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shot today: 338 rum and edge-have ???'s

 
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Old 05-02-2010, 08:44 PM
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shot today: 338 rum and edge-have ???'s

I went shooting today with a coupld of buddies. i shot my edge, (30 inch tube) Brad shot a sporter wieght 338 Rum, built by shawn (26 in tube) and Pat was shooting an off the shelf 338 win mag.

We had a great time, and pat had the best group (2 shots) of the day at under an inch center to center at 621 yds!

He has an edge on order and i cant wait to see what he will do with that!

Brad shot the best group when distance is included with an incredible 1.75 inch center to center at 910 yards!!!! the wind was blowing and there was mirage etc, i am still not sure how he did it, but i saw it so i am forced to believe it!!

anyway, here is my question. We are both shooting 300 smk's and we are both using 90 grains of H-1000. Is this to hot for a RUM?

primers were a little flattened but the corners looked good, no sticky bolt, and a very light extractor mark. bottom line is the case's did not look like there was to much pressure.

2nd question. he chronographed his gun at 2794 and 2809. I thought it couldnt be, but today it validated on exball at 2808.

He and I wanted to hear your thoughts. There are no case pressure issues evident, but should we look for something else? any hidden issues we should look for, and lastly, anyone else getting this kind of velocities with this configuration of bullet, powder, caliber and barrel length?

This is nearly identical to my edge with the same load.

thanks, and have great day.

Last edited by lamiglas; 05-02-2010 at 08:55 PM.
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Old 05-02-2010, 11:03 PM
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Re: shot today: 338 rum and edge-have ???'s

No surprise at all. The 338-300 ultramag and the 338 ultramag are virtually the same thing. That is why most people working with the 338-300 ultramag went to the 338 ultramag in 2001 when it came out. Same accuracy and virtually the same velocity and one is standard off the shelf easy to load products. Makes it a simple choice.
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Old 05-02-2010, 11:26 PM
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Re: shot today: 338 rum and edge-have ???'s

Ditto on the no surprise at all comment.

I shoot a 338 RUM Rem 700 Sporter w/300 SMKs @2734 MV w/ 101 gr US-869. Could go more but am pretty tired of messing with cases. This load is very comfortable load and easy on brass.

Much depends the difference in barrels. Some chambers and barrels simple shoot faster than others.
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Old 05-03-2010, 12:27 PM
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Re: shot today: 338 rum and edge-have ???'s

These are the types of answers we wanted to hear! thanks for taking the time to respond.


It sounds like with the same 90 grains of powder these two should shoot close to the same, but i am suprised the 4" of barrel difference doesnt cost the RUM to shoot a little slower.

if anyone else has anything to add, please do so.

have a good day
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Old 05-03-2010, 03:57 PM
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Re: shot today: 338 rum and edge-have ???'s

I agree the 338 RUM is close in performance. A example of a difference though is my 338 edge will shoot 96 gr of H1000 without pressure signs and run 2910 fps. Not alot of difference but has a little performance edge on the standar 338 rum. I have heard of a few guys reaching the high 2900's and 3000 fps with retumbo and the edge.
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Old 05-03-2010, 09:36 PM
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Re: shot today: 338 rum and edge-have ???'s

What is your brrel length of your edge? My edge should show up in a week or so.
Mike
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Old 05-03-2010, 11:16 PM
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Re: shot today: 338 rum and edge-have ???'s

I had to do this for my self I just happen to have both the edge and the rum I loaded up some test rounds and with 94gr of retumbo in my edge with 300 smk and with a 28" tube i got 2850 and out of the rum same load it was 2710 with a 26" tube after this I up the loads to 98gr and at this I got 2904 out of the edge and the rum was 2794 but the second round out split the case in half so I stopped there and just so there's no talk of case faller these where new cases so I would be very careful in load these to round to hot
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