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General Forums => Wishlist => Topic started by: RogolloWing on September 22, 2011, 10:22:26 AM

Title: Armor Piercing 75mm shells for B25H
Post by: RogolloWing on September 22, 2011, 10:22:26 AM
I have hit GV's dead on with a 75MM HE from 600 out (point blank) and done no apparent damage.    Yes, I sometimes get the assist, but I would have expected more.

Would it be possible to select AP in the hangar?  Ideally, some mix of both (14 HE & 7 AP)?
Title: Re: Armor Piercing 75mm shells for B25H
Post by: Soulyss on September 22, 2011, 10:38:08 AM
It's been wished for, a search may dig up one of the old threads.  If it's something you're interested in I would try and do a little research and find documentation that a mixed load of ammunition was in fact carried and used.  Considering the typical targets the cannon equipped B-25's were sent out to hit HE would have likely been far, far more common.

As always I'm happy to be proven wrong. :)
Title: Re: Armor Piercing 75mm shells for B25H
Post by: Volron on September 22, 2011, 01:07:02 PM
May want to readjust your attack angle.  I have no problems knocking out Panzer's, FlaK's and M4's with it.

I think someone posted that they possibly carried 16/5 HE/AP in a different thread. :headscratch:  But wishing for AP simply because, really won't fly.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: gyrene81 on September 22, 2011, 02:11:34 PM
 :headscratch:  scouring the web and even looking in the library, couldn't find any reference to what specific types of rounds the g or h models carried. one reference said with a carefully placed round a destroyer could be sunk. can only assume that the powder magazine or fuel tanks would be the target using he rounds. everything else says the targets were usually stationary ground targets where high explosive would be the round of choice.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: wil3ur on September 22, 2011, 08:49:02 PM
As said previously, adjust your angle of attack, and learn weakpoints of tank armor.  I have better luck killing GV's with the 25H than I do in another GV as far as Hit to Kill % of rounds.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: W7LPNRICK on September 22, 2011, 10:40:11 PM
:headscratch:  scouring the web and even looking in the library, couldn't find any reference to what specific types of rounds the g or h models carried. one reference said with a carefully placed round a destroyer could be sunk. can only assume that the powder magazine or fuel tanks would be the target using he rounds. everything else says the targets were usually stationary ground targets where high explosive would be the round of choice.

I used to sink destroyers all the time with7 hits I think...?  :airplane:
Title: Re: Armor Piercing 75mm shells for B25H
Post by: Volron on September 25, 2011, 03:49:50 AM
For Panzer's and M4's, come in high and from the rear and put the round just behind the turret.  Can get them in 1-2 shots that way.  Just be wary as the 25 doesn't like coming out of a dive all that well.  Flaks are tricky for obvious reasons; 1) You are a BIG target, and 2) They can get you from any angle.  The idea against flaks is to take long range shots at them from the sides.  Will usually track them and/or turret them with a hit.  After that, coming in from behind will be the finishing blow (though taking more flank shots will provide you with more of a target).  First and foremost, try to turret them, then hope they don't have sups near by when you move in for the kill.  The most common flak you'll encounter are Wirblewinds, so you'll be able to safely hit them from outside their range (just takes a little practice with aim).  It's the Ostwinds you have to worry about.  Their 37mm isn't that accurate, but you are a big enough target that it won't be too much of an issue (unless they are just out right horrid in aim).  T-34's are a little tricky due to their sloped armor.  I find it easier to track them first, then put a round into the spot just behind their turret.  I haven't encountered any Panther's, Tiger's or King Tiger's while flying the 25, though the Panther will be the easiest of the 3.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: wil3ur on September 25, 2011, 09:43:44 AM
I've gotten panthers with top shots (45deg+) towards the rear of their turret... not sure if it'll be as soft on other tanks.  B25'll pull out of high angle dives fine, just chop engines completely before dive.  This will also make it a bit more stable for shooting.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: pembquist on September 25, 2011, 03:34:56 PM
how high do you start your dive on a gv in b25?
Title: Re: Armor Piercing 75mm shells for B25H
Post by: skorpion on September 25, 2011, 07:47:30 PM
how high do you start your dive on a gv in b25?


you will want to start it at about 1.5-2k. that gives you more time to set up a shot and isnt to big a deal with the pull-out.

ill have some pics up later for this.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: wil3ur on September 26, 2011, 10:48:42 PM
you will want to start it at about 1.5-2k. that gives you more time to set up a shot and isnt to big a deal with the pull-out.

ill have some pics up later for this.

