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270 Win / 700 Rem mt. rifle

 
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  #1  
Old 01-08-2006, 05:51 PM
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270 Win / 700 Rem mt. rifle

Hey guys ,

This mountain rifle only has a 22" bbl. However I'm not at all sure that is enough for the velocity differences I'm seeing in a recent ladder test .


Max listed H4831 in the latest Nosler guide is 58 grs.for a 140 gr. ballistic tip. That load is shown to be producing 3000 fps out of a 24" bbl. ( velocities obtained with a Oehler 35p with 8 ft. screen spacing ) Well , in my sons remington mt. rifle with a 22" bbl. it is only producing 2788 fps [img]/ubbthreads/images/graemlins/frown.gif[/img] . Bullet is loaded ten thou off the rifling. Once fired rrem brass full prep.

I'm thinking that I need to go to a faster powder but I also want to carry out this ladder till pressure signs appear . What say you all ? Is it potentially worth it to continue with powder or am I barking up the wrong tree ?

At this point I thinking to load from 58 to 59.2 and go back to the range .

Thanks as always for your advice /input , Jim Brown
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Old 01-08-2006, 06:15 PM
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Re: 270 Win / 700 Rem mt. rifle

I USE RELOADER 22 IN MY .270 I STARTED AT 58 GR. WENT UP TO 62 GR.
I WENT WITH 61 GR. FOR 130 GR. BULLET 3160 FPS.
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Old 01-08-2006, 07:02 PM
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Re: 270 Win / 700 Rem mt. rifle

Jim, the first thing I'd tell you is that most of the reloading manuals, especially Nosler, print velocities that I've never been able to achieve. I think they get a figure and add 200 fps. Years ago, I went to a range after I had been loading for 3-4 years and a guy showed up with a chrono. He offered for me to shoot my rifle so we could see what it would do.

I was shooting 130, 140, and 150 NBTs with IMR4350, H4350, and 4831 each. I had some max and near max loads and not one was even close to published velocities in the manual.

Sometime later, the same occurred in a 30.06 with Speer bullets. So I just considered published velocities to be a bit embelished.

JMO.

Reloder powders have been top producers of velocities for me.
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Old 01-08-2006, 07:47 PM
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Re: 270 Win / 700 Rem mt. rifle

GUYS YOU'VE GOT TO REMEMBER NOSLER CONDUCTS ITS TESTING IN A CONTOLLED ATMOSPHERE. ALTITUDE, BAROMETRIC PRESSURE, AND DIFFERENT LOTS OF POWDER BARREL DIMENSIONS, IE., THE RIFLING LANDS AND GROOVES ALL CONTRIBUTE TO THIS. YOU WANT TO GET SOME WEIRD NUMBERS RUN SOME STORE BOUGHT AMMO THROUGH THAT OEHLER AND BE READY TO CATCH YOUR LOWER JAW WHEN IT DROPS BECAUSE THERE NUMBERS ARE WAY OFF TOO, SOME I HAVE SHOT IS AS MUCH AS 450 FPS OFF OF VELOCITIES. LOAD SAFE AND ACCURATE AND DON'T WORRY ABOUT THE SPEED. JUST MY OPINION. THANKS
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Old 01-08-2006, 10:20 PM
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Re: 270 Win / 700 Rem mt. rifle

see, the factory ammo is not always way off, i have shot several different federal premium over chronos in several rifles and gotten close to-deadon-above what they say. averages were all within 50fps either way.
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Old 01-09-2006, 12:36 AM
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Re: 270 Win / 700 Rem mt. rifle

[ QUOTE ]
I USE RELOADER 22 IN MY .270 I STARTED AT 58 GR. WENT UP TO 62 GR.
I WENT WITH 61 GR. FOR 130 GR. BULLET 3160 FPS.

[/ QUOTE ]

What's the bbl length?

58 of RL-22 gets me 3200 in a 27" bbl.

I can't get 61 gr in the case. If I could it would seize the bolt as 58.5 really expands the primer pockets.
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Old 01-09-2006, 07:49 AM
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Re: 270 Win / 700 Rem mt. rifle

I HOPE WE ARE TALKING ABOUT 270 WIN.?
IF WE ARE I THINK YOU HAVE A PROBLEM IF YOU CANT FIT 61 GR. OF RX-22 IN YOUR CASE,I JUST FILLED 1 TO MAKE SURE I WAS RIGHT, CASE LENGHT IS 2.536 65 GRAINS OF RELOADER 22 TO THE TOP
AND MY LIGHT WEIGHT .270 HAS A 22" BARREL
CHECK YOUR SCALE?
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