.300 BLK 220gr Flat Base Bullet

Bartholomew Roberts · May 19, 2017, 05:37 PM

What's the point of that? Is case capacity an issue in subsonic .300?

If you want to appreciate the ballistic edge of a boat tail, start plinking at targets 250yds away and get your Remington 220gr flatbase mixed up with your Sierra 220gr SMKs.

Mobuck · May 19, 2017, 08:45 PM

"What's the point of that? Is case capacity an issue in subsonic .300? "

Yes it is. ALL the loads I use for the 300 are heavily compressed. Actually no real advantage to using boat tail bullets since AAC isn't capable of velocities or ranges at which the BT would help.

Bartholomew Roberts · May 19, 2017, 08:53 PM

It is about 2 mils difference in elevation between the BTHP and the FB at 250yds, so I wouldn't say the boattail does nothing.

raimius · May 20, 2017, 09:16 AM

Considering the rainbow arc after about 120yds, I'm not really sure why you would want to shoot .300blk subs at 250...other than giggles...

Mobuck · May 20, 2017, 10:47 AM

"It is about 2 mils difference in elevation between the BTHP and the FB at 250yds, so I wouldn't say the boattail does nothing."
No, I don't consider "2 mils" to be a significant difference.

"Considering the rainbow arc after about 120yds, I'm not really sure why you would want to shoot .300blk subs at 250...other than giggles..."
Agree 100% unless you're in the business of certain types of quiet "pest" removal.

Bartholomew Roberts · May 20, 2017, 01:01 PM

Rainbow arc? It's a mere 70" drop from a 50yd zero for the SMK, and about 80" from the 220gr FB.

If you aren't going to shoot past 200yds, you might as well save yourself money and shoot 9mm subs. Or pretty much anything subsonic since they all have about the same trajectory out to 200yds.

The thrill of doping wind and precise range estimation without having to find a 600yd range.

raimius · May 21, 2017, 08:41 AM

Mine is zeroed at 14yds, so it starts to go well outside my 2moa red dot at about 115. Inside 100, it's decently flat.

May 19, 2017, 05:37 PM	#1
Bartholomew Roberts member Join Date: June 12, 2000 Location: Texas and Oklahoma area Posts: 8,462	.300 BLK 220gr Flat Base Bullet What's the point of that? Is case capacity an issue in subsonic .300? If you want to appreciate the ballistic edge of a boat tail, start plinking at targets 250yds away and get your Remington 220gr flatbase mixed up with your Sierra 220gr SMKs.

May 19, 2017, 08:45 PM	#2
Mobuck Junior member Join Date: February 2, 2010 Posts: 6,846	"What's the point of that? Is case capacity an issue in subsonic .300? " Yes it is. ALL the loads I use for the 300 are heavily compressed. Actually no real advantage to using boat tail bullets since AAC isn't capable of velocities or ranges at which the BT would help.

May 19, 2017, 08:53 PM	#3
Bartholomew Roberts member Join Date: June 12, 2000 Location: Texas and Oklahoma area Posts: 8,462	It is about 2 mils difference in elevation between the BTHP and the FB at 250yds, so I wouldn't say the boattail does nothing.

May 20, 2017, 09:16 AM	#4
raimius Senior Member Join Date: January 27, 2008 Posts: 2,199	Considering the rainbow arc after about 120yds, I'm not really sure why you would want to shoot .300blk subs at 250...other than giggles...

May 20, 2017, 10:47 AM	#5
Mobuck Junior member Join Date: February 2, 2010 Posts: 6,846	"It is about 2 mils difference in elevation between the BTHP and the FB at 250yds, so I wouldn't say the boattail does nothing." No, I don't consider "2 mils" to be a significant difference. "Considering the rainbow arc after about 120yds, I'm not really sure why you would want to shoot .300blk subs at 250...other than giggles..." Agree 100% unless you're in the business of certain types of quiet "pest" removal.

May 20, 2017, 01:01 PM	#6
Bartholomew Roberts member Join Date: June 12, 2000 Location: Texas and Oklahoma area Posts: 8,462	Rainbow arc? It's a mere 70" drop from a 50yd zero for the SMK, and about 80" from the 220gr FB. If you aren't going to shoot past 200yds, you might as well save yourself money and shoot 9mm subs. Or pretty much anything subsonic since they all have about the same trajectory out to 200yds. The thrill of doping wind and precise range estimation without having to find a 600yd range.

May 21, 2017, 08:41 AM	#7
raimius Senior Member Join Date: January 27, 2008 Posts: 2,199	Mine is zeroed at 14yds, so it starts to go well outside my 2moa red dot at about 115. Inside 100, it's decently flat.