mark fox
Well-Known Member
its not quality issue of the remington 700 its the quality of the brass. brass is large at the beltweb area.
I freely admit that I am new to magnum cartridges, but not to shooting or reloading.
I went to the range yesterday to zero my new Remington 700 Long Range in 7mm Remington Magnum, and had too many new experiences. The initial load that I created was well within Sierra's load recommendations. My goal was to develop a functional load for F class 1000 yard matches.
The load:
Bullet: Sierra 168gr MatchKing (.284)
Powder: 65.0 gr IMR7828
Primer: CCI 250 Magnum Large Rifle
Cases: 1 batch using once fired Winchester Western, 1 batch using Barnes, all rounds were once fired, but they were full length resized.
The Barnes brass loads chronographed at 2803 fps, the Winchester brassed loads chronographed at 2780 fps. Sierra's load recommendations would put this combination at about 2930 fps.
The major problem that I experienced was that the majority of the loads using the Winchester brass were difficult to extract after firing. None of the cartridges exhibited signs of excessive pressure, other than the difficult extraction.
I suspect that the lower velocities are due to insufficient crimping, but I am at a loss about the difficult extraction. The bore and chamber were thoroughly cleaned before the range session.
Thank you in advance for any and all constructive advice! gun)
Emphasis mine.I would NOT use the Tubbs FF on a new barrel, just do normal break in. Any marks on the brass exterior ? Velocities will always vary, better too low than too high to start, just bump your way up a little at a time. Some barrels pick up speed after a while.
I've found a couple of easy ways to polish a chanber.I just picked up a Rem 700 long range in the .300 WM and am having the same issue. Win brass. Brass is tumbled and full length sized. Headspace is between 4 and 5 thousanths. Case doesn't fit well in action with only 2 thousanths. 2 of the 9 pieces of brass already have split necks. Win brass is the roughest I've ever seen. Just not real happy at this point. Broz mentioned to me at this price point QC and overall care is likely lacking. Going to polish the chamber and go from there. Bruce
its not quality issue of the remington 700 its the quality of the brass. brass is large at the beltweb area.
My buddy has this same gun in the same caliber he was getting his speeds but it wasn't extracting the Winchester brass as well he put a new extractor in and it worked find after that unfortunately Remington is allowing some pretty crappy design errors to leave the factor right now one of those is the extractor on this exact mode if you compare the extractor to other 700s you will see it is almost nonexistent compared to them. Hope this helps with the extraction problem.
Believe it or not for my Rem 700 STW and my old Win 70 7mm Rem the old Winchester Supreme Nickel Plated brass was my favorite brass of all.I too use the WW brass (sure it has quality issues compared to premium brass) out of my three .300 Win Mags (SAKO, TC, and Savage) without any extraction problem.
Believe it or not for my Rem 700 STW and my old Win 70 7mm Rem the old Winchester Supreme Nickel Plated brass was my favorite brass of all.
It was hard but flawless and always fed and extracted better than any other brass I ran in them.
and you wont have any problems. with your remington 700 its not the gun its the brass or the loading issue. and the nature of the 300 win mag belted isssue
The diarrhea of the mouth of the literary prostitutes. " GUN WRITERS" Fact.... The belted round design is only good for one thing fire forming a improved design of cartrage. To bad the belt is still there. Headspacing at the back of a case is a poor design. sure you can neck size but will the round chamber without full forming ? bump the shoulder now your headspacing at the belt again. Is it any wonder why they dont use belted rounds in benchrest shooting. sure they are less accurate in most cases. and the constent growth of the 300 win mag causing constant brass change in neck tension ? dont get me wrong the preformance of the 300 wm is very good in some cases I would consider it to be one of the best all around cartrages known to man. fact still remains that the belt causes issues and that there has been lots of issues with 300 wm brass quality over the past 10 years.