338 Norma Reloading Data

moses42ak

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Oct 1, 2009
Messages
132
Location
Arkansas
We’ve run MagPro, 7977 and 8133 with 300 grain SMK’s. Ran 8933 up to 90.6 grains without pressure signs. It seems to be a much slower powder than it shows on the charts. We were in the low 2,700’s at 90.6. MagPro at 90.5 grains got us to the high 2,600’s. I’ll be trying some different loads with that. 87 grains of 7977 got us in the low 2,700’s. These were with a slow 26” barrel and your mileage may vary with pressure. We’re finishing a couple builds right now that should be better platforms. @SheepShapeAK you’ll probably see the FDE build on the Talkeetna range if you go out there after the middle of August.
 

SheepShapeAK

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Joined
Apr 17, 2020
Messages
87
Location
Alaska
We’ve run MagPro, 7977 and 8133 with 300 grain SMK’s. Ran 8933 up to 90.6 grains without pressure signs. It seems to be a much slower powder than it shows on the charts. We were in the low 2,700’s at 90.6. MagPro at 90.5 grains got us to the high 2,600’s. I’ll be trying some different loads with that. 87 grains of 7977 got us in the low 2,700’s. These were with a slow 26” barrel and your mileage may vary with pressure. We’re finishing a couple builds right now that should be better platforms. @SheepShapeAK you’ll probably see the FDE build on the Talkeetna range if you go out there after the middle of August.

I’ll be out guiding until the 27th unless we tag out early. Which I’m hoping happens, so I can get back and get everything dialed in before my Sheenjek float.
 

SheepShapeAK

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Apr 17, 2020
Messages
87
Location
Alaska
869 was a bust. Only shot the first five loads then called it. Way too slow for the NM. Had an unburnt powder kernel in the barrel after the last shot.

H1000 will be my powder. 86.9 grains behind the 275gn BD II.

This was my five shot string seated at 2.935” to the ogive.

01046BA7-A5DA-4E3F-B07B-843BB1065A05.jpeg
 

SheepShapeAK

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Joined
Apr 17, 2020
Messages
87
Location
Alaska
869 was a bust. Only shot the first five loads then called it.

H1000 will be my powder. 86.9 grains behind the 275gn BD II.

This was my five shot string seated at 2.935” to the ogive.
 

SheepShapeAK

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Joined
Apr 17, 2020
Messages
87
Location
Alaska
Went out this morning to zero the scope and run more of my 86.9 grains of H1000 across the Labradar. Pretty happy with this load and the groupings. Now if I could just shoot off my pack that would be great. Need to just put the bipod on the rifle and try that.

All rounds at the 300 yard line again.

26” Bartlein 1:9.3
New Peterson Cases
86.9 grains H1000
2.935” to ogive
275 grain BD II



96C33132-6DDA-4FA5-936D-8DA00812F267.jpeg


First string of five before dialing the scope in.
4F862D23-1141-428D-A38D-DFBB322AEC24.jpeg


Second string of five after adjusting the scope.
AB35076F-FB42-4E36-8A61-444024504993.jpeg


My horrible shooting off my pack.
0953942F-9CB4-4636-823E-1DB7008A5959.jpeg
 

moses42ak

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Joined
Oct 1, 2009
Messages
132
Location
Arkansas
You’re going to have to make a decision pretty soon. Either commit to practicing with the pack or just mount the bipod. We got our chassis back from Rivers Bend yesterday, waiting on the actions and parts to get back from QPQ then off to the smith to cut the threads and chambers. Hoping to be shooting by the second week of August.
 

SheepShapeAK

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Joined
Apr 17, 2020
Messages
87
Location
Alaska
You’re going to have to make a decision pretty soon. Either commit to practicing with the pack or just mount the bipod. We got our chassis back from Rivers Bend yesterday, waiting on the actions and parts to get back from QPQ then off to the smith to cut the threads and chambers. Hoping to be shooting by the second week of August.

In reality my shot will probably be 50-75 yards and I could have just brought the 458 SOCOM on the float trip. 😂
 

codyadams

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Joined
Jan 7, 2015
Messages
3,770
Location
Southwest Wyoming
Went out this morning to zero the scope and run more of my 86.9 grains of H1000 across the Labradar. Pretty happy with this load and the groupings. Now if I could just shoot off my pack that would be great. Need to just put the bipod on the rifle and try that.

All rounds at the 300 yard line again.

26” Bartlein 1:9.3
New Peterson Cases
86.9 grains H1000
2.935” to ogive
275 grain BD II



View attachment 285425

First string of five before dialing the scope in.
View attachment 285428

Second string of five after adjusting the scope.
View attachment 285429

My horrible shooting off my pack.
View attachment 285430
Killer load man, looks like it will do!
 

arb5087

Member
Joined
Jul 20, 2021
Messages
12
Location
PA
Load for 28" 1-8.5 rock creek barrel
Mausingfield action
Once fired Peterson brass
Fed 215m primers
300 gr Hornady atips
Over 82.6grs of RL26
Approx fps 2700
800yd group 5 shots below waterline top group is comp rifle 6gt
 

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