Not sure that's achievable with either the 300NM or IMP. Most guys are doing well to hit 3k (or just shy) with the 230's in a non-improved case.
There isn't enough case capacity there without a hybrid throat like what Defensive Edge is using in their +P. You can do it with a 30-338 Lapua Imp fairly easily using a longer barrel.
Planning building a IMP version with 32" Krieger. Was hoping for 3150-3200 with 220 Lapua Scenar L and rel 33. Does anyone know the accuracy node for 220 SMK/Scenar and 230 Berger? Think I read somewhere that node was 3000 fps, and next node close to 3200 fps.
Mored details on the rifle...? Barrel length? Action specs?
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Bat integrated pic rail HR action, Bartlein 1:10 @20", Mcmillan stock, US Optics 6x fixed, MOA reticle. 200 grain Barnes LRX, 88 grains of H1000. Greg Tannel's love.
Nice thread. I have just ordered a 300 norma mag build here in Sweden. It's gonna be a Surgeon XL with a krieger 1:9 700mm barrel. Stock is Terry Cross and i'm gonna top that with a Kahles k624i MSR. So it's basicly a longsword but put together here in sweden. I have been planing on running 230's hybrids and probably vv n-570. It's gonna be sweet when I pick it up.
I`ve read that some claim the 300 Norma is more efficient than 300 Lapua ? My rifle will be a single shot with loong barrel, and weight doesn't matter. About how much speed will i gain going for 34" instead of 32" Barrel? Think I go with a 35 degree imp with 110 grain case capacity (water)
Are you happy with your choice of barrel length? That sounds great (handy, lighter, etc.) Velocity is still good? How's the blast/recoil?
Idaho, what speed did you get with max load rel 33 and 230 Berger out of your 300 imp?
I got 3075fps with R-33 and a 230 Berger in a 30" Bartlein 4 groove. I'm pretty sure my barrel is slow or so it seems to me. My improved version is 110.3 grains if I remember right and a standard is 103.5. I would think I'd see more velocity then that seeing as how guys are getting near 3k out of a standard and a shorter barrel.
I have another 30" Bartlein 5R Sendero barrel lying around that I might do another one with to compare the velocity. I might even order a stepped throater to see what is possibly for velocity. I think 3150 to 3200fps is possible that way but you will give up some barrel life.
I also have a 33" Bartlein 5R Heavy Palma I'm going to build a 30-338 Lapua Imp on, when I get my reamer in the next week or two, to see what is possible with the 230's. I'm shooting for 3400fps and I think that is fairly reasonable since I know others are getting 3150fps in a 26" barrel and 3225fps in a 28" barrel. If the gain stays consistent for the next 5" I'd be at 3412fps in a 33" barrel. With that case capacity I'd expect it to stay fairly consistent to 33".
I have another 30" Bartlein 5R Sendero barrel lying around that I might do another one with to compare the velocity. I might even order a stepped throater to see what is possibly for velocity. I think 3150 to 3200fps is possible that way but you will give up some barrel life.
I also have a 33" Bartlein 5R Heavy Palma I'm going to build a 30-338 Lapua Imp on, when I get my reamer in the next week or two, to see what is possible with the 230's. I'm shooting for 3400fps and I think that is fairly reasonable since I know others are getting 3150fps in a 26" barrel and 3225fps in a 28" barrel. If the gain stays consistent for the next 5" I'd be at 3412fps in a 33" barrel. With that case capacity I'd expect it to stay fairly consistent to 33".
The 20" barrel is very handy, I trued my balistic solver at 2950fps with the 200 grain bullets. While hunting I never even noticed the rifle going off, to focused on the moment, on the bench and developing a load it does have a bit of blast, and some left over recoil, rifle weighs 8-9 lbs. A fat bastard brake would be a better option for that ammount of powder I would think.
Tummen;
This would a great option as well if you haven't seen it on the sale forum;
http://www.snipershide.com/shooting...rgeon-remedy-300-norma-fs-**price-drop**.html
All the best with your build
How do you think accuracy and barrel life will be on the 300 Lapua imp compared to 300 Norma imp?
I personally think you will give up accuracy and the barrel life will probably go down 150-200 rounds. Guns are no different than cars......if you want to have one of the fastest it's gonna cost you. If the accuracy is too far off I'll set it back and do another Norma Imp. with the barrel.
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How much do you think its possible to gain from 30" to 33-34" barrel in 300 Norma imp? Does anyone have experience with really long barrels in 300 Norma/IMP?
You'd probably gain 30-35fps/inch up to 32-33" and then it would probably drop off a bit after that. 33" would most likely get you 90-100fps over a 30" barrel.
I'll have a better idea about fps and barrel length after I get my 30-338 Lapua Imp. done as I know what others are getting with slower barrels.
I'll have a better idea about fps and barrel length after I get my 30-338 Lapua Imp. done as I know what others are getting with slower barrels.
