450 Bushmaster

303hunter

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72915D30-6D01-4733-BBE7-2B6D151A4535.jpeg Just found the big bore section a few days ago. Don’t know how I missed it! Anyway, here’s my 450 build. It sports an 18” BCA barrel, Kaw Valley linear comp, Aero upper, Burris Fullfield II 3-9x40 scope with PEPR mount.

Lower is a PSA with Rock River NM varmint trigger, and EFX stock. Very good shooter giving 1” groups with factory Hornady 250 FTX.
 
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Back in June this year I posted some work done here in 450 Bushmaster on the 45 Raptor thread............. In February this year with all the hoop la concerning the pistols, I decided to try a 16 inch 450 Bushmaster, Midway had AR Stoner uppers, reasonable price, so I got one on the way. Brass was available, dies were purchased, various bullets were either already on hand, or purchased as well and I made ready to play.

At first I bought AR Stoner magazines, then later I discovered the DuraMax magazines, the DuraMax are far far superior and very well made, and have a 7 rd version. Also, I believe with the Duramax I will be able to get some better feed/function with some of the bullets that gave me some issues, #13 CEB Solid 300 gr and some of the various Lehigh Extremes. Seating depth and DuraMax magazines might solve any issues I was having, but I have not had time to get to that point yet.

I started out in February thru April messing with various Hornady Flex, somewhat of a disappointment in many areas. Results were mixed with many different aspects. However, the more I played with this, the more I was impressed.........Shortly after the first AR Stoner, I got another............ one of my sons was impressed too, so I got him one as well.............

In May I decided the 450 Bushmaster was indeed a worthy cartridge, platform and I was quite taken with it. I had tried several powders and when it comes down to it you just can't beat Lilgun. Now it was time to up the game with adding Bullet Tech to the equation. Now, I am going to copy/paste some of the info I posted on the 45 Raptor thread.....;

The biggest is Bullet Technology and choice. This can make or break any cartridge. If you get very serious about your Raptor, then there are two bullets you need to look at, that I can promise and guarantee will out perform anything else available in .452 caliber............ and just so happens in my guns shoot to the same POI out to 50 yards. The first is the 160 gr Copper Raptor from Cutting Edge Bullets, the second is 250 Copper Raptor also from CEB. With these two bullets, you can handle anything that you will encounter in North American...... I am working on a good Solid load that will back those two bullets up. Feeding the first round in the magazine is the issue, but second round down works fine, but I need way more work with that before my confidence goes up with it.......... Do not consider these bullets in the same light as you would a conventional bullet, they are not. The 160 will handle anything up to and including black bear with ease. I would use the 250s for heavier critters, brown bear and say moose........... These loads are not over pressure, I have not found anything that works better than LilGun.

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On one of my guns I have a 1X Vortex Circle dot type sight, I think its called a Spitfire, point is there is no magnification, and with my eyesight I am lucky to get things to shoot properly....... I did a 50 yard test to check out POI for the three bullets and maybe get lucky enough to decide if accuracy was suitable in my guns......

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At 50 yards the Maximus accuracy just was not as good as the Raptors, and perhaps it was because they are .451 and not .452????? Whatever the reason, the Raptors shot far better than I can see or shoot, and even more important the POI of those two bullets are so close that I feel very easy about pick and choosing either bullet without changing sight in....... I decided to go with the 160 Raptor for 99% of what I would need, and have a few 250s on hand to handle heavier weights...........

I sighted in with the 160s......
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And just received my shipment to start laying away some ammo ............

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I like the big CEB Solid and the Lehigh Extremes, but, the issue is feeding first round out of the magazine which is a no go...... Now if you fire a round, like the Raptor, then the guns do feed the solids and lehighs there after....... or they have so far in limited testing....... this is one of the things I intend to investigate soon. I want to 100% confirm that the solids and lehighs will feed after firing a Raptor first.........

These would be extreme tools to have in your tool box to back up the Raptors............

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I am not satisfied with any of the Hornady Flex tips, they are fine for shooting and plinking.

Not long ago I was talking to Dan at CEB, he told me they had sent the wrong 250 Maximus to me, I should have got the ones made for the rifles and not the Muzzle Loading version, he promptly sent two boxes of the banded Rifle Version Maximus and they indeed did shoot extremely well, and very close POI with the other loads as well........
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For me these bullets from CEB and Lehigh enhance the 450 Bushmaster considerably and turn it into a very serious cartridge. I have some serious big bore cartridges on semi platforms, but some of mine on AR 10 platforms need wheels to move around......... this makes the 450 Bushmaster very inviting .............. I have some work left to do with the larger FN Solids and Lehighs, but I think I have a solution to work with those and make them reliable.
 
