450B vs 45-70 penetration

Talk about the AR15 style rifles chambered in 450 Bushmaster.

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450B vs 45-70 penetration

Postby Hopalong » Sun Nov 04, 2018 6:37 pm

I didn't see that this was posted previously, if so, my apologies. 300gr bullets in both...

https://www.youtube.com/watch?v=rDvUEIL0q64

Hop
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Re: 450B vs 45-70 penetration

Postby Hoot » Mon Nov 05, 2018 5:49 am

Hopalong wrote:I didn't see that this was posted previously, if so, my apologies. 300gr bullets in both...

https://www.youtube.com/watch?v=rDvUEIL0q64

Hop


First time I've seen that. Proof Positive. They both Thump!

Thanks for the link Hop. Did you get those Monolithic copper 250s dialed in?

Hoot
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Re: 450B vs 45-70 penetration

Postby Hopalong » Fri Nov 09, 2018 8:25 am

Hoot wrote:
First time I've seen that. Proof Positive. They both Thump!

Thanks for the link Hop. Did you get those Monolithic copper 250s dialed in?

Hoot


Not yet. This whole retirement thing makes me wonder how I had time to work. I've actually gone hunting, spent some time with the grandkids in various locations, just got back from my first trip to Zion and Bryce Canyon parks. Wearing me out...

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Re: 450B vs 45-70 penetration

Postby Buckeye45 » Fri Nov 09, 2018 8:47 pm

Good job Hop. I shoot hornady 300 jhp in my 45/70 Marlin SBL. Problem the rifle is a pig to carry and hunt with. I may have to swage some of these bullets down and try in my 450. Much better hunting gun.
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Re: 450B vs 45-70 penetration

Postby Hoot » Fri Nov 09, 2018 10:26 pm

Buckeye45 wrote:Good job Hop. I shoot hornady 300 jhp in my 45/70 Marlin SBL. Problem the rifle is a pig to carry and hunt with. I may have to swage some of these bullets down and try in my 450. Much better hunting gun.


Hornady sells a JHP for the 450b. Its the .452 300gr XTP Mag bullet. Much thicker walled than their non-Mag XTP. They also sell it in a 240gr. Al in Mi posted up an image of the Mag vs Regular, cross-sectioned bullets side by side just recently in This Thread.

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Re: 450B vs 45-70 penetration

Postby 303hunter » Sat Nov 10, 2018 10:18 am

Hoot wrote:
Buckeye45 wrote:Good job Hop. I shoot hornady 300 jhp in my 45/70 Marlin SBL. Problem the rifle is a pig to carry and hunt with. I may have to swage some of these bullets down and try in my 450. Much better hunting gun.


Hornady sells a JHP for the 450b. Its the .452 300gr XTP Mag bullet. Much thicker walled than their non-Mag XTP. They also sell it in a 240gr. Al in Mi posted up an image of the Mag vs Regular, cross-sectioned bullets side by side just recently in This Thread.

Hoot

It’s interesting that Hornady doesn’t include XTP Mag Bullets in their reloading data for the 450, but give data for the 300 Swift A Frame.
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Re: 450B vs 45-70 penetration

Postby Hopalong » Sun Nov 11, 2018 3:48 pm

Just got back from a local gun show. A northern CO outfit has set up a 45-70 caliber AR in an AR-10 chassis... He was claiming
4000 ft lb of muzzle energy. Nice looking setup, I'm sure fully customizable, etc. The case is modified to feed properly.

https://www.phoenixweaponry.com/45-70-auto
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