.450 Marlin Ruger No.1-S

[4fifty8]

Reloading .450 Marlin Ruger No.1-S

• original design for Marlin lever rifles 43,500 psi max pressure
• 450M shortened 458WM case with wider belt
• No.1 458WM max pressure > 43,500 psi
• followed 450M Hodgdon reloading guidelines using H4198
• 20" 1:16 barrel throated for increased case capacity
• settled on 350gr TSX@~2300 fps mv moderate no excess pressure signs
• 7.6 lbs with Leupold VX-2 Ultralight 3-9x33mm

https://i.imgur.com/z5OTDop.jpg / https://i.imgur.com/01ElQa6.jpg / https://i.imgur.com/QbYVD9V.jpg / https://i.imgur.com/oWIMGpR.jpg

 

[4fifty8]

405gr copper plated bullets: results

• target loads CamPro copper plated bullets & Blue Dot
• mild pressure ~1365 fps mv
• groups tighter bullet seated out, typical

https://i.imgur.com/NynSIUj.jpg / https://i.imgur.com/rN1Z1rA.jpg / https://i.imgur.com/CuYaDU6.jpg / https://i.imgur.com/TeENcmO.jpg

 

[Brutus]

I have an FN Mauser action in 458x2 inch American.
Try out 55.0 grains IMR-3031 with 350 Hornday Interlock.
Also with any 400-405 jacketed 53.0 grains of the same powder. And 13.0 grains of Red Dot powder on PB 400-405 cast for the pussy cat load.
Maybe?

 

[4fifty8]

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[Brutus]

I gotta say here friend. I have used some of the powders starting with an IMR 4 and friends replica sharps in the 45-70 with 4227 powder too.
There's considerable and sharp recoil right here.

Keep a close eye on your butt stock for cracking in the wrist area. The race for velocity in these cartridges will quickly expose any weakness. My two bits only.

I suggest you locate another butt stock for its inevitable requirement.

 

[4fifty8]

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[Brutus]

I wish you good luck.

 

[4fifty8]

Sierra 300gr HP & 300gr TSX same powder charge 100 fps mv difference either no excess pressure signs.

https://i.imgur.com/J9RnpqM.jpg / https://i.imgur.com/plbqmOx.jpg / https://i.imgur.com/ZhcGY7q.jpg

 

[Brutus]

I have too played with the earlier 300 grain spire HP Barnes TSX. They tend to be very accurate but there is considerable deviation from cup and core bullets of the same bullet weight. Pressure signs came early too which is too bad.

 

[4fifty8]

Settled on 350gr TSX@~2300 fps mv more wallop especially downrange. Although good results with 300gr TSX from my Ruger No.1 45-70@~2300 fps impact.

 

[Brutus]

Settled on 350gr TSX@~2300 fps mv more wallop especially downrange. Although good results with 300gr TSX from my Ruger No.1 45-70@~2300 fps impact.

There's nothing in North American forests and plains that could withstand this energy.

And I think you have the perfect bison rifle friend.

 

[4fifty8]

Results with iron sights

• checked off hand accuracy with iron sights want to use these for hunting
• owners manual says to drift rear base by tapping although mine has lock screw
• adjusting kinda phiddly trial & error but eventually got it about right
• re-attached zeroed scope fired 2 rounds approximately zeroed - awesome!

 

[WhelanLad]

beauty!

 

[Big bore dinosaur]

I agree H 4198 is a great powder.
RL 7 was also nice.

Have you tried the barnes 250 gr. TSX
Have good luck with then in my H&R

 

[4fifty8]

Prefer heavier got Hornady 500gr Interbond mild ~1800 fps mv will see how these group nice it has throat length to load these.

 

[4fifty8]

Chrony'd 500gr load ~1675 fps mv scope & iron sights zeroed for 350gr TSX improvise 500gr aim point should be ok for close range work.

 

[Big bore dinosaur]

Tried some 300 nosler BST
The black ones with the gummy grey tip.

2.040 short hornady brass
Winchester LRM primer
RL # 7
56 GR
58 cGR
Seated to the crimp.groove.. just...
Shot well in all 4 rifles ..
The 2 win 94 really shined 1/2 groups.

 

[4fifty8]

• 400gr Barnes Buster 450M BLR load in my 450M No.1
• about 75 fps slower mv in No.1 both 20" barrels
• mainly b/c No.1 1:16 twist more friction vs BLR 1:20 twist
• shoots low corrected by using reticle 2nd ballistic dot ok for close range

 

[4fifty8]

• today checked accuracy 500gr RN / H4198 @ 1675 fps mv
• also 405gr copper plated (CamPro) / Re7 @ 1500 fps mv (estimated)
• accuracy ok fine tune could improve

 

[Big bore dinosaur]

I sure like them barms busters..
Did the 500 gr Sp horn.. open at those velocities? If so.
How much..