.45ACP (+P) ammo, dealer told me NO - Page 4 - XDTalk Forums - Your HS2000/SA-XD Information Source!

pleasantguywhopacksAXD · 03-14-2008, 11:16 PM

Here is an LE ballistics compairison calculator.
LE - Pistol

pick a Federal bullet brand and compair.
Its going to show basically 100 ftpounds differnce between 9mm and 45 acp as a general rule, and 50 ftpounds difference between standard and +p in each calibers with the same grain bullet.

joe4570 · 03-18-2008, 06:09 AM

Approximate MAP as listed -

45 ACP, 21,000 PSI
45 ACP +P, 23,000 PSI
45 Super 28,000 PSI
460 Rowland 40,000 PSI

If the case is fully supported by the chamber walls, the issue is dampening the slide travel to retard increased slide velocity to prevent serious frame and slide damage and if the frame is up to handling the additional loads. The 460 Rowland is a slightly longer case than the 45 ACP but a conversion on a 45 ACP gun. I just noted it to show the pressure a supported but standard barrel wall can handle as long as the slide velocity is managed and the frame is up to the task. The +P increase is, as said by others, not very signficant.

jigman586 · 03-18-2008, 08:40 PM

remunds me of once when i went into a local shop asking about a Savage Weather warrior bolt gun in a specific caliber.the idiot squinched his eyes together like he was thinking and then says to me" i dont think they make one like that" get the hek out a here! is what i thought.I had just saw the rifle in a mag ad same day. Always an idiot in the local shop( or a loud mouth obnoxius jerk who knows it all).

03-14-2008, 11:16 PM	#31
pleasantguywhopacksAXD XDTalk 100 Member Join Date: Feb 2008 Location: Blanchester, Ohio Posts: 414	Here is an LE ballistics compairison calculator. LE - Pistol pick a Federal bullet brand and compair. Its going to show basically 100 ftpounds differnce between 9mm and 45 acp as a general rule, and 50 ftpounds difference between standard and +p in each calibers with the same grain bullet. __________________ Member OFCC, Life Member NRA ʞɔns sʞɔolƃ WARNING: The FDA requires all those using glocks that side effects may include: A rose colored appearance of your surroundings. Voices telling them they are invincible. A uncontrolable urge to smash, poke, prod, wet,salt, bury and drop from low flying aircraft said glock, then need to brag uncontrollably. Last edited by pleasantguywhopacksAXD; 03-14-2008 at 11:20 PM.

03-18-2008, 08:40 PM	#33
jigman586 XDTalk 100 Member Join Date: Mar 2006 Location: Georgia(Southernhalf) Posts: 273	remunds me of once when i went into a local shop asking about a Savage Weather warrior bolt gun in a specific caliber.the idiot squinched his eyes together like he was thinking and then says to me" i dont think they make one like that" get the hek out a here! is what i thought.I had just saw the rifle in a mag ad same day. Always an idiot in the local shop( or a loud mouth obnoxius jerk who knows it all). __________________ "You tellem im comin' and hells comin' with me!!"-Wyatt Earp; Tombstone

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03-18-2008, 06:09 AM	#32
joe4570 XDTalk Newbie Join Date: Feb 2008 Posts: 2	Approximate MAP as listed - 45 ACP, 21,000 PSI 45 ACP +P, 23,000 PSI 45 Super 28,000 PSI 460 Rowland 40,000 PSI If the case is fully supported by the chamber walls, the issue is dampening the slide travel to retard increased slide velocity to prevent serious frame and slide damage and if the frame is up to handling the additional loads. The 460 Rowland is a slightly longer case than the 45 ACP but a conversion on a 45 ACP gun. I just noted it to show the pressure a supported but standard barrel wall can handle as long as the slide velocity is managed and the frame is up to the task. The +P increase is, as said by others, not very signficant.