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Rifles, Reloading, Optics, Equipment
Reloading
Chamber length and brass, to trim or not to trim, that is the question.
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<blockquote data-quote="Hugnot" data-source="post: 2241285" data-attributes="member: 115658"><p>There must be a reason why variable & excessive stretching is happening. I have a .300 WM & F/L size on the shoulder and trim .020 or more and can go 3 or more firings before trimming again. F/L sizing & head-spacing using the belt might increase non-uniform case stretching by blowing the brass forward. I have found that excessively long cases tend to show heavy powder residue along the sides of the necks & brass body with deposits on the bolt face and front part of the bolt. My guess is that the crimping action resulting in jamming a round into the front of the chamber prevents neck expansion. Fired & smudged cases show abnormally small neck diameters.</p><p></p><p>I have shot some rodents with my .300 WM: the load being H4350 & the 150 Hornady SST's. Excessive recoil & blast made me quit.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2241285, member: 115658"] There must be a reason why variable & excessive stretching is happening. I have a .300 WM & F/L size on the shoulder and trim .020 or more and can go 3 or more firings before trimming again. F/L sizing & head-spacing using the belt might increase non-uniform case stretching by blowing the brass forward. I have found that excessively long cases tend to show heavy powder residue along the sides of the necks & brass body with deposits on the bolt face and front part of the bolt. My guess is that the crimping action resulting in jamming a round into the front of the chamber prevents neck expansion. Fired & smudged cases show abnormally small neck diameters. I have shot some rodents with my .300 WM: the load being H4350 & the 150 Hornady SST's. Excessive recoil & blast made me quit. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Chamber length and brass, to trim or not to trim, that is the question.
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