Magtech 225g Copper HP

Talk about your 450b reloading experience, ask questions, etc...

Moderator: MudBug

Forum rules
Please try and keep it safe!

This information is the responsibility of the community, not the forum. 450bushmaster.net is not responsible if you blow yourselves up.

Re: Magtech 225g Copper HP

Postby cwlongshot » Thu May 02, 2019 10:58 am

I measured them and mine are coming in @ 451.5. Id like to see them 452 as advertised.

Speer 300’s also come in at 451.5. But they seem to shoot fine.

I have t shot them yet, but plan to get some ladders loaded with AA#9 a d find out! #9 has been very accurate in every lighter weight bullet I have tried.

CW
cwlongshot
 
Posts: 140
Joined: Tue Apr 24, 2018 11:48 am

Re: Magtech 225g Copper HP

Postby Hoot » Thu May 02, 2019 9:32 pm

cwlongshot wrote:I measured them and mine are coming in @ 451.5. Id like to see them 452 as advertised.

Speer 300’s also come in at 451.5. But they seem to shoot fine.

I have t shot them yet, but plan to get some ladders loaded with AA#9 a d find out! #9 has been very accurate in every lighter weight bullet I have tried.

CW


I've tried several powders in the lighter bullets but never AA9 because it peaks too fast. Case in point:
AR15 Platform, 20" 1:24, Speer 200 TMJ (upcoming range report), 2.06 COL (bullet .25 into case)
36.2gr AA9, 38.8k psi (max SAAMI=39,1k), 2401 fps, 74% case fill
44.7gr Lil Gun, 38.9k psi (max SAAMI=39,1k), 2578 fps, 94% case fill
Lil Gun fills the case more and nets 175 more fps for close to the same pressure. I like using up as much of the case capacity as is reasonable.
I realize how well the bullet flies is important. I'll get some first hand experience when I get out with my loads, possibly this Saturday.

Hoot
In Theory, there is no difference between theory and practice. In Practice, there is.
User avatar
Hoot
 
Posts: 4455
Joined: Tue Feb 09, 2010 9:34 am
Location: Minnesota

Re: Magtech 225g Copper HP

Postby cwlongshot » Fri May 03, 2019 5:04 am

Hoot,
I don't always build my loads for top velocity or pressure...

These bullets are perfect example for that. The 450 has more horsepower than these bullets will likely handle. So pushing them up to say 2600 that should be attainable is a fruitless endeavor...

With these and the 225FTX that I worked up accuracy loads with where loaded to accuracy peak. Ill load these to under 2K or about the top of what the 454 can/could do.

I wont use lil gun at all, talk about peaking/pushing pressures!! :shock: :shock: :shock: :roll:

CW
cwlongshot
 
Posts: 140
Joined: Tue Apr 24, 2018 11:48 am

Previous

Return to Reloading for the 450b

Who is online

Users browsing this forum: No registered users and 8 guests