I still suspect seating die as cause of issue. A resized case that will chamber easily should do the same after being primed, filled with powder and bullet seated. I personally can't see a 150 sitting out far enough to cause problem, especially with the freebore most factory rifles come with on the ultra mags. ( I have ultras, 300 and 338,custom builds) To me it sounds like seating die is set too low and is causing cases to be crushed slightly deforming them, probably in shoulder area. Which then causes hard if not impossible to chamber loaded round. ( I learned this lesson a long time ago.) To determine if what I'm suggesting is correct then: 1. Put seating die in press. 2. Put a resized, unprimed, empty case (make sure it will chamber in rifle first) in shell holder of reloading press. 3. Slowly moving handle of press , push case up into die, if you feel pressure/contact on case before your press handle comes to complete stop then your seating die is set too low. I agree with other poster that 150's are too light for 300 ultra. I wouldn't use less than 200gr bullets in it. As you are new to reloading, proceed slowly, read your reloading manual thoroughly, most manuals have complete info on start to finish on basic reloading in them. [/QUOTE]
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Forums
Rifles, Reloading, Optics, Equipment
Reloading
Im 18 and I need help Reloading 300 RUM!!!
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