Does the Pro Carry II in .45 acp have a ramped barrel?
Ramped barrel
redhawk
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In regard to ramped barrels, here's a graphic that shows the differences in design of both types just for giggles.
But I'll just add that in .45ACP, a ramped barrel is not required nor wanted. JMB designed it perfectly. Good idea if shooting 38 Super or other high pressure pistol rounds though for better case support.
But I'll just add that in .45ACP, a ramped barrel is not required nor wanted. JMB designed it perfectly. Good idea if shooting 38 Super or other high pressure pistol rounds though for better case support.
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Rick, do you think the ramp in a .45 (Ultra Carry specifically) could be responsible for chronic FTF's? If all other components have been eliminated (i.e. replaced) as contributing factors? I infer that it's possible, but in your experience is it likely?In regard to ramped barrels, here's a graphic that shows the differences in design of both types just for giggles.
But I'll just add that in .45ACP, a ramped barrel is not required nor wanted. JMB designed it perfectly. Good idea if shooting 38 Super or other high pressure pistol rounds though for better case support.
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My very first Ultra (a 45) had a lot of FTF when I first got it. Upon inspection, I fou that the back of the chamber where it met the ramp was very square, with no radius at all! Should have sent it back to the mothership, but decided to try it myself. Afters some very judicious filing and polishing, it’s been 100% reliable!!! I hope the pics come through in the right order, so here’s a before and after! It would be worth looking at!
Best of luck!
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I don't even pretend to be an expert. More of a student trying to learn. That's why i've been following this very interesting thread. Lots of great input.
it!
@Rick in Oregon pointed out how i became familiar with ramped barrels. A JIM CLARK customized 38super race gun to safely handle the hotter loads.
It seems the use of ramped barrels has been expanded by many manufacturers for other reasons.
I THINK the use of a ramped barrel is most often used in 9mm to compensate for the ill fit of that cartridge in the 1911. Not an issue of bias. Simply a problem of geometry. The ramped barrel assists in the proper feed.
JMB designed the 1911 45acp with a 5'' barrel. It was sucessful with a 4''. But many well respected experts believed a 3'' version could never be made reliable.
What do y'all think?
Is the ramped barrel a major key as to how Kimber has sucessfully made the ''impossible'' 3 inch barrel reliable?
These are just my thoughts and not presented as fact(s).
CROW, Think you've nailed
it!
@Rick in Oregon pointed out how i became familiar with ramped barrels. A JIM CLARK customized 38super race gun to safely handle the hotter loads.
It seems the use of ramped barrels has been expanded by many manufacturers for other reasons.
I THINK the use of a ramped barrel is most often used in 9mm to compensate for the ill fit of that cartridge in the 1911. Not an issue of bias. Simply a problem of geometry. The ramped barrel assists in the proper feed.
JMB designed the 1911 45acp with a 5'' barrel. It was sucessful with a 4''. But many well respected experts believed a 3'' version could never be made reliable.
What do y'all think?
Is the ramped barrel a major key as to how Kimber has sucessfully made the ''impossible'' 3 inch barrel reliable?
These are just my thoughts and not presented as fact(s).
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hang, as I've not had any issues with my Ultra CDP .45 with the ramped barrel, I don't think I'm qualified to answer, but it is of course entirely possible that the very square corners of the barrel chamber mouth may be too severe. A light buff with a Dremel and Flitz to break those sharp edges and make them just a bit more rounded/radiused for ease of entry usually helps as stockmaker mentions above. I've noticed that my best feeding guns all have this feature, usually from the factory when done properly as they all should be. The pic I posted in this thread shows what I'm trying to convey in that regard. A light touch is best here.
Rusty, good points above, and the issue of a reliable 3" 1911, regardless of caliber is both geometry and timing. Correct springs were part of the fix also. Colt was first with the Officers Model (had one) but it would only feed FMJ. For a few years no one offered a 3" that worked reliably with JHP's, and believe me, many besides myself were looking. I have a very good article written by those involved in the 3" 1911 project from Ruger that explains it in detail. I'll dig about to see if I can find it. It appeared in one of those 1911 Annuals a few years back.
But there's little doubt a ramped barrel is critical in the 1911 when in 9mm. And consider the non-1911 JMB designed BHP with its ramped barrel.....known for reliability (albeit in 9mm).
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hangtree, take a look at your cartridges after they have experienced a FTF. That’s what led me to the cure for my Ultra. I found two tiny nicks in the case mouth, spaced out right where the edge of the ramp met the chamber. The second and third Ultra that I have acquired had these areas well rounded and have never had a hiccup!
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Stock - you're the first person on this forum to offer something credible in terms of diagnosis, and the first not to immediately puff up their chest like a rooster and crow "Shooter Error"!
