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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to blowup your rifle
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<blockquote data-quote="Magnumdude" data-source="post: 1381190" data-attributes="member: 751"><p>I have a 30-378 Imp. It'll hold about 137 grains of water, or I think about 10% more than a standard 30-378. I shot my first 230 grain Berger over 103 grains of Retumbo. I got 3250 FPS on an Oehler 33 P chronograph. The temp outside was in the 70s. The velocity surprised me...a LOT. I had a sticky bolt handle, cratered primer and a print of the ejector on the brass base. I had 5 rounds loaded with 103 grains of Retumbo which I packed back up, and pulled when I got home. I'm really sorry you wrecked your rifle, but at least you weren't injured physically. Emotionally I'd be a wreck having to cut up a custom rifle. I was going to do some load development this week, but it was 4 degrees when I got up this morning. If I don't get some better temps, like at least 20-something, I may test some other powders and bullets, but not the Retumbo. Copper fouling isn't a problem as I shoot all moly coated bullets and I burnished the bore with moly before firing any rounds. That Retumbo officially scares me to death now.</p></blockquote><p></p>
[QUOTE="Magnumdude, post: 1381190, member: 751"] I have a 30-378 Imp. It'll hold about 137 grains of water, or I think about 10% more than a standard 30-378. I shot my first 230 grain Berger over 103 grains of Retumbo. I got 3250 FPS on an Oehler 33 P chronograph. The temp outside was in the 70s. The velocity surprised me...a LOT. I had a sticky bolt handle, cratered primer and a print of the ejector on the brass base. I had 5 rounds loaded with 103 grains of Retumbo which I packed back up, and pulled when I got home. I'm really sorry you wrecked your rifle, but at least you weren't injured physically. Emotionally I'd be a wreck having to cut up a custom rifle. I was going to do some load development this week, but it was 4 degrees when I got up this morning. If I don't get some better temps, like at least 20-something, I may test some other powders and bullets, but not the Retumbo. Copper fouling isn't a problem as I shoot all moly coated bullets and I burnished the bore with moly before firing any rounds. That Retumbo officially scares me to death now. [/QUOTE]
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How to blowup your rifle
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