GAP ammo in a 625?

[Grimlock]

I very recently traded for a 625-6. Thing looks like it is new. Anyway, I was told that in addition to 45acp I could also shoot 45GAP in it. I don't think I want to as it isn't very cost efficient but it got me to wondering can you?

If I understand it correctly the biggest difference in 45acp and 45gap is in the length. But I have also been told never to shoot 45gap in something 45acp. So, I was wondering just for the sake of knowing. Can you?

 

[Bullseye Smith]

But I have also been told never to shoot 45gap in something 45acp. So, I was wondering just for the sake of knowing. Can you?

That is true for a auto, but with moons clips you will be A OK.

 

[Grimlock]

That is true for a auto, but with moons clips you will be A OK.

Ok, thanks for the info.

 

[sheriffoconee]

I moonclip GAP ammo in my 22-4 on a regular basis....
Shoots great. Load with confidence.

 

[Grimlock]

Thanks for the info fellas

 

[valkyriekl]

Yup, I've done it. No issues. I've done something similar with a Taurus 905 9mm snubby revolver and .380 ammo -- same deal: it worked OK.

 

[kscardsfan]

Just for my curiousity, why can't you do it in an auto, but you can in a revolver? Is it cause of the headspacing or what?

 

[valkyriekl]

Just for my curiousity, why can't you do it in an auto, but you can in a revolver? Is it cause of the headspacing or what?

That's it exactly: the .45GAP ammo was developed by Glock to produce a double-stack .45 that had a similar grip radius as their 9mm and .40 pistols. The round is dimensionally similar to .45ACP except for the brass length: the .45GAP round is shorter (also, it uses a small pistol primer, whereas the .45ACP uses a large pistol primer). Both rounds headspace on the case mouth, so using the shorter .45GAP round in a pistol designed to chamber .45ACP will mean that the base of the casing will be too far from the breech face of the chamber, and the firing pin will not reach it (unless you get lucky and have the round slip under the extractor claw while chambering).

.45GAP also operates at a higher pressure than .45ACP, and that could be an issue as well.

 

[hf1960]

Thats what I like about the 625. .45ACP/.45 Super/.45AR/.45GAP. Shoots them all....

 

[MTKTM]

......but why would you want to? I suppose if you had a supply of GAP on hand, but can't imagine that is true for very many.

 

[valkyriekl]

......but why would you want to? I suppose if you had a supply of GAP on hand, but can't imagine that is true for very many.

I've heard of IPSC/race-gun shooters using them for slightly faster reloads.