I have thought about doing a 221 Fireball shooting 75gr A-maxes in an AR. Anyone running one? It would be mag friendly for sure.
Why not a 221 Fireball in AR?
- Thread starter excaliber
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Re: Why not a 221 Fireball in AR?
Whats the gain over 223? If you are building it, 223 ARs can be set up to run the 75 A-Max very effective.
Whats the gain over 223? If you are building it, 223 ARs can be set up to run the 75 A-Max very effective.
Re: Why not a 221 Fireball in AR?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: excaliber</div><div class="ubbcode-body">That`s right but in single shot mode only correct? </div></div>
Wrong. You can load mag-length 75gr (and 77gr) projectiles for the .223/5.56. Get a barrel with at least a 1:8 twist or faster and bang away.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: excaliber</div><div class="ubbcode-body">That`s right but in single shot mode only correct? </div></div>
Wrong. You can load mag-length 75gr (and 77gr) projectiles for the .223/5.56. Get a barrel with at least a 1:8 twist or faster and bang away.
Re: Why not a 221 Fireball in AR?
I know where a Predator Customs 223 AR is that runs the 75 a max and the 77 sierras well at mag length.Its on a 7 twist though.
I know where a Predator Customs 223 AR is that runs the 75 a max and the 77 sierras well at mag length.Its on a 7 twist though.
Re: Why not a 221 Fireball in AR?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ORD</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: excaliber</div><div class="ubbcode-body">That`s right but in single shot mode only correct? </div></div>
Wrong. You can load mag-length 75gr (and 77gr) projectiles for the .223/5.56. Get a barrel with at least a 1:8 twist or faster and bang away. </div></div>
This is true,except for the 75gr Amax...the bullet design won't allow very much,if any, neck tension when seated to mag length in a 223/5.56mm AR15.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ORD</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: excaliber</div><div class="ubbcode-body">That`s right but in single shot mode only correct? </div></div>
Wrong. You can load mag-length 75gr (and 77gr) projectiles for the .223/5.56. Get a barrel with at least a 1:8 twist or faster and bang away. </div></div>
This is true,except for the 75gr Amax...the bullet design won't allow very much,if any, neck tension when seated to mag length in a 223/5.56mm AR15.
Re: Why not a 221 Fireball in AR?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SANDRAT</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ORD</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: excaliber</div><div class="ubbcode-body">That`s right but in single shot mode only correct? </div></div>
Wrong. You can load mag-length 75gr (and 77gr) projectiles for the .223/5.56. Get a barrel with at least a 1:8 twist or faster and bang away. </div></div>
This is true,except for the 75gr Amax...the bullet design won't allow very much,if any, neck tension when seated to mag length in a 223/5.56mm AR15. </div></div>
Yep, the ogive side of the baring surface of the bullet is below the end of the neck at 2.230".
The Hornady 75gr HPBT is designed for mag feeding out of a AR.
221FB is a novel idea out of a AR but the loss of velocity at mag length with heavy bullets won't be worth the trade off.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SANDRAT</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ORD</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: excaliber</div><div class="ubbcode-body">That`s right but in single shot mode only correct? </div></div>
Wrong. You can load mag-length 75gr (and 77gr) projectiles for the .223/5.56. Get a barrel with at least a 1:8 twist or faster and bang away. </div></div>
This is true,except for the 75gr Amax...the bullet design won't allow very much,if any, neck tension when seated to mag length in a 223/5.56mm AR15. </div></div>
Yep, the ogive side of the baring surface of the bullet is below the end of the neck at 2.230".
The Hornady 75gr HPBT is designed for mag feeding out of a AR.
221FB is a novel idea out of a AR but the loss of velocity at mag length with heavy bullets won't be worth the trade off.
Re: Why not a 221 Fireball in AR?
Whooops. That's my bad in offering up advice without reading more carefully...I overlooked the AMAX portion of the post. Sorry about any confusion. Yep...the 75gr AMAX is likely to cause you problems with proper functioning from an AR-15 when seated at mag length (unless single-fed of course).
I run the 77gr SMKs personally and have had outstanding accuracy with them from all of my ARs, including at extended ranges.
Whooops. That's my bad in offering up advice without reading more carefully...I overlooked the AMAX portion of the post. Sorry about any confusion. Yep...the 75gr AMAX is likely to cause you problems with proper functioning from an AR-15 when seated at mag length (unless single-fed of course).
I run the 77gr SMKs personally and have had outstanding accuracy with them from all of my ARs, including at extended ranges.
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