About right, I usually fly about 3K over the battlefield and throttle back before I pull up over target, bleeds forward momentum, slows plane for pull out, and keeps you above the guns of those pesky M4 and T34 pilots who like to main gun you.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: skorpion on September 27, 2011, 07:06:36 AM
About right, I usually fly about 3K over the battlefield and throttle back before I pull up over target, bleeds forward momentum, slows plane for pull out, and keeps you above the guns of those pesky M4 and T34 pilots who like to main gun you.
ive had more deaths at 1.5k from M16's than t34's/M4's :lol

but if you keep on getting ricochets on those tanks just shoot right next to the track. HE doesnt have to penetrate to do damage, just land close.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: wil3ur on September 27, 2011, 10:16:22 AM
ive had more deaths at 1.5k from M16's than t34's/M4's :lol

but if you keep on getting ricochets on those tanks just shoot right next to the track. HE doesnt have to penetrate to do damage, just land close.

M16 is soft enough you should be killing that thing long before you get in its guns range.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: skorpion on September 27, 2011, 03:51:35 PM
M16 is soft enough you should be killing that thing long before you get in its guns range.
1.5k is the max effective range on a m16. not to mention those bastages always aim for the cockpit when shooting at a b25. :mad:
Title: Re: Armor Piercing 75mm shells for B25H
Post by: Ack-Ack on September 27, 2011, 06:04:51 PM
1.5k is the max effective range on a m16. not to mention those bastages always aim for the cockpit when shooting at a b25. :mad:

You can take out a M16 in a B-25H from 3,000+ yards out if you have a good enough sight.

ack-ack
Title: Re: Armor Piercing 75mm shells for B25H
Post by: skorpion on September 27, 2011, 06:07:00 PM
You can take out a M16 in a B-25H from 3,000+ yards out if you have a good enough sight.

ack-ack
i have the sight to do it, its the aim i dont have :lol

im not good with keeping a big fat bird steady in a dive trying to hit a small target at 3k.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: wil3ur on September 27, 2011, 08:54:12 PM
i have the sight to do it, its the aim i dont have :lol

im not good with keeping a big fat bird steady in a dive trying to hit a small target at 3k.

Try throttling back before you nose over, the plane is a very stable platform without the engines torquing and vibrating away.  If you're doing a long range shot in level flight... same thing.  Use your rudder for minute changes to your L/R aim as opposed to trying to bank turn also...
Title: Re: Armor Piercing 75mm shells for B25H
Post by: E25280 on September 27, 2011, 09:26:10 PM
I haven't encountered any Panther's, Tiger's or King Tiger's while flying the 25, though the Panther will be the easiest of the 3.
Tiger I's are no problem.  Not sure about IIs.

Hope these still work.  Bronk proving the 75mm HE round is sufficient to pop a Tiger with one shot.

http://www.mediafire.com/?ynzmjjfnweh
http://www.mediafire.com/?44gz6y3kcb3
Title: Re: Armor Piercing 75mm shells for B25H
Post by: skorpion on September 27, 2011, 09:28:19 PM
Tiger I's are no problem.  Not sure about IIs.