I like the big CEB Solid and the Lehigh Extremes, but, the issue is feeding first round out of the magazine which is a no go...... Now if you fire a round, like the Raptor, then the guns do feed the solids and lehighs there after....... or they have so far in limited testing....... this is one of the things I intend to investigate soon. I want to 100% confirm that the solids and lehighs will feed after firing a Raptor first.........

These would be extreme tools to have in your tool box to back up the Raptors............

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I am not satisfied with any of the Hornady Flex tips, they are fine for shooting and plinking.

Not long ago I was talking to Dan at CEB, he told me they had sent the wrong 250 Maximus to me, I should have got the ones made for the rifles and not the Muzzle Loading version, he promptly sent two boxes of the banded Rifle Version Maximus and they indeed did shoot extremely well, and very close POI with the other loads as well........
DSCN4495-X2.jpg


For me these bullets from CEB and Lehigh enhance the 450 Bushmaster considerably and turn it into a very serious cartridge. I have some serious big bore cartridges on semi platforms, but some of mine on AR 10 platforms need wheels to move around......... this makes the 450 Bushmaster very inviting .............. I have some work left to do with the larger FN Solids and Lehighs, but I think I have a solution to work with those and make them reliable.
Michael, what does are you using, and how picky are you when it come to them?
I need to get a set of 450BM dies. I want to shoot 300g or heavier cast bullets in a Howa mi i action bolt gun.
Thanks!
 
Need some clarification please?......... Not sure what you are asking..............
Friggin’ ottokerreckt.
what dies are you using, and how picky are you when it come to them?
My usual choices are Forster or Redding for rifle, Dillon for pistol.
 
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RCBS dies, I also like Redding.......... I use a lot of Hornady, which in the beginning I did not care much for, but have become accustomed to them, Hornady does all the
B&M dies...........
 
View attachment 149919 Just found the big bore section a few days ago. Don’t know how I missed it! Anyway, here’s my 450 build. It sports an 18” BCA barrel, Kaw Valley linear comp, Aero upper, Burris Fullfield II 3-9x40 scope with PEPR mount.

Lower is a PSA with Rock River NM varmint trigger, and EFX stock. Very good shooter giving 1” groups with factory Hornady 250 FTX.
Love mine. Have a bushmaster upper. Took it for hogs in Georgia a few years back. Great brush round for sure.
 
This is a 13 shot group with hand loaded 225 Hornady FTX at 100 yards. Not a great hunting bullet, but shows the accuracy potential of the 450. The 225 FTX is cheap enough for target shooting, but works fine on deer size game. Wouldn’t recommend it on anything larger.

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I have a friend in Michigan that is a 450BM fanatic, and he hunts seriously deer/bear. He also is an avid CEB Raptor fan, he won't even load anything else. It was his suggestion for the 160 Raptor load that I am using, he has used it in multiple semi platforms, multiple deer and occasional bear as well. If specifically after bear he goes with the 250 Raptors.

Hopefully in the next few weeks we can work in a Terminal day and test all of these bullets. Terminals are very time consuming and take several days just to get a test set up, and then a full day of testing. Its just been so busy here there has not been time yet. I have visions of the 160 Raptor at 2700+ fps just exploding zombies.......... So I have not been overly concerned with the terminals .......... I kinda have a good idea of how each of these bullets will perform. I got a lot more excited about the 450 BM when I started working with the Raptors, and realize just how serious this cartridge/rifle could get. Now if I can just get the big solids and Lehighs to function, combine those with the Raptors.... Wooo Hoo..... talk about serious...............I believe my issues in the beginning with the solids/lehighs was combination of seating depth and the magazine.... These Duramax mags are very nice, far smoother and nicer than others I tried.....
 
The long awaited 450 B&M Test work……….. In the beginning of this 450 BM adventure, I had absolutely NO PLANS of going much further than plinking with the thing, but things change, and with the addition of CEB Raptors and Maximus and some others, this has turned into a very serious little “Big Bore” cartridge, and the test work here is impressive to say the least.

We will start with the 160 CEB Raptors, and they are just wicked……… It has been a very long time since I have seen such massive, extreme, trauma in this test medium. These 160s are devastating at 2770 fps. Penetration of the base to 12 inches was right on par with what I had thought it would do, but I was not expecting such massive destruction of material………

I would not hesitate to use the 160s on animals up to 300 lbs or more. Zombies? Splattered……… Deer/pigs/bear, end of story………

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Moving to the 250 gr CEB Raptors Trauma is somewhat less, still substantial, far in excess of anything conventional of course, but some less than the 160 Raptors simply because of velocity, penetration is deeper with the larger remaining full diameter slug. For really big fat Zombies, this is the bullet, and of course animals bigger than standard deer/pigs/bear. Perhaps if I was on a bear mission, I would go with the 250 Raptors. This would also be suitable for much larger game in Alaska as well.

