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Rifles, Reloading, Optics, Equipment
7mm STW
7mm STW Brotherhood - For those who shoot the 7mm Shooting Times Westerner
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<blockquote data-quote="7stw" data-source="post: 729874" data-attributes="member: 22854"><p>Jsthntn, I don't know what powder is going to be your " best " choice, as most of the above mentioned powder from the " brothers" is still going to be too slow in the barrel length that you have. Using a 22 inch barrel, it is difficult to get a 280 to burn all the 4350, and 140-150 grain bullets. What you have is a fairly overbore cartridge, and nor enough barrel to burn all the powder in. Obviously a faster powder is in order, but here is the caveat. Even with 4350, and a stout load, it all isn't going to burn in the barrel, and you are going to have a huge air space above the powder charge which sets up a scenario called the " secondary explosion effect" this is when the air above the powder charge actually gets ignited, and skyrockets chamber pressures. Usually, you can get a STW to shoot fairly well with a 24 inch barrel, and not sacrifice too much speed. But a 22 inch barrel is a whole other story, and a new set of rules. Yeah, probably H4350 would probably be your best and only option, but the muzzle blast is still going to be ferocious. You probably will not be able to get the usual velocities that are customary for a STW either. Good luck in your search, but approach your loads VERY cautiously.</p></blockquote><p></p>
[QUOTE="7stw, post: 729874, member: 22854"] Jsthntn, I don't know what powder is going to be your " best " choice, as most of the above mentioned powder from the " brothers" is still going to be too slow in the barrel length that you have. Using a 22 inch barrel, it is difficult to get a 280 to burn all the 4350, and 140-150 grain bullets. What you have is a fairly overbore cartridge, and nor enough barrel to burn all the powder in. Obviously a faster powder is in order, but here is the caveat. Even with 4350, and a stout load, it all isn't going to burn in the barrel, and you are going to have a huge air space above the powder charge which sets up a scenario called the " secondary explosion effect" this is when the air above the powder charge actually gets ignited, and skyrockets chamber pressures. Usually, you can get a STW to shoot fairly well with a 24 inch barrel, and not sacrifice too much speed. But a 22 inch barrel is a whole other story, and a new set of rules. Yeah, probably H4350 would probably be your best and only option, but the muzzle blast is still going to be ferocious. You probably will not be able to get the usual velocities that are customary for a STW either. Good luck in your search, but approach your loads VERY cautiously. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
7mm STW Brotherhood - For those who shoot the 7mm Shooting Times Westerner
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