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338-300 RUM W/225 Cutting edge

 
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Old 07-21-2011, 02:01 PM
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Join Date: Mar 2002
Location: Wyoming
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338-300 RUM W/225 Cutting edge

I pulled out one of my 338-300 RUM's to test some loads with the 225 Cutting Edge bullet. It is a 28" Hart barrel 1-10 twist. This is one of my throat designs from the early development of the cartridge in the late 90's using a partial wby freebore. So many throats have been done by so many smiths later on as the cartridge gathered a closet full of names the data may or may not be useful in your particular rifle but will give you a good idea.

This rifle shot very well at 4.06 coal. My old accuracy load of 102.5 grains of RE-25 shot .36" at 100 yards. velocity was 3312 fps average.

My old accuracy load of 100.5 grains of WMR shot .52" at 3286 fps.

Fed 215 match primers with all loads.

These bullets are extremely long and are recomended seating very shallow into the case therefore the long coal. They are nearly as long as the 300 smk. I will get a bullet length later to give you an idea.

I tried seating them deeper to gain the success I had with the 338-378 wby test but they did not do well in this rifle. It preffered the seal tite band outside the case mouth.

These velocities combined with the .64 bc makes this bullet a good alternative for a lighter recoiling rifle out to 1000 or so yards. I will test it with some more powders later on.
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Last edited by Long Time Long Ranger; 07-21-2011 at 02:12 PM.
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Old 07-21-2011, 02:11 PM
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Re: 338-300 RUM W/225 Cutting edge

I'm interested in trying these bullets in a 338 Allen Xpress for hunting. I was just wondering if you have done any media testing on them or what your opinion is concerning their terminal performance. Thanks in advance.
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Old 07-21-2011, 02:18 PM
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Join Date: Mar 2002
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Re: 338-300 RUM W/225 Cutting edge

I will find out in August with terminal performance. I have a long trip planned again this year to Alaska. I am happy with the bullets so far but have no idea on terminal performance. That will be the key for me. I talked with Dan at cutting edge for a couple hours Monday and he said this particular bullet had excellent terminal performance. They have tested it extensively on eastern and western game. I will put in my test results when I get back from Alaska. I am happy with the performance and the bc seems to be real and not bogus. Like everyone else I am looking forward to see how they kill stuff. I am not a target shooter. I shoot long range to kill stuff and am very good at it. I hope the bullets are.
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