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Joined: Oct 2009
Posts: 1,742
Campfire Regular
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Campfire Regular
Joined: Oct 2009
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I've had great accuracy with H1000 and 168 Bergers. I'd try it with the Amax. I haven't chronoed anything with H1000 but book velocities aren't slower than other powders in that burn rate. It's a very insensitive powder too. Great stuff. Can you share some specifics? I'm about to do a workup with H1000. 168Berger Hunting/67.0 H1000/Fed 215match/Fed Cases and .005" off lands. This load cut the size of my groups in half in my Sendero SFII that I've tried a lot of different loads in. These are pretty consistently under .5" groups for me. I've sinced tried the same load in Win brass with same results.
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Joined: Mar 2006
Posts: 14,475
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2006
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Am I the only one that thinks that Retumbo is a tad too slow for the 7mm Rem? I've damned near burnt out a barrel trying to make it work right with the 168 VLD.
My best results with the 162 A-Max were at around 60 grains of RL-22, but the velocity was uninspiring. And so it goes for me with the 7mm Rem and heavy bullets. Good velocities yield marginal accuracy or excessive pressure, and good accuracy comes at low velocities.
This is a Sendero/Swarovski/Jewel combo that is capable of, and has demonstrated, absurd accuracy with 139 grain bullets. Work up to 67gr of IMR7828ssc and check accuracy/velocity.
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Joined: Jul 2001
Posts: 60,049
Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,049 |
Retumbo works great in the 7mm RM with any bullet from 160 grains up, with very good velocities and excellent accuracy. It's also one of Hodgdon's Extremes, so velocity is consistent in normal or cold weather.
Magpro can get a little more velocity, but isn't very temp-resistant.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Dec 2007
Posts: 1,257
Campfire Regular
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OP
Campfire Regular
Joined: Dec 2007
Posts: 1,257 |
Thanks for all the suggestions.
I'll try to make it out this week to try the two powders I have. I'll check back in and report how it went.If they don't look good, I'll go pick up a pound of something else.
I loaded up some rounds. To hit the lands, I'm at 3.460. To fit the mag, I'm at 3.4. That's a big jump. Oh well, I'll see how it goes. My Kimber 308 jumps more than that and does well.
Today is beautiful,and with light wind. (Rare for here.) I can't drive because of eye problems and can't get a ride out to the range today. Having a new (to me)rifle and not being able to shoot it yet makes me feel like a carrot is being dangled right in front of me!
The never-ending flight
Of future days.
Paradise Lost. Book ii. Line 221
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Joined: Dec 2007
Posts: 1,257
Campfire Regular
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OP
Campfire Regular
Joined: Dec 2007
Posts: 1,257 |
This is the OP.
I shot the rifle today. I loaded ladders of h4831 and H1000. I know you are supposed to shoot ladders at several hundred yards, but I didn't have time and the wind was gusting over 20 (6-7:00)so I just shot at 100 yards. (I didn't want to wait any loner to shoot.)
First I shot two of HK at 68 grains to settle the rifle in the stock and get on paper. They landed 8 inches high and 9 inches left, but only .5 apart. I thought that was lucky for the first two shots. I clicked the scope and started shooting. (I let the rifle cool three minutes between shots once I started.)
My first shot with H1000 at 69 grains was 2734. Way slow. So I jumped to 71 grains. 2830 and about an inch high and right. Shot 71.3 grains and it landed a hair higher and a little to the right. It was 2859. 71.6 (last one for HK) was 2899. It key-holed the previous shot and the three holes were a little under .6.
That makes me happy! Bolt lift was fine and the primers look fine, too, so I think I'll go up another 1-1.5 and see what happens.
H4831 was not as good in this rifle. Shot number 1 was 62 grains. 2730. So I skipped down to 64 and 64.3. 2744 and 2754. The three bullet holes were 1.3 inches apart.
Anyway, I'm really happy with the rifle and H1000 so far. I'll head back out next week and hope that group wasn't a fluke.
The rifle is a 1995 boat paddle Ruger in 7 Mag. It hasn't been floated or bedded. The trigger is seven pounds one ounce and long. It is going to the gunsmith to get the trigger done and I'll put a Pachmayr pad on and switch it to normal swivels.
Thanks again for the help with the load.
The never-ending flight
Of future days.
Paradise Lost. Book ii. Line 221
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Joined: Aug 2010
Posts: 47,942
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 47,942 |
This is the OP.