I'll get to the range and follow-up on your suggestion, maybe with pix. I love this gun, except for its susceptibility to 'shooter error'. It's designed to be carried, so I'd expect it to be robust and reliable in most shooters' hands under high stress circumstances, but that's a point of view that is mostly dismissed.
Thanks again for your cogent and insightful comments.
I'll get to the range and follow-up on your suggestion, maybe with pix. I love this gun, except for its susceptibility to 'shooter error'. It's designed to be carried, so I'd expect it to be robust and reliable in most shooters' hands under high stress circumstances, but that's a point of view that is mostly dismissed.
Thanks again for your cogent and insightful comments.
@Rick in Oregon pointed out how i became familiar with ramped barrels. A JIM CLARK customized 38super race gun to safely handle the hotter loads.
It seems the use of ramped barrels has been expanded by many manufacturers for other reasons.
I THINK the use of a ramped barrel is most often used in 9mm to compensate for the ill fit of that cartridge in the 1911. Not an issue of bias. Simply a problem of geometry. The ramped barrel assists in the proper feed.
JMB designed the 1911 45acp with a 5'' barrel. It was sucessful with a 4''. But many well respected experts believed a 3'' version could never be made reliable.
What do y'all think?
Is the ramped barrel a major key as to how Kimber has sucessfully made the ''impossible'' 3 inch barrel reliable?
These are just my thoughts and not presented as fact(s).
[/QUOTE]
the Colt Series 80 LW Officers model is a 3-1/2” barrel and the only problem i ever had with it was with the recoil spring capture plug and the stupid lug on it. lug sheers off and plug goes down range leaving a limp dangling spring hanging from the front of the frame. I like to call it LDS, limp dick syndrome. Wilson Combat put in a full length recoil spring guide a plug the is now captured like JMB meant it to be. Runs fine. It has a ramped frame.
![Image]()
It seems the use of ramped barrels has been expanded by many manufacturers for other reasons.
I THINK the use of a ramped barrel is most often used in 9mm to compensate for the ill fit of that cartridge in the 1911. Not an issue of bias. Simply a problem of geometry. The ramped barrel assists in the proper feed.
JMB designed the 1911 45acp with a 5'' barrel. It was sucessful with a 4''. But many well respected experts believed a 3'' version could never be made reliable.
What do y'all think?
Is the ramped barrel a major key as to how Kimber has sucessfully made the ''impossible'' 3 inch barrel reliable?
These are just my thoughts and not presented as fact(s).
[/QUOTE]
the Colt Series 80 LW Officers model is a 3-1/2” barrel and the only problem i ever had with it was with the recoil spring capture plug and the stupid lug on it. lug sheers off and plug goes down range leaving a limp dangling spring hanging from the front of the frame. I like to call it LDS, limp dick syndrome. Wilson Combat put in a full length recoil spring guide a plug the is now captured like JMB meant it to be. Runs fine. It has a ramped frame.
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Hey redhawk! Look back at post #15 in this thread. I think krunchnik nailed it!
Apparently all Kimber 9mm 1911s have a ramped barrel.
The .45 1911s have non ramped barrels except for the Ultra, which has a ramped barrel.
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Yes, that appears to be the way it works. Simply stated and well put!
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Did you get a new Pro Carry II?
If so,
Congratulations
If not, why am i smoking a cigar and waiting for photos?
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Well then redhawk, I've been called lots of names, but gifted has never been one of them. Posting a pic now is easier than ever. Read the forum instructions, easy-peasy.
But you know the internet saying....."no pic, didn't happen".
Nothing personal, everyone here gets the same friendly abuse.
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Hey Rick! Did you manufacture THAT pic?!! Or where in the world did you find it?!!Well then redhawk, I've been called lots of names, but gifted has never been one of them. Posting a pic now is easier than ever. Read the forum instructions, easy-peasy.
But you know the internet saying....."no pic, didn't happen".
Nothing personal, everyone here gets the same friendly abuse.
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4,763 Posts
Well Brad, I confess to a downloaded meme generator. Add the pic you want, add text and wha-LA, instant meme. Lots of fun, and who doesn't remember the "Gunny" and his loving, gentle way of addressing the troops.
And as I'm also on a couple of varmint shooting/rifle accuracy forums, some guys actually come on and ask "where do you hunt and shoot all them varmints?" So this one is prime for a creative answer to a question nobody in their right mind would answer:
That usually ends those questions.
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🤣😂🤣 That’s awesome Rick!!! I screenshot the one of Gunny to show around and enjoy! (with permission of course)!Well Brad, I confess to a downloaded meme generator. Add the pic you want, add text and wha-LA, instant meme. Lots of fun, and who doesn't remember the "Gunny" and his loving, gentle way of addressing the troops.
And as I'm also on a couple of varmint shooting/rifle accuracy forums, some guys actually come on and ask "where do you hunt and shoot all them varmints?" So this one is prime for a creative answer to a question nobody in their right mind would answer:
That usually ends those questions.
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