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Thanks
Should be very close to 3200 fps with 230 berger in your 300 N Imp and 33-34" barrel
I just ordered a reamer very close to yours.35 degree shoulder, same throat but just a little more bodytaper. Also ordered a 34" Krieger 1-9 barrel blank.
Thanks
Should be very close to 3200 fps with 230 berger in your 300 N Imp and 33-34" barrel
I just ordered a reamer very close to yours.35 degree shoulder, same throat but just a little more bodytaper. Also ordered a 34" Krieger 1-9 barrel blank.
What throat length on your reamer?
Nathan reamers is 235 mine is 256 on our 300nm imp 35* i think 235 is more for 215gr..my smith started on it just dont kow which reamer to use
I think 235 is kind of between 215 and 230 Berger.I will mostly use Lapua 220 Scenar L, but don't know what throat that will fit it. Guess somewhere between 235-260
My throat is .235" but it was set up to be between the 215's and 230's so I could shoot either if one or the other didn't shoot. Bjay's would be better for shooting straight 230's but .021" isn't much. My shoulder dimension is straight from a 338 Norma.
Mine is very close but has a 0.572" shoulder dia.
Just sent my reamer drawing to Whidden for die set. Have you received yours? Good stuff?
Bjay and I both got our dies. I also got my 30-338 Lapua Imp chambered last Sunday and fireformed 10 rounds today. I really don't want to waste much barrel life fireforming so I'll probably only do 20 rounds to see if it shoots and then rechamber a Remington factory barrel to form brass in if it shoots. When I get me reamer back from Bjay's smith I'll do the same for my Norma Imp. I found some other brass to use in my Norma Imp that will require neck turning and fireforming but should last a good long time. BTW my Lapua Imp is .572 at the shoulder.
Here is a picture of my 30-338 Norma Imp versus my 30-338 Lapua Imp. Both have 35 degree shoulders and roughly the same taper. The Lapua Imp holds 122.7grs of water and the Norma Imp. holds 110.3.
Here is a picture of my 30-338 Norma Imp versus my 30-338 Lapua Imp. Both have 35 degree shoulders and roughly the same taper. The Lapua Imp holds 122.7grs of water and the Norma Imp. holds 110.3.
Attachments
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Looks really good
What brand is the brass you found that need neck turning with a 0.341 neck?
Hope the Whidden dies are good stuff.
Update when you have tested the 338 Lapua imp
I go for a 33" barrel in my 300 Norma imp, and hoping for 3150-3200 fps with 220 Scenar/230 bergermy current 300NM load data
barrel 26' 1:9
powder H1000 @ 85.5 gn
Bullet berg 230 target .005" off lands
speed FPS AV 2959
100m target group .2 moa x 5 shotgroup
weather dry light winds temp 22c
barrel 26' 1:9
powder H1000 @ 85.5 gn
Bullet berg 230 target .005" off lands
speed FPS AV 2959
100m target group .2 moa x 5 shotgroup
weather dry light winds temp 22c
Thanks for the load data. There isn't much out there for this cartridge - especially with a 26-foot barrel. Just messin' with you!
Barrel life expectations for 300NM seem to be all over the map. Ive found everything from 900 rounds to 4000. Anyone have any solid intel? I understand the variables. Just looking for a solid estimation for normal loadings fired at a reasonable pace.
A 300 Norma is basically a 300 Weatherby, 300 Jarrett, 30-8mm, etc. There isn't 3 grains of difference between them. Barrel life will be short if you run it hot and fast or upwards of 1500 rounds if your nice to it.
Figured I might have slightly better luck w/ this request posting here to get a targeted audience ... does anyone have two pieces of fired (and not resized) 300 NM brass (don't care if primer pockets are blown out) that someone is willing to ship me so I can have Hornady make a modified case for me? Send me a PM. Thx.
300 RANGE REPORT
230 Berger
Fed 215 M Primer
H-1000 80 grains
Muzzle velocity 2850
1 and 9 twist
group .102
Bought the Rifle here from 260shooter and the Schmidt ans Bender 5-25-56 from Mile High Shooting.
also loaded five rounds with CCI 34 primers see group pix.
230 Berger
Fed 215 M Primer
H-1000 80 grains
Muzzle velocity 2850
1 and 9 twist
group .102
Bought the Rifle here from 260shooter and the Schmidt ans Bender 5-25-56 from Mile High Shooting.
also loaded five rounds with CCI 34 primers see group pix.
Copper Creek will make you one, 11 bucks.
http://coppercreekammo.com/index.php?main_page=index&cPath=49&zenid=04a240a4caf123fb3f3120bf5cf79064
In comment box say you want 300 Norma.
