416 Rigby & 400gr North Forks

[450 Rigby]

https://www.northforkbullets.com/north-fork-bullets/north-fork-bullets/caliber-366/north-fork-semi-spitz-ss-bullet-in-caliber-366.html

Guess they're out of stock. My apologies....don't have my contacts in.

 

[Rule 303]

That's rockin along for a 450gr bullet. I'm sure that's got some serious "swat" on the receiving end, both directions. My thinking was to try H4350 since the powder charge is a little less to help mitigate some of the recoil, however it may be a moot point.

Have you taken any Buffalo or other dangerous game with the 450gr Woodleigh? Are you regulated both for softs and solids in 450gr?

I haven't seen much of anything available from Woodleigh since the shop fire. Northforks are available from Reloading International.

I have only taken paper targets with the 450's. They are at my recoil tolerance level. The H4350, though a quicker powder produces noticeable less felt recoil and certainly not as sharp.

My 410 grain Woodleigh SP and 400 grain Hydros print to the same point of impact at 100mts and everything in between. Woodleigh are up and running again but I figure it will take some time to get every thing restock around the world. Go with the Northfork's if they are available.

 

[SStomcat]

416 Rigby, Norma brass, Fed match magnum large rifle primer, 400gr North Fork cup point solid.
View attachment 622593

No crimping right? May I know why so.

 

[BC Tal]

First off, I’m using a falling block single shot for these 416 rds, but I don’t crimp for anything anyway, gas gun, bolt or single shot. Neck tension has always held the bullets in place, never had a problem across all rifle platforms. These loads are more than accurate enough for what I want from them.

 

[BC Tal]

A quick search resulted in a ton of threads in AHF on crimping, including one 2 months ago on crimping 416 Rigby. Many will go to their grave for and against crimping. I simply don’t.

 

[Dakota Hunter]

I’m taking some 400 grain North Fork bonded soft points to try this summer on buffalo along with some 450 grain Woodleighs for my 416 Rigby.

A quick search resulted in a ton of threads in AHF on crimping, including one 2 months ago on crimping 416 Rigby. Many will go to their grave for and against crimping. I simply don’t.

 

[mooze]

Hi, I am starting to load NF cup-monolithics for my 416 Rigby. Hornady brass, FED 201 GM primers. I have loaded 350gr TTSX with H100 v to about 2670 fps, so I have an idea for a starting load with H100V.
BUT I would really like to use Hornady SUPERFORMANCE. Does anyone have experience with this powder in the 416 RIGBY? burnrate is similar to H4831.

 

[Rule 303]

Hi, I am starting to load NF cup-monolithics for my 416 Rigby. Hornady brass, FED 201 GM primers. I have loaded 350gr TTSX with H100 v to about 2670 fps, so I have an idea for a starting load with H100V.
BUT I would really like to use Hornady SUPERFORMANCE. Does anyone have experience with this powder in the 416 RIGBY? burnrate is similar to H4831.

H4831 is AR2213 and I can tell you in the 416 Rigby it kicks way faster and harder than AR2209 (H4350) You need about 10 grains more powder with AR2213 (H4831) to get the same velocity as AR2209 (H4350).
With the 416 Rigby case you can load ed it up to damn near equal the 416 Weatherby quite safely. So if you want higher velocity just put more AR2209 in.

 

[mooze]

H4831 is AR2213 and I can tell you in the 416 Rigby it kicks way faster and harder than AR2209 (H4350) You need about 10 grains more powder with AR2213 (H4831) to get the same velocity as AR2209 (H4350).
With the 416 Rigby case you can load ed it up to damn near equal the 416 Weatherby quite safely. So if you want higher velocity just put more AR2209 in.

If only H4350 were available in Canada. Quite hard to get anywhere. I like the idea of a very temperature stable alternative.

Any explanantion why H4831 kicks harder although it is a slighter slower burning powder?

I am not really looking for more speed, just a more reliable supply of powder. The loads for the TTSX with H100 v are shootable, but do have a kick. I do have a fair supply of H100 which would be plan B.

 

[Rule 303]

If only H4350 were available in Canada. Quite hard to get anywhere. I like the idea of a very temperature stable alternative.

Any explanantion why H4831 kicks harder although it is a slighter slower burning powder?

I am not really looking for more speed, just a more reliable supply of powder. The loads for the TTSX with H100 v are shootable, but do have a kick. I do have a fair supply of H100 which would be plan B.

