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Shooting & Reloading - Mausers, Big Bores and others >> Rifles

DarylS
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Reged: 10/08/05
Posts: 26516
Loc: Beautiful British Columbia, Ca...

Re: Is the 7mm Rem Mag slow and never achieved predictions?
18/05/23 12:50 PM

7MM mag, with factory ammo usually did 2,860fps with 175's. They've changed the data now on factory ammo boxes, I think.
A .280 Ack/IMP will do that with a 26" bl.

I have a friend who "got" 3,050fps with 150gr. Sierra's in his factory 24" Belgium Browning .270. He shot quite a few moose with that rifle, including an Alaskan moose (in Spatzizi park, B.C.) It was huge & all his Cessna 185 could do to pack it out. Good thing Laslui Lake is a long one. He shot the moose in the low ground along the creek on the west end of the lake.
In exactly 700rounds the normally sub-MOA accuracy climbed to 1 1/2". I checked it out and it had 1 1/2" of throat erosion.
I re-barreled it with a PacNor 26" barrel, and he still gets just over 3,000fps with it, but with the max. load of H4831 instead of the same amount of IMR4831.
Yes- stiff bolt lift with the IMR load, every time. He thought that was normal and did not know there was a difference in those powders. Nuff said.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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Subject	Posted by	Posted on
Is the 7mm Rem Mag slow and never achieved predictions?	NitroX	16/11/22 07:04 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	DarylS	17/11/22 03:30 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	DarylS	10/01/23 05:51 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	DarylS	11/01/23 04:55 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	tinker	11/01/23 05:01 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	DarylS	11/01/23 08:14 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	NitroX	11/01/23 06:50 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	Rule303	11/01/23 08:04 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	NitroX	11/01/23 11:41 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	Rule303	12/01/23 08:21 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	NitroX	12/01/23 11:09 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	Rule303	13/01/23 02:13 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	chuck375	18/05/23 11:59 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	DarylS	18/05/23 12:50 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	DarylS	13/01/23 04:12 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	DarylS	12/01/23 09:37 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	DarylS	12/01/23 03:45 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	NitroX	11/01/23 07:04 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	Rule303	17/11/22 08:17 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	Homer	05/01/23 07:39 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	93mouse	05/01/23 08:00 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	NitroX	05/01/23 09:24 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	3DogMike	09/01/23 01:49 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	eagle27	09/01/23 04:48 PM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	mchughcb	10/01/23 12:14 AM
Re: Is the 7mm Rem Mag slow and never achieved predictions?	tinker	10/01/23 12:51 AM

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