It will work, you probably want a heavier bullet
I run a 230gr Berger at 2960fps out of a 25" Brux Barrel 1-10
You want at least a 24" barrel out of it
I run a 230gr Berger at 2960fps out of a 25" Brux Barrel 1-10
You want at least a 24" barrel out of it
I'm in the process of putting the pieces together to build a 300 Norma and was going with a 1-10" twist barrel to be able to shoot both the 215 and 230 Berger's but see many using a 1-9" twist barrel.
Is this so the 230's will stabilize better at ELR or ?
Is this so the 230's will stabilize better at ELR or ?
Berger 215 vs 230 = higher bc, which for a long range bullet means a lot.
I am using the new Hornady 225 gr. ELD-M, which supposedly has a bc higher than the Berger 230.
I am using the new Hornady 225 gr. ELD-M, which supposedly has a bc higher than the Berger 230.
The 1-9 will work, I am using a 1-10 and it's awesome at both ELR Distances and short ranges (100 yard zero shoots 1/4MOA)
Don't fall for the trap and going faster than 1-9...
Don't fall for the trap and going faster than 1-9...
[h=3]Programming Note: GAP 300NM Update[/h]
Sniper's Hide
I was able to stretch my 300 Norma Magnum a bit on this day. I had 2 loads to play with, but only a couple of rounds. My first load is relatively slow, pushing the 230r Berger @ 2715fps. It’s super accurate, but really slow. My next load I played with was pushing the same 230gr Berger at 2950fps, maybe even a bit more. This was an absolute hammer and much more comfortable to shoot than a 338.
My drops at distance were:
1300 yards - 9.1 Mils
1500 yards - 11.6 Mils
1700 yards - 14.3 Mils
1900 yards - 17.9 Mils
2100 yard - 21.5 Mils
2200 yards - 23.5 Mils
It’s an H1000 load and we’ll have more on that later.
If you want that crossover rifle, the 300NM is definitely one to consider. It’s much more efficient and a bit easier to work with.
I was able to stretch my 300 Norma Magnum a bit on this day. I had 2 loads to play with, but only a couple of rounds. My first load is relatively slow, pushing the 230r Berger @ 2715fps. It’s super accurate, but really slow. My next load I played with was pushing the same 230gr Berger at 2950fps, maybe even a bit more. This was an absolute hammer and much more comfortable to shoot than a 338.
My drops at distance were:
1300 yards - 9.1 Mils
1500 yards - 11.6 Mils
1700 yards - 14.3 Mils
1900 yards - 17.9 Mils
2100 yard - 21.5 Mils
2200 yards - 23.5 Mils
It’s an H1000 load and we’ll have more on that later.
If you want that crossover rifle, the 300NM is definitely one to consider. It’s much more efficient and a bit easier to work with.
Lowlight:
I am in the process of switching from RL33 to H1000 with the 230. Would you mind giving a little guidance on a starting load with H1000?
Thanks!
I am in the process of switching from RL33 to H1000 with the 230. Would you mind giving a little guidance on a starting load with H1000?
Thanks!
84gr I think is the load, Andrew McCourt did my last load and I don't recall what he used...
Thanks, Lowlight.
Using the numbers above; 230 Hybrid @ 2,950 fps (sea level & 60F) in a 10 twist barrel has a stability factor of 1.39, which is marginally stable. Kick the altitude to 3,000, and it goes up to 1.55, which would explain good results west of the Mississippi.
If you go with a 9 twist (sea level & 60F), the stability factor jumps up 1.71 which is well into optimal.
Big takeaway from the AB crew having shot the King of the 2 Mile, optimal/max stability is huge when it comes to ELR/Transonic performance.
Is h1000 to fast to try on one of my 300nm with 30" barrel. Im using this powder with my shorter norma 26" barrel
Thanks for the info, I think I will start looking for a 1-9" twist barrel now just to be safe.
Not really, the Army listening to the same group is having problems with the 1-8 as recommended .... by ?
They are giving up a lot to over twist stuff, and the King of 2 Mile is shot in Raton, 6000ft actual, with a DA around 9000ft in the Summer Nobody hit the farther targets, look at the actual results of the KO2M, the race cars they were launching did not over perform, early on I believe a 300WM held pace pretty far out.
My accuracy works on both ends,
At Shot Show several people who took the 1-8 bait are now wondering wtf ?
How often are sea level folks shooting beyond 2000 yards ? very few places can manage that, it's far and few between to screw up your shorter range results The fact this works explains my use of 230s and the other guys are playing with all sorts of different bullets, now its the 215s
Testing being done, independently is showing that over twisting stuff like being recommended is changing the bullets. You don't know when, but it throws shots because the lead is moving under the jacket and causing problems
They same crew told people that a 260REM needs a 1-7 twist - square that circle. Originally everyone was crowing about the 1-7 twist with the 130gr Hybrid then all of the sudden when nobody was looking it quietly switched to the 136 Scenario because Lapua has as thicker jacket.
