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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
i think i have a 338 weatherby ultra mag!
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<blockquote data-quote="splattermatic" data-source="post: 291937" data-attributes="member: 6781"><p>got this from my dead machinist as the last thing he built for me.</p><p>it's a douglas ss barreled 338 rum.</p><p></p><p><img src="http://img.photobucket.com/albums/v631/splattermatic/338rum1stgroup1-1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>her barrel measures right about 26.25" plus a touch to the beginning of the muzzle brake. 27.5 oal.</p><p></p><p>i used a stoney point oal gauge to measure out a 250 sierra gameking last night, finally after waiting for brass to come in, and i got the bullet just touching the mouth of the neck !</p><p>so a bit of adding and subtracting, i came up with a jump of .330 , after seating them at 3.650" ! weatherby's have long throats too, so i called it a 338 weatherby ultra mag !</p><p></p><p></p><p>i loaded up 5 rounds with 95 grains of rldr 25 under the 250 and shot her today...</p><p></p><p>i don't think i need to try anything else...!!</p><p><img src="http://img.photobucket.com/albums/v631/splattermatic/338rum2ndgroup2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>after the 3 shot group, i clicked over 7or 8 clicks, since i miss counted due to my friends muzzle blast ! and fired the one just out from the dot.</p><p>my friend shot the last one..</p><p></p><p>so i have a question since my chrono is acting up and want a reasonable answer quicker than waiting to go to the range again with his chrono...</p><p></p><p>with the above load and measurements, what do you think my velocity is ?</p><p></p><p>sighted in dead on at 100 yards i counted clicks and have 93 left for distance... should be good to about 1k i hope.</p></blockquote><p></p>
[QUOTE="splattermatic, post: 291937, member: 6781"] got this from my dead machinist as the last thing he built for me. it's a douglas ss barreled 338 rum. [IMG]http://img.photobucket.com/albums/v631/splattermatic/338rum1stgroup1-1.jpg[/IMG] her barrel measures right about 26.25" plus a touch to the beginning of the muzzle brake. 27.5 oal. i used a stoney point oal gauge to measure out a 250 sierra gameking last night, finally after waiting for brass to come in, and i got the bullet just touching the mouth of the neck ! so a bit of adding and subtracting, i came up with a jump of .330 , after seating them at 3.650" ! weatherby's have long throats too, so i called it a 338 weatherby ultra mag ! i loaded up 5 rounds with 95 grains of rldr 25 under the 250 and shot her today... i don't think i need to try anything else...!! [IMG]http://img.photobucket.com/albums/v631/splattermatic/338rum2ndgroup2.jpg[/IMG] after the 3 shot group, i clicked over 7or 8 clicks, since i miss counted due to my friends muzzle blast ! and fired the one just out from the dot. my friend shot the last one.. so i have a question since my chrono is acting up and want a reasonable answer quicker than waiting to go to the range again with his chrono... with the above load and measurements, what do you think my velocity is ? sighted in dead on at 100 yards i counted clicks and have 93 left for distance... should be good to about 1k i hope. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
i think i have a 338 weatherby ultra mag!
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