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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Holy Hammers!!!
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<blockquote data-quote="Rich Coyle" data-source="post: 1920956" data-attributes="member: 70559"><p>Well I had a problem. I received the Hammer Hunter 8mm 198 grain bullets and no rifle. The Weatherby Mark V six lug ultralight with a Pac-Nor barrel with a muzzle of .65" was at Pendleton, Oregon at Oregongunsmithingllc.com getting rebored from 6.5 to 8mm. It already had one of their stocks; which cut ten ounces off the weight. Finally it arrived. Since it is a wildcat that looks like a 7 Weatherby with the belt turned off and necked up to 8mm I didn't know where to start. Someone here gave me some info. I started with H4350 @ 63.0 and went up to 72.5 grains by .5 grains increments. Surprisingly the velocity started at about 1,900 feet per second and went up to almost 3,100 fps. Steve suggested I use 72.0 grains so I did. The first three at 100 yards made a group of 1/4". I fired the first two and waited till the barrel cooled down to 65* before firing the third one. Then I went to the target and photographed it. By the time I got back the barrel was 66* so I fired #4 and went back to the target and measured it. The 7 1/4 pound rifle opened up the group to 9/16". I fired #5. It went inside the 9/16" established by the previous shot. Average velocity was a surprising 3,054 feet per second. Before I started I expected about 2,900 fps.</p></blockquote><p></p>
[QUOTE="Rich Coyle, post: 1920956, member: 70559"] Well I had a problem. I received the Hammer Hunter 8mm 198 grain bullets and no rifle. The Weatherby Mark V six lug ultralight with a Pac-Nor barrel with a muzzle of .65" was at Pendleton, Oregon at Oregongunsmithingllc.com getting rebored from 6.5 to 8mm. It already had one of their stocks; which cut ten ounces off the weight. Finally it arrived. Since it is a wildcat that looks like a 7 Weatherby with the belt turned off and necked up to 8mm I didn't know where to start. Someone here gave me some info. I started with H4350 @ 63.0 and went up to 72.5 grains by .5 grains increments. Surprisingly the velocity started at about 1,900 feet per second and went up to almost 3,100 fps. Steve suggested I use 72.0 grains so I did. The first three at 100 yards made a group of 1/4". I fired the first two and waited till the barrel cooled down to 65* before firing the third one. Then I went to the target and photographed it. By the time I got back the barrel was 66* so I fired #4 and went back to the target and measured it. The 7 1/4 pound rifle opened up the group to 9/16". I fired #5. It went inside the 9/16" established by the previous shot. Average velocity was a surprising 3,054 feet per second. Before I started I expected about 2,900 fps. [/QUOTE]
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