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Custom 20BR project using 55 grain Bergers.

 
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  #1  
Old 10-27-2011, 07:31 AM
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Posts: 158
Custom 20BR project using 55 grain Bergers.

I am currently researching the 20BR with the intention of having a custom single shot rifle built. On paper it has very impressive ballistics with the high BC long range 55 grain Berger varmint bullet. However, me being the eternal cynic I am not inclined to believe everything I read and would like to hear from anyone with experience in this caliber using this bullet.

Alternatively I was thinking of going down the TAC20 route with the same bullet.

The ballistic performance of the 2 calibers with the 55 grain Berger long range varmint can be seen below compared to the .223rem using the 55 grain Sierra Blitzkings.



When you compare the 20BR and TAC20 to the 223Rem they both outperform it by a long way at extended ranges on paper.

What first hand experiences do you have with this bullet in these calibers.

I want to use this rifle for 200-600yds varminting.

Another issue I would like to hear your views on is the recoil from a 20BR compared to the 223Rem. I have down sized from the .243win to .223Rem for varminting and I enjoy watch the hits though the scope which I was unable to do with the .243win.

Do you get much more recoil with the .20BR over the .223Rem and would I still get to to see the hits through the scope?

Last edited by robbobsam; 10-27-2011 at 09:41 AM.
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  #2  
Old 10-27-2011, 08:29 AM
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Join Date: Nov 2008
Location: Central Pennsylvania
Posts: 4,072
Re: Custom 20BR project using 55 grain Bergers.

Hey Rob,
Don't have any experience, but have you looked at this:

20 Caliber Cartridge Guide within AccurateShooter.com

I found this really helpful when I was researching .20 cals. I really like the idea of the 20 Practical (223 necked down to .204). Why are you looking at 20's with the new 223AI working well?

Tank
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Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger

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  #3  
Old 10-27-2011, 09:01 AM
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Join Date: Jun 2010
Posts: 158
Re: Custom 20BR project using 55 grain Bergers.

Quote:
Originally Posted by liltank View Post
Hey Rob,
Don't have any experience, but have you looked at this:

20 Caliber Cartridge Guide within AccurateShooter.com

I found this really helpful when I was researching .20 cals. I really like the idea of the 20 Practical (223 necked down to .204). Why are you looking at 20's with the new 223AI working well?

Tank
Hiya Tank,

Good to hear from you again, when you gonna cross the pond and come shooting with me then?

As for the 20BR I have too much money spare and too much free time.

The 20BR is going to be my next project.

Keep in touch buddy !!!
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  #4  
Old 10-27-2011, 09:04 AM
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Join Date: Nov 2008
Location: Central Pennsylvania
Posts: 4,072
Re: Custom 20BR project using 55 grain Bergers.

Quote:
Originally Posted by robbobsam View Post
Too much money and free time. The 20BR is going to be my next project.
I wish I had the too much money problem! In case you should feel the need to share.... look me up! Sounds like a cool project. Can't wait to see the end result.

Tank
__________________
Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger

Friends don't let friends develop canonitis!-chucknbach

arguing over the internet is like the special Olympics....even if you win, you are still...special!
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  #5  
Old 10-27-2011, 09:07 AM
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Join Date: Aug 2011
Location: Lynchburg, TN
Posts: 737
Re: Custom 20BR project using 55 grain Bergers.

How do the 20s compare with the 223 shooting a 55gr. bullet like you're shooting in the 20s. Seems like you're comparing apple to oranges. I would expect a 55 gr. bullet to outperform a 40 gr. and close to the same velocity.
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  #6  
Old 10-27-2011, 09:19 AM
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Join Date: Nov 2008
Location: Central Pennsylvania
Posts: 4,072
Re: Custom 20BR project using 55 grain Bergers.

The break down:

20 cal Berger 55= .381
.224 cal 55 V-max= .255
53 V-max= .290
Sierra 55 Blitz King= .271

To get equivalant BC of the Berger 55 you need the following:

77grn SMK .371
68grn Hornady BTHP .355
77grn Berger BT Match .376

Your getting the picture here I'm sure. You have to go to a substantially heavier bullet for caliber in the .223 to achieve the same level of the performance of the 20BR with a 55grn bullet. Not to mention the 20 cal is going to be moving at a much higher velocity.

Tank
__________________
Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger

Friends don't let friends develop canonitis!-chucknbach

arguing over the internet is like the special Olympics....even if you win, you are still...special!
Reply With Quote
  #7  
Old 10-27-2011, 09:23 AM
Platinum Member
 
Join Date: Nov 2008
Location: Central Pennsylvania
Posts: 4,072
Re: Custom 20BR project using 55 grain Bergers.

Quote:
Originally Posted by robbobsam View Post
Hiya Tank,

Good to hear from you again, when you gonna cross the pond and come shooting with me then?

As for the 20BR I have too much money spare and too much free time.

The 20BR is going to be my next project.

Keep in touch buddy !!!
Well our debt is maxed at the moment. We bought a camper, pontoon boat, and still trying to pay off my flop of a truck purchase. My student loans kick in this next month. Sooooooo..... we need to get some debt payed down. I can tell you that I think about it often. I would love to come over and do some rabbit culling with ya. Muntjac's sound cool too! Of course the almighty red fox would be cool too. Hopefully we can get about 60% of our debt wiped out in the next couple years. I haven't forgotten about you buddy! I'll get there eventually.

Tank
__________________
Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger

Friends don't let friends develop canonitis!-chucknbach

arguing over the internet is like the special Olympics....even if you win, you are still...special!
Reply With Quote
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