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The Range
Ammo & Reloading
Playing around with a new 357 Mag load
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<blockquote data-quote="Dumpstick" data-source="post: 3013246" data-attributes="member: 41653"><p>Okay folks, since everyone is interested, I figured I'd report on this load.</p><p></p><p> I went out and fired this new load this morning. Only fired 18 rounds.</p><p></p><p>The good - the load FEELS good. I fired it in a much-carried 4" Security Six with Pachy Presentation grips. It felt good.</p><p> - Primers, while somewhat flattened, showed no signs of stress. No firing pin cratering, the edges were still a bit rounded. Empties fell freely out.</p><p> - Accuracy was good, at least for a while.... more on that.... it shows promise. </p><p></p><p>The bad - These wouldn't even chamber in my GP-100. I know, I'm an idiot for not checking beforehand. I sized these to .358, which presented no problem in the Security-Six.</p><p> - Velocity was a bit higher than I wanted. The chrono was fighting me, it didn't want to sync with my phone, but the best I could tell I was getting about 1125 fps. From a 4" barrel. I need to back off some.</p><p></p><p>The ugly - Leading. By the 3rd cylinder, the rounds started tumbling although accuracy was still good. I looked at the barrel - the last inch or so is leaded to where the rifling is not visible. No lube star on the muzzle. This indicates, to me, that I'm running out of lube. </p><p></p><p>The plan - clean the barrel. Ugh.</p><p> - Break down the rest of the rounds. This is why we only load up a few on a new load. I know better. I'm blaming it on the new Lee Classic Turret press. Once I get in the groove, I just keep going.....</p><p> - Re-size the projectiles to .357, and put more lube on them.</p><p> - Reload, backing off a half-grain on the charge.</p><p></p><p>This is called 'working up a load." We do this for fun, right ? Including scrubbing the barrel......</p></blockquote><p></p>
[QUOTE="Dumpstick, post: 3013246, member: 41653"] Okay folks, since everyone is interested, I figured I'd report on this load. I went out and fired this new load this morning. Only fired 18 rounds. The good - the load FEELS good. I fired it in a much-carried 4" Security Six with Pachy Presentation grips. It felt good. - Primers, while somewhat flattened, showed no signs of stress. No firing pin cratering, the edges were still a bit rounded. Empties fell freely out. - Accuracy was good, at least for a while.... more on that.... it shows promise. The bad - These wouldn't even chamber in my GP-100. I know, I'm an idiot for not checking beforehand. I sized these to .358, which presented no problem in the Security-Six. - Velocity was a bit higher than I wanted. The chrono was fighting me, it didn't want to sync with my phone, but the best I could tell I was getting about 1125 fps. From a 4" barrel. I need to back off some. The ugly - Leading. By the 3rd cylinder, the rounds started tumbling although accuracy was still good. I looked at the barrel - the last inch or so is leaded to where the rifling is not visible. No lube star on the muzzle. This indicates, to me, that I'm running out of lube. The plan - clean the barrel. Ugh. - Break down the rest of the rounds. This is why we only load up a few on a new load. I know better. I'm blaming it on the new Lee Classic Turret press. Once I get in the groove, I just keep going..... - Re-size the projectiles to .357, and put more lube on them. - Reload, backing off a half-grain on the charge. This is called 'working up a load." We do this for fun, right ? Including scrubbing the barrel...... [/QUOTE]
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