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Anyone own a 7mm 300 Win Mag?

 
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  #22  
Old 02-12-2010, 05:24 AM
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Location: Taranaki New Zealand
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Re: Anyone own a 7mm 300 Win Mag?

Thanks for that, very useful. I will get out my calipers and have a look at your dimensions versus a necked down 7mm-.300 versus my magazine lengths etc. You musn't be too far off the correct velocities if your bullet drop is matching your charts at 1100 yards.

Great stuff.
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  #23  
Old 02-12-2010, 09:58 AM
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Re: Anyone own a 7mm 300 Win Mag?

Quote:
Originally Posted by Kiwi Nate View Post
You musn't be too far off the correct velocities if your bullet drop is matching your charts at 1100 yards.
Great stuff.

I was just high off the target for the first shot. I moves down 1 moa and we shot the group. Group was a bit low of center but this little 10 x scope has 1/2 moa clicks. So yeah, I am close at 1171 yds. As soon as I get the 6x24 back on her I will fine tune. Right now I am just waiting.

Jeff
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  #24  
Old 04-04-2010, 11:29 PM
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Re: Anyone own a 7mm 300 Win Mag?

Well it took a while to get the scope back... In the end they simply sent me a NEW scope. IOR 6-24x50 Tactical with MP-8 dot illuminated. The new scope corrected all the issues and she is a real shooter now.

Put the finishing touches on the rifle tonight. Settled with some finely prepped RP cases. CCI 250 , 77 gr of H-1000 and a 180 Berger VLD.

Zeroed at 250... Dead on and will pile them into a 1" group at 250. Then shot groups at 500 , 600 and 840 yards to do a tragectory validation for the exbal. It is now dead nuts on the program to 840 and shot 5 into just under a 4" group. This rifle shoots extremely well. The exbal program says the 180 Bergers are leaving the muzzle at 3175 fps. Still doing 2160 @ 840 yards with 1865 ft-lb of energy.

I am pleased, very pleased with this rifle.

Jeff
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  #25  
Old 04-05-2010, 12:05 AM
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Re: Anyone own a 7mm 300 Win Mag?

I am so happy for you. I have been wondering how you were getting on. You are 10fps behind my 7mm RUM/180VLD/26" barrel and have definitely confirmed my suspicions that my bigger case is pushing s***t uphill in comparison to your wildcat. One day soon, I will follow suit. The accuracy you are getting sounds exceptional, there is no feeling like a rig you can trust with both accuracy and clicks. Great stuff.
Nathan.
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  #26  
Old 04-05-2010, 08:43 AM
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Re: Anyone own a 7mm 300 Win Mag?

Nate, I am not pushing this thing for velocity either. minute or no flattening to the primers. I have had so many 300 wins shoot so good with 77 gr of H-1000 that I only tested loads of 75, 77 and 78 gr. The 77 gr load was so accurate and shows no sign of vertical stringing even past 1000. So why fight it. I should add that this reamer has some free bore in it. I measure the "O" give of the rifle at 3.065" with a 180 Berger. My most accurate load that I am using is seated with an "O"give of 2.950" so I am .115" off the lands. This fits in a STD magnum mag box. I played with this testing at 300 yards and the results were minimal but it did seem to like the jump. The next step is to move this load into some RWS brass.



Now here is the kicker.... I already had a 300 win being built when I found this rifle laying lonely at a gun shop. 1/2 way through the work up on the 7mm/300 I agreed to sell it to a friend that has never shot much long range. He is a guide for Elk and needs a good rifle. Yesterday he was doing all the shooting and is amazed with the accuracy and inlove with his new rifle..

I am to pick up my 300 win today. I am a huge fan of a 300 win but this 7mm/300 has my attention. One day I may have to build another.

Jeff
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  #27  
Old 04-05-2010, 01:20 PM
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Re: Anyone own a 7mm 300 Win Mag?

Jeff,
Thanks for the follow-up postings on the 7mm-300WM. You've got me thinking now! Sounds like a long range lazer. I could see one in my future.
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  #28  
Old 04-15-2010, 07:54 AM
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Re: Anyone own a 7mm 300 Win Mag?

Quote:
Originally Posted by Broz View Post
Nate, I am not pushing this thing for velocity either. minute or no flattening to the primers. I have had so many 300 wins shoot so good with 77 gr of H-1000 that I only tested loads of 75, 77 and 78 gr. The 77 gr load was so accurate and shows no sign of vertical stringing even past 1000. So why fight it. I should add that this reamer has some free bore in it. I measure the "O" give of the rifle at 3.065" with a 180 Berger. My most accurate load that I am using is seated with an "O"give of 2.950" so I am .115" off the lands. This fits in a STD magnum mag box. I played with this testing at 300 yards and the results were minimal but it did seem to like the jump. The next step is to move this load into some RWS brass.



Now here is the kicker.... I already had a 300 win being built when I found this rifle laying lonely at a gun shop. 1/2 way through the work up on the 7mm/300 I agreed to sell it to a friend that has never shot much long range. He is a guide for Elk and needs a good rifle. Yesterday he was doing all the shooting and is amazed with the accuracy and inlove with his new rifle..

I am to pick up my 300 win today. I am a huge fan of a 300 win but this 7mm/300 has my attention. One day I may have to build another.

Jeff
Seriously, what is wrong with you. You sold that rifle! I can't believe you'd sell a 1200 yard roughly 1/2 MOA shooter.

Tom
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