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The 250 CEB Maximus is similar to all 1st Generation Copper Hollow Point Bullets, those early ones from Lehigh I used, and the current Hammer bullets. These blades peel and shear about the same as the Raptors, but instead of radiating away from center, these stay closer to center wound channel, and even then they are very devastating as well, I would say slightly less than the Raptors, but way more than anything else you can imagine. These are ready for the heaviest animals you would want to hunt with a 450 BM………..

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Sam had some of those “Maker Bullets”, we tested a load with the 275 gr Version, we probably could up the velocity by a 100 fps or even more, but we tested at the first step with 2114 fps. These things are just wicked as well, I assume the copper has to be annealed since the petals/blades all stayed intact and did not shear….. reminds me of an octopus all stretched out. It produced extreme trauma as well ripping and tearing the medium to shreds. Penetration not as deep as the 250 Raptor or 250 Maximus, but would not expect it to be with the massive expansion…… This would be a Zombie ripper for sure……

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Sam had some 395 Hornady Sub X loaded that we tested too, and result were interesting to say the least.. I would class these as a success for sub sonic.

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And that is what we have so far………… I might try some standard Hornady bullets this coming week, and maybe even a Lehigh or two just to round things out………. But first I have to get some work done………….
 
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The long awaited 450 B&M Test work……….. In the beginning of this 450 BM adventure, I had absolutely NO PLANS of going much further than plinking with the thing, but things change, and with the addition of CEB Raptors and Maximus and some others, this has turned into a very serious little “Big Bore” cartridge, and the test work here is impressive to say the least.

We will start with the 160 CEB Raptors, and they are just wicked……… It has been a very long time since I have seen such massive, extreme, trauma in this test medium. These 160s are devastating at 2770 fps. Penetration of the base to 12 inches was right on par with what I had thought it would do, but I was not expecting such massive destruction of material………

I would not hesitate to use the 160s on animals up to 300 lbs or more. Zombies? Splattered……… Deer/pigs/bear, end of story………

DSCN4616-XL.jpg


DSCN4615-XL.jpg


IMG_4723-L.jpg


Moving to the 250 gr CEB Raptors Trauma is somewhat less, still substantial, far in excess of anything conventional of course, but some less than the 160 Raptors simply because of velocity, penetration is deeper with the larger remaining full diameter slug. For really big fat Zombies, this is the bullet, and of course animals bigger than standard deer/pigs/bear. Perhaps if I was on a bear mission, I would go with the 250 Raptors. This would also be suitable for much larger game in Alaska as well.

DSCN4618-XL.jpg


The 250 CEB Maximus is similar to all 1st Generation Copper Hollow Point Bullets, those early ones from Lehigh I used, and the current Hammer bullets. These blades peel and shear about the same as the Raptors, but instead of radiating away from center, these stay closer to center wound channel, and even then they are very devastating as well, I would say slightly less than the Raptors, but way more than anything else you can imagine. These are ready for the heaviest animals you would want to hunt with a 450 BM………..

DSCN4620-XL.jpg


Sam had some of those “Maker Bullets”, we tested a load with the 275 gr Version, we probably could up the velocity by a 100 fps or even more, but we tested at the first step with 2114 fps. These things are just wicked as well, I assume the copper has to be annealed since the petals/blades all stayed intact and did not shear….. reminds me of an octopus all stretched out. It produced extreme trauma as well ripping and tearing the medium to shreds. Penetration not as deep as the 250 Raptor or 250 Maximus, but would not expect it to be with the massive expansion…… This would be a Zombie ripper for sure……

DSCN4624-XL.jpg


DSCN4625-XL.jpg


DSCN4627-XL.jpg


DSCN4629-XL.jpg


Sam had some 395 Hornady Sub X loaded that we tested too, and result were interesting to say the least.. I would class these as a success for sub sonic.

DSCN4632-XL.jpg


DSCN4633-XL.jpg


And that is what we have so far………… I might try some standard Hornady bullets this coming week, and maybe even a Lehigh or two just to round things out………. But first I have to get some work done………….
That’s some awesome shit!. Mind if I borrow a handful to try in downtown Detroit? Might even save one to fire through your buddy Swanson’s house just for giggles on Halloween night!
 
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