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7MM at 2770 fps with 168 grain berger?

 
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  #15  
Old 06-14-2012, 05:04 PM
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Re: 7MM at 2770 fps with 168 grain berger?

actually its only 22" barrel...its a colt light rifle...how velocity am i loosing with a 22" barrel vs a 26" barrel?
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  #16  
Old 06-14-2012, 05:55 PM
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Re: 7MM at 2770 fps with 168 grain berger?

That's a short barrel for a 7mag. You are losing (and I could be wrong!!)Probley 150to200fps with that short of a barrel in a magnum caliber! You are not getting the most from your powder burn either. Just my two cents,but you Probley are already having muzzle flash issues. (bet that's a big ball of fire). If where you are at now with your load an it's accurat, I would leave it alone. I think anything more than what you have now is gonna start sending fliers.(group gonna open up)Later in time get it rebarreled with more tube to work with. Then air it out! Just my two cents!!

DT
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  #17  
Old 06-14-2012, 09:09 PM
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Re: 7MM at 2770 fps with 168 grain berger?

The elk I killed in 2010 was with the same speed with the same bullet. At 690yds he jumped up the hill twice and then rolled over backwards. The bullet broke the onside shoulder and stopped against the other, and weighed 62gr.
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  #18  
Old 06-14-2012, 10:13 PM
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Re: 7MM at 2770 fps with 168 grain berger?

I dont own a 7mm Rem so I have no first hand experience with the caliber but I would suggest trying to develope a load with a faster powder, starting at scratch. Im betting some 4350 or one of the alliant powders will help you push that bullet a little faster in that short tube.

I use a load in my .280 rem pushing a 140 VLD at 2850fps... which is really slow (24" tube). Catch is the two times I chrony'd it I had and ES of 5fps, so.... Ill take the slow load. Ive never shot a smokin' hot group with it, but its always decent, and the low ES is re-assuring.
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  #19  
Old 06-14-2012, 10:54 PM
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Re: 7MM at 2770 fps with 168 grain berger?

Quote:
Originally Posted by WEATHERBY460 View Post
actually its only 22" barrel...its a colt light rifle...how velocity am i loosing with a 22" barrel vs a 26" barrel?
Like I said, if you're happy with what you have stick with it.

However, somewhere between 60-63gr of H4350 should be able to give you 2850-3000fps. Might want to load up a few and see.
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  #20  
Old 06-15-2012, 05:54 AM
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Re: 7MM at 2770 fps with 168 grain berger?

Got to echo with what WildRose says. If it works an you are happy with it,leave it alone an shoot it.
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  #21  
Old 06-15-2012, 09:09 PM
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Re: 7MM at 2770 fps with 168 grain berger?

Just shoot it like the others are saying. I've seen a bunch of 7rems, and none are very able to deliver much higher speeds than a 280 class will. I'm getting 3100 fps with a 140 and 2800-2900 with the 160 + bullets with my 7rem. Heck, my stw will do over 3100 fps with the 171 barnes I'm shooting, but the accuracy is at 2950fps, so that's where she shoots.

Last edited by Lefty7mmstw; 06-15-2012 at 09:10 PM. Reason: clarification
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