I shot the rifle today. I loaded ladders of h4831 and H1000. I know you are supposed to shoot ladders at several hundred yards, but I didn't have time and the wind was gusting over 20 (6-7:00)so I just shot at 100 yards. (I didn't want to wait any loner to shoot.)
First I shot two of HK at 68 grains to settle the rifle in the stock and get on paper. They landed 8 inches high and 9 inches left, but only .5 apart. I thought that was lucky for the first two shots. I clicked the scope and started shooting. (I let the rifle cool three minutes between shots once I started.)
My first shot with H1000 at 69 grains was 2734. Way slow. So I jumped to 71 grains. 2830 and about an inch high and right. Shot 71.3 grains and it landed a hair higher and a little to the right. It was 2859. 71.6 (last one for HK) was 2899. It key-holed the previous shot and the three holes were a little under .6.
That makes me happy! Bolt lift was fine and the primers look fine, too, so I think I'll go up another 1-1.5 and see what happens.
H4831 was not as good in this rifle. Shot number 1 was 62 grains. 2730. So I skipped down to 64 and 64.3. 2744 and 2754. The three bullet holes were 1.3 inches apart.
Anyway, I'm really happy with the rifle and H1000 so far. I'll head back out next week and hope that group wasn't a fluke.
The rifle is a 1995 boat paddle Ruger in 7 Mag. It hasn't been floated or bedded. The trigger is seven pounds one ounce and long. It is going to the gunsmith to get the trigger done and I'll put a Pachmayr pad on and switch it to normal swivels.
Thanks again for the help with the load. Sounds like a nice rifle...You'll notice a difference in recoil after the decelerator is on...As long as you are happy with those velocities, that's all that is important...My winchester model 70 likes RE25 and 3,100 fps is attainable but my groups start falling apart. I back it down to around 2,950 to 3,000 fps and all is well and sub moa again...Get that trigger worked on and you'll sure have a sweet shooting Ruger there......
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Jun 2002
Posts: 9,921
Campfire Outfitter
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The velocity is way low. My classic stainless 7mm WSM exceeds that and I bet my new, EW 7mm WSM would as well.
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Joined: Dec 2007
Posts: 1,257
Campfire Regular
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OP
Campfire Regular
Joined: Dec 2007
Posts: 1,257 |
Yeah, that's what I thought, too.
I plan on working up to 73 grains. I'd like to get to 3000 fps, but would be happy with 2950 if it is accurate.
I was also worried if the Ruger twist would stabilize the Amax, but if my 100 yard test is an indicator, it seems fine.
The never-ending flight
Of future days.
Paradise Lost. Book ii. Line 221
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Joined: Aug 2010
Posts: 47,942
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 47,942 |
The velocity is way low. My classic stainless 7mm WSM exceeds that and I bet my new, EW 7mm WSM would as well. He's working with a 7mm rem mag and they can be very tempermental in the velocity dept........Your wizzum is much more effiecient so of course you'll get better velocities without even trying......Just something we have to live with......Like we hear and say, "the critters will never notice 100 fps difference" and I doubt the average hunter will either.......
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Nov 2007
Posts: 19,722
Campfire Ranger
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Campfire Ranger
Joined: Nov 2007
Posts: 19,722 |
I kind of lean toward IMR 7828 and H 870
NRA Lifetime Member
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OP
Campfire Regular
Joined: Dec 2007
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It's the OP again.
I went out this afternoon again.
72 grains of H 1000 was giving me 2920-2940 and great accuracy.
I shot 3 at 72.5. 2978, 2999, and 3018. (I don't like that spread, but the sun came out for the last shot and that may have made the chrono read high. Or, my barrel was hot. Or, I have an F1 chrony. Or...I don't know. Maybe I just don't have a consistent load!) The first two were.4, the third round opened the group to .8. (The barrel was really hot by then.)
I am really happy with the way the gun was shooting and I'm good with those speeds.
The primers look fine and the bolt opened easily. The only thing that concerns me is that I fired two of that load from a friend's rifle, and had bright ejector marks. (Mid 1980s Rem 700.) The bolt opened easily and the primers looked fine, but the marks mean he'd be over pressure with that load, right? What's weird is that he had the exact same speed on the chrony I did. I thought more pressure always equates to more velocity.
Any ideas as to the difference? My rifle is a Ruger, so maybe it is over pressure too and I just can't see the ejector mark like on the Remington? The load shoots so well, I'd like to settle on it. (It was 84 degrees when I was shooting and we were at 5100 feet.)
The never-ending flight
Of future days.
Paradise Lost. Book ii. Line 221
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