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Rifles, Reloading, Optics, Equipment
Reloading
4350 Powders
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<blockquote data-quote="Mike Matteson" data-source="post: 2231863" data-attributes="member: 101791"><p>I have all those rifles except the 243. I use H4350, H4831, when I can get it H1000 I will put that into play. The 338 WM I use Win-760, which I still have to do temper check on the powder. The 338WM load is W-760 powder was develop in hot weather, so I do not worry about the high temp's, but cold weather I don't know yet. I do hunt in -20 to 100+ temp weather. I hold my shot to about 500yds. In my 308 N.Mag in I use H4350 at 3300fps with a 165gr AccruBond bullet now. Some inside info on the 308 NM that I load for. I use 300WM brass to start with. I FL size them to 308 NM cases and cut the necks for thickness. After fire forming the brass. I use a 300WM neck sizing die to sizes the cases. It only size about 1/2 the neck. It stop the case stretch. I was going through cases in about 3 to 5 firing before that. It change to loose primer pockets after that. in 10 to 14 firing. I was also splitting necks in 5 or so firing. Annealing ended that. I came up with this in early 2000 not really knowing why or how it was effecting my cases. I now I have learn of a new process in correcting primer pockets. I haven't put into use, but I will. Presently I am thinking of having Redding to built me a 308NM busting dies to use. I am in the process of getting Redding bushing FL dies for my other rifles. I never use bushing dies to bump my cases, but can see the value in doing that. I neck sized for a great many years.</p><p>I have first hand experience with IMR powders and temperature changes. That happen in 2000. Blow a primer out of a case in my 308 NM rifle in the early summer. Load was develop in the late winter. Temperature changed about 50 degrees. The load were hot in the winter and really got hot in the early summer. Loads being are flat primers, no ejection marks.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 2231863, member: 101791"] I have all those rifles except the 243. I use H4350, H4831, when I can get it H1000 I will put that into play. The 338 WM I use Win-760, which I still have to do temper check on the powder. The 338WM load is W-760 powder was develop in hot weather, so I do not worry about the high temp's, but cold weather I don't know yet. I do hunt in -20 to 100+ temp weather. I hold my shot to about 500yds. In my 308 N.Mag in I use H4350 at 3300fps with a 165gr AccruBond bullet now. Some inside info on the 308 NM that I load for. I use 300WM brass to start with. I FL size them to 308 NM cases and cut the necks for thickness. After fire forming the brass. I use a 300WM neck sizing die to sizes the cases. It only size about 1/2 the neck. It stop the case stretch. I was going through cases in about 3 to 5 firing before that. It change to loose primer pockets after that. in 10 to 14 firing. I was also splitting necks in 5 or so firing. Annealing ended that. I came up with this in early 2000 not really knowing why or how it was effecting my cases. I now I have learn of a new process in correcting primer pockets. I haven't put into use, but I will. Presently I am thinking of having Redding to built me a 308NM busting dies to use. I am in the process of getting Redding bushing FL dies for my other rifles. I never use bushing dies to bump my cases, but can see the value in doing that. I neck sized for a great many years. I have first hand experience with IMR powders and temperature changes. That happen in 2000. Blow a primer out of a case in my 308 NM rifle in the early summer. Load was develop in the late winter. Temperature changed about 50 degrees. The load were hot in the winter and really got hot in the early summer. Loads being are flat primers, no ejection marks. [/QUOTE]
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