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Rifles, Reloading, Optics, Equipment
Reloading
Stumped! Chamber pressure
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<blockquote data-quote="rcol317" data-source="post: 765122" data-attributes="member: 42917"><p>Well I spoke to soon. Shot her a couple days ago and again ran into stuck cases again. Shot with a chrony and all of the stuck cases were at very low pressure/speeds. One stuck @ 2498 fps only 46 gr H4831 SC, another @ 2620 fps 47.5 gr H4831, Shot four rounds @ 48 gr and 48.5 gr no stuck case. Also had a couple stuck cases with RL 22 in mid range loads. I'm convinced that it's a cam issue on the bolt. A couple of my neck sized cases wont come out after you close the bolt. Not tight but just snug as a fire formed case should be, but still the bolt won't eject. Another thing I found is that the fired cases that ejected without a problem when fired that when you re-chamber them into the gun the bolt won't pull them out? Came out fine when shot but now won't eject? Go figure!</p><p></p><p> I ran several of the spent cases into three other 6.5X284 rifles I have, two of which are Coopers and one a Custom Surgeon, the rounds chamber without a problem as if they have been full resized although they've been fired in the rifle that won't eject them. This indicates to me that there isn't excessive pressure and the cases aren't swelled.</p><p></p><p>Cooper is convinced I don't know what I'm doing and there isn't anything wrong with the gun.</p><p></p><p>I'm convinced there is a problem. I'm going to buy some factory rounds and see what they do, if they stick I'm sending it back to Cooper!</p></blockquote><p></p>
[QUOTE="rcol317, post: 765122, member: 42917"] Well I spoke to soon. Shot her a couple days ago and again ran into stuck cases again. Shot with a chrony and all of the stuck cases were at very low pressure/speeds. One stuck @ 2498 fps only 46 gr H4831 SC, another @ 2620 fps 47.5 gr H4831, Shot four rounds @ 48 gr and 48.5 gr no stuck case. Also had a couple stuck cases with RL 22 in mid range loads. I'm convinced that it's a cam issue on the bolt. A couple of my neck sized cases wont come out after you close the bolt. Not tight but just snug as a fire formed case should be, but still the bolt won't eject. Another thing I found is that the fired cases that ejected without a problem when fired that when you re-chamber them into the gun the bolt won't pull them out? Came out fine when shot but now won't eject? Go figure! I ran several of the spent cases into three other 6.5X284 rifles I have, two of which are Coopers and one a Custom Surgeon, the rounds chamber without a problem as if they have been full resized although they've been fired in the rifle that won't eject them. This indicates to me that there isn't excessive pressure and the cases aren't swelled. Cooper is convinced I don't know what I'm doing and there isn't anything wrong with the gun. I'm convinced there is a problem. I'm going to buy some factory rounds and see what they do, if they stick I'm sending it back to Cooper! [/QUOTE]
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Stumped! Chamber pressure
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