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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
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<blockquote data-quote="Steve Shelp" data-source="post: 22797" data-attributes="member: 22"><p>Before you go spending a lot of money trying different things on the rifle, try the simple solution that Dave King had pointed out above in his very good evaluation of your problem. I would have to agree with him in that, it's your ammo, or more specifically the powder/primer/bullet combo. Just because a load gives 2 tight and one loose shot doesn't mean it's a good load with a flyer. Be honest with your self here. One of those 2 shots together could be the "flyer" and the other 2 shots far apart could be the normal load. You just simply don't know.</p><p> I would try a different powder. In any 7mm Mag I've ever shot and loaded for if IMR4350/IMR4831/ or H4831 didn't give good consistant results, I started looking at the rifle for problems. We had a match at the NC 1,000yd club yesterday and 3 of the 4 Factory class relay winners were firing 7mm Rem Mag in Remington 700 rifles. I talked to each one of them because the 7mm Mag has come on strong in the last couple of matches to knock off the 300 Win Mag as the Factory Class "King of the Hill". They all said they were using IMR4350 with 150 and/or 168 MK bullets. The match report says otherwise but I saw the loading cards in thier ammo boxes.</p><p> Also I would suggest not using the GM215M primers. You don't need a magnum primer just becasue your case has magnum stamped in the case head. I use GM210M primers in my 338 Lapua Improved mag down into the 40F temperature range without problems at all. And that's igniting 90+gr of very slow powder. In my 300 Win Mag I had to drop down from the GM215M to a GM210M to get rid of the vertical flyers at long range and bump my load up 2 grs to compensate for the velocity loss. Just a suggestion.</p><p></p><p> But play with your powder/different wgt loads first in .5gr increments until it consistantly shoots tighter groups. The Remington Senderos in 7mm Mag and 300 Win Mag are shooters. Yes they do have problems now and then, but I've seen to many shoot right off the shelf to give up on yours just yet.</p><p></p><p>Hope this helps,</p><p>Steve</p><p></p><p>[ 07-14-2002: Message edited by: Steve Shelp ]</p></blockquote><p></p>
[QUOTE="Steve Shelp, post: 22797, member: 22"] Before you go spending a lot of money trying different things on the rifle, try the simple solution that Dave King had pointed out above in his very good evaluation of your problem. I would have to agree with him in that, it's your ammo, or more specifically the powder/primer/bullet combo. Just because a load gives 2 tight and one loose shot doesn't mean it's a good load with a flyer. Be honest with your self here. One of those 2 shots together could be the "flyer" and the other 2 shots far apart could be the normal load. You just simply don't know. I would try a different powder. In any 7mm Mag I've ever shot and loaded for if IMR4350/IMR4831/ or H4831 didn't give good consistant results, I started looking at the rifle for problems. We had a match at the NC 1,000yd club yesterday and 3 of the 4 Factory class relay winners were firing 7mm Rem Mag in Remington 700 rifles. I talked to each one of them because the 7mm Mag has come on strong in the last couple of matches to knock off the 300 Win Mag as the Factory Class "King of the Hill". They all said they were using IMR4350 with 150 and/or 168 MK bullets. The match report says otherwise but I saw the loading cards in thier ammo boxes. Also I would suggest not using the GM215M primers. You don't need a magnum primer just becasue your case has magnum stamped in the case head. I use GM210M primers in my 338 Lapua Improved mag down into the 40F temperature range without problems at all. And that's igniting 90+gr of very slow powder. In my 300 Win Mag I had to drop down from the GM215M to a GM210M to get rid of the vertical flyers at long range and bump my load up 2 grs to compensate for the velocity loss. Just a suggestion. But play with your powder/different wgt loads first in .5gr increments until it consistantly shoots tighter groups. The Remington Senderos in 7mm Mag and 300 Win Mag are shooters. Yes they do have problems now and then, but I've seen to many shoot right off the shelf to give up on yours just yet. Hope this helps, Steve [ 07-14-2002: Message edited by: Steve Shelp ] [/QUOTE]
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