The only reason I can think of, as to why the slower powder kicks harder, is you are using a more of it.

H100 is AR2217 and even slower. From the ADI (manufacturers of these powders) reloading book. AR2209 94 grains for 2456 fps, AR2213sc 102 grains for 2432 fps, AR2217 116 grains for 2470 fps. All these with a 400grain bullet.
So I would think the H100 (AR2217) might boot a bit more.

I might notice this a bit more than you as a 416 Rigby with 450 grain bullet at 2400fps is my recoil tolerance level.

 

[Green Chile]

Recoil is more affected by powder weight than by powder type. Technical term is ejecta, which is weight related. Recoil calculator software does not ask for powder type but rather powder weight. Whenever you are looking for less recoil, you are basically looking for a formula that uses less powder weight to get similar speeds with that bullet weight. It can vary quite a bit, especially in Nitro calibers.

 

[mooze]

The only reason I can think of, as to why the slower powder kicks harder, is you are using a more of it.

H100 is AR2217 and even slower. From the ADI (manufacturers of these powders) reloading book. AR2209 94 grains for 2456 fps, AR2213sc 102 grains for 2432 fps, AR2217 116 grains for 2470 fps. All these with a 400grain bullet.
So I would think the H100 (AR2217) might boot a bit more.

I might notice this a bit more than you as a 416 Rigby with 450 grain bullet at 2400fps is my recoil tolerance level.

I just checked the ADI data, thanks for the pointer.
I am loading 97 gr of H100v behind a 350 gr Barnes TTSX, nearly 20 grain less than suggested by ADI for a 350 gr Speer hotcor and still getting 2580 fps...
I'll just start from square 1.

 

[Raccoon357]

Hi, I am starting to load NF cup-monolithics for my 416 Rigby. Hornady brass, FED 201 GM primers. I have loaded 350gr TTSX with H100 v to about 2670 fps, so I have an idea for a starting load with H100V.
BUT I would really like to use Hornady SUPERFORMANCE. Does anyone have experience with this powder in the 416 RIGBY? burnrate is similar to H4831.

I am using H100V with 430 gr SS/CPS NF’s
Served me well on Buff and Giraffe.
2,350 FPS

 

[Nhoro]

The reason why we have PP is becuase .375 300gr is normally the smallest for buff hunt. Therefor we make the mouth thickness little thicker. That makes the bullet penetrate deeper before its fully expanded. So for a cat, SS bullet penetrate almost the half animal before its fully expanded. So for US game and antelope our PP is perfect. Fast expansion, straight deep wound channel. Then for the largest antelope and buffalo SS works perfect.
Our 366 bullet has thinner mouth thickness and expand therefor quicker. I know we could use that as a sales argument but i prefer to be honest. Our .366 bullet expand very quick and easy. Our 214 and 250gr bullet have even thinner mouth then our .286gr bullet.

Best Regards
North Fork Technologies Team.

The reason why we have PP is becuase .375 300gr is normally the smallest for buff hunt. Therefor we make the mouth thickness little thicker. That makes the bullet penetrate deeper before its fully expanded. So for a cat, SS bullet penetrate almost the half animal before its fully expanded. So for US game and antelope our PP is perfect. Fast expansion, straight deep wound channel. Then for the largest antelope and buffalo SS works perfect.
Our 366 bullet has thinner mouth thickness and expand therefor quicker. I know we could use that as a sales argument but i prefer to be honest. Our .366 bullet expand very quick and easy. Our 214 and 250gr bullet have even thinner mouth then our .286gr bullet.

Best Regards
North Fork Technologies Team.

I wish more munafacturers were honest about their products like you are. I often read about bullet 'failures' and problems that are just people using the wrong product. People also disregard velocity effect on the bullet using soft bullets at high velocity or hard bullets at low velocity and then complain about poor performance. And don't get me started on the successful marketing stories like you can use lighter bullets because the bullet penetrates so well when in reality the bullet takes up powder capacity and needs higher velocity to open reliably.

Most engineering involves compromises to achieve the end goal. It is refreshing to hear some straight talk.

 

[450 Rigby]

I am using H100V with 430 gr SS/CPS NF’s
Served me well on Buff and Giraffe.
2,350 FPS

Would you mind sharing what your starting powder charge is?

 

[Journey]

Following along as I just started loading for my 416 rigby.