Hope these still work.  Bronk proving the 75mm HE round is sufficient to pop a Tiger with one shot.

http://www.mediafire.com/?ynzmjjfnweh
http://www.mediafire.com/?44gz6y3kcb3
ive turreted a Tiger 1 before with my B25. wasnt able to finish it off due to some unexpected 262's...:noid

if your trying to kill a tiger 2, good luck. thats damn near impossible unless every one of your shots is directly under the tank where HE actually does damage.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: E25280 on September 27, 2011, 09:29:59 PM
:headscratch:  scouring the web and even looking in the library, couldn't find any reference to what specific types of rounds the g or h models carried. one reference said with a carefully placed round a destroyer could be sunk. can only assume that the powder magazine or fuel tanks would be the target using he rounds. everything else says the targets were usually stationary ground targets where high explosive would be the round of choice.
The torpedo tubes would probably be the best bet to set off a secondary explosion sufficient to sink a destroyer.
Title: Re: Armor Piercing 75mm shells for B25H
Post by: Soulyss on September 27, 2011, 11:15:51 PM
I think the B-25H would run into problems when attacking warships, it was the same issue that it had attacking ground installations but may be been more pronounced.  The problem was the low rate of fire of the 75mm gun wasn't enough to suppress the return fire.  When the strafer B-25's went in the guns upfront weren't necessarily meant to inflict a lot of damage although they certainly could depending on the target.  They're primary function was to keep the anti aircraft gunners heads down so they couldn't shoot back.   The real damage was done from the dropped ordnance, whether it was fragmentation bombs across the dispersal areas of an airfield or skipping a 500lber into the side of a ship.

The other problem with the low rate of fire was that B-25 to start it's run from higher and further out which made it a bigger target. 
Title: Re: Armor Piercing 75mm shells for B25H
Post by: Ack-Ack on September 28, 2011, 03:07:40 AM
I think the B-25H would run into problems when attacking warships, it was the same issue that it had attacking ground installations but may be been more pronounced.  The problem was the low rate of fire of the 75mm gun wasn't enough to suppress the return fire.  When the strafer B-25's went in the guns upfront weren't necessarily meant to inflict a lot of damage although they certainly could depending on the target.  They're primary function was to keep the anti aircraft gunners heads down so they couldn't shoot back.   The real damage was done from the dropped ordnance, whether it was fragmentation bombs across the dispersal areas of an airfield or skipping a 500lber into the side of a ship.

The other problem with the low rate of fire was that B-25 to start it's run from higher and further out which made it a bigger target. 

This is the pilot handbook for the B-25C/F/G/H/J, read page 168 and you'll see the tactic they employed to overcome the challenges you pointed out.

B-25 Pilot Handbook (http://www.mediafire.com/?oem444j3244rdt5)

ack-ack
Title: Re: Armor Piercing 75mm shells for B25H
Post by: Soulyss on September 28, 2011, 11:08:41 AM
Thanks for the link I'll take a look but I don't think they were ever able to completely overcome the issues.  The three most common statements I read about in regard to the shortcomings of the 75mm cannon are a lack of suitable targets and the two I already mentioned mentioned, the 75mm gun didn't suppress the defensive fire and if they wanted to fire more than one shell on each run in they had to fly too high and too straight for too long.  

I want to add that most of my readings on this subject come from the 5th Air Force where the gun was not popular, after combat trials most of the cannon were removed and replaced with 50's.  It's possible that it was more popular in other theaters where my little library here is thinner on subject matter.

*edit*

I did find some info on the B-25G's that served with the 310th BG, looks like they received them in November 1943 but they were phased out by May 1944 in favor of the new J models.


*edit again*
Back to the OP I did find a couple references to armor piercing rounds being carried in the Osprey Combat Aircraft series "B-25 Mitchell Units of The MTO". 

on Page 44
Quote
Those 75mm cannon rounds were 26 inches long and weighed some 20lbs each.  Just abouve the cannon breech was a rack that held 20 rounds.  We carried mostly high explosive warhead rounds with a few armour-piercing shells thrown in for good measure just in case we met one or more of the dreaded German destroyers prevalent in the area.

This was S/SGt Underwood of the 310th BG.

The 321st used the G models as well, the following comments are from T/Sgt Jon Jarvis who was a radioman with the 445th.
from Page 67

Quote
I was never in an attack at sea, but against Panzers it was rare that we got off two rounds.  But one round usually did the trick, with pieces of the tank flying high into the air.  When shaped -charge shells like those 75mm brutes we used hit a tank, it blew it up from the inside out.