Hello, I was curious about the fairly new sr-45. If you own one, how do you like it. Has it been reliable? I'm looking for an affordable 45 with excellent chamber support. The gun will be used in the Mtn's for cougar/Bear defense. The round I have in mind is 45 super 255gr Hardcast from Underwood Ammo. I have Shot 50 rds of this ammo from my 4566tsw with only a 22lb recoil spring upgrade. Can the Sr 45 handle this Load? Thanks
Looking for SR-45 Feedback 45 Super
- Thread starter Kosmo K
- Start date
Uncle Malice
New member
I don't think I would run 45 super in anything other than a G21 or USP 45.
I thought I read something here at TFL a while back about the SR. Series Rugers having some type of extra strong Lockup/ action. I can't remember exactly what it was. In addition, I've never seen a round in the barrel to verify how much chamber support it may have. Are the new (SR.) Guns as "Beefy" as the old P series? I've never seen a Chamber like the one on my P-95.
g.willikers
New member
Is it really a good idea to do this?
After all, your sidearm will be for, as stated, surviving a deadly attack by a large carnivore.
Wouldn't it be better to carry a tried and true sidearm known to be successful in doing this?
Like, maybe a Ruger Alaskan or something similar?
Just a thought.
After all, your sidearm will be for, as stated, surviving a deadly attack by a large carnivore.
Wouldn't it be better to carry a tried and true sidearm known to be successful in doing this?
Like, maybe a Ruger Alaskan or something similar?
Just a thought.
I wouldn't run any supers through that particular gun. It would probably stay together and shoot the rounds fine but I'd bet you'd shorten the life of the handgun by firing them through it. The reason I say it is because the rugers have polymer frame rails. Meaning your steel slide is being guided by plastic. I wouldn't trust those plastic rails to the extra pressure a .45 super generates and the velocity of your slide would be increased some without increased pressure recoil spring
Uncle Malice
New member
That's true with anything.... Shooting only +P will shorten the life vs shooting only standard pressure too.
Not sure where you get your information, but it's wrong. The SR45 has large, beefy slide rails. Larger than the Glocks or USP's.
I'm not familiar with the chamber support on an SR45 but as long as it's good you shouldn't have any issues. I reload for the .45 Super but out of a KKM barreled Glock 21. I've got some 275gr and 300gr load data and I know a guy who is running 275's at 1080-1100 fps from a 4" XD45, stock barrel not sure about recoil assembly though.
I run them hotter than that (275gr @ 1200 fps) but I use a compensator also. With a well supported barrel and comp you can reload the Super to the same levels as the 460 Rowland.
The SR45 will likely handle the Underwood 255gr hardcast just fine, might need a heavier recoil spring but the only way to know for sure is to try.
I run them hotter than that (275gr @ 1200 fps) but I use a compensator also. With a well supported barrel and comp you can reload the Super to the same levels as the 460 Rowland.
The SR45 will likely handle the Underwood 255gr hardcast just fine, might need a heavier recoil spring but the only way to know for sure is to try.
Ruger45LC > that 275gr @1200fps load is pretty potent. 879 ft lbs. The underwood load is 255gr @ 1075fps. How long is the KKM Barrel in your Glock ? Also, what are you using in the recoil spring Dept.? Any sprinco or dpms type of recoil reducer? Uncle Malice> Thanks for the pic. Is that a captured guide rod? Any chance you could snap a pic with a round in the chamber? I'm curious, why do you feel the Glock 21 would be better suited for the 45 super round?
Uncle Malice
New member
Sorry, not my pic. I don't have an SR45. I just found that one online. I looked for a pic of a round in the chamber, but was unsuccessful.
Yes, it is a captive recoil spring.
I say USP 45 and Glock 21 just because they are by far the most commonly used platforms for the cartridge. The Glock 21 is based on the Glock 20, built for 10mm and is a very beefy gun. Fat, heavy, strong slide. I would use an aftermarket barrel and stronger recoil spring for sure, but that's simple and cheap.
So someone is telling me the frame rails are not in fact polymer? I am pretty sure they are. My step dad had a Ruger sr40c and I am 100 percent sure the .40 and 9mm Sr pistols have polymer frame rails, I don't think they changed that part of the design for the sr45. Anyways, I am sure the sr45 is a good handgun and I wouldn't mind owning own. And I also am aware that the frame rails don't get that much stress during firing, but I personally wouldn't fire extreme extra pressure ammo through a polymer frames gun let alone one that has polymer rails. Its like using polymer piston bore sleeves inside an engine that has steel pistons. The steel is going to wear on the plastic. It has to because it is the plastic isn't going to wear the steel. Something has to wear. I just don't know how durable this design is
Uncle Malice
New member
Not telling. Showing. See the big steel locking block with big steel rails up front? The rear rails are polymer, yes... but the rear rails don't take hardly any force. The old Ruger P95 ran on ALL polymer rails and was one of the most bomb proof handguns ever built.
The Springfield XD and XDM also have polymer rails in the rear.
And yet, you are wrong again. The SR40 has steel rails in front as well. Here is a video of the SR40 being field stripped: http://youtu.be/SXIrD22h3qI
So what we're left with is conjecture and your misunderstanding of the design?
tahunua001
New member
sorry P71 but you are sorely mistaken. I just took my SR9C down and it infact has metal guide rods. I do not know of a single firearm which uses plastic guides for the slide, not saying they are out there, but it is kindof a high friction area which would very quickly wear away with even regular operation.
as for 45 super, I would probably be leery of using it in an SR series pistol. I own them, and love them but I do not believe that they were overdesigned to the point that such loads would not damage them over time. the SR45, especially. most of the time when a model designed for 9mm is adapted to 45 the pistol is enlarged slightly in all dimensions to allow more metal and beef up the design to handle the additional stress of the larger cartridge. however if memory serves me right(which it rarely does) the SR45 is identical in dimensions to the earlier SR9 and SR40, leading me to think that the SR45 may not be the most robust of the currently available 45ACP pistols.
with the number of KaBooms I read about with guys double charging their handloads I would not recommend a Glock either, just an overattachment to keeping my fingers intact. I would suggest probably a springfield XD/XDM or a 1911 of some type myself if you are dead set on this but really, an auto is a little anemic for what you want it to do. I pack my 45 autos for bear and cats but our blackbears out here max out at about 300 pounds, most are closer to 200. if you have large bears like grizzlies or brown bears then you need to upgrade to something in the 460/480 range of revolver cartridges.
as for 45 super, I would probably be leery of using it in an SR series pistol. I own them, and love them but I do not believe that they were overdesigned to the point that such loads would not damage them over time. the SR45, especially. most of the time when a model designed for 9mm is adapted to 45 the pistol is enlarged slightly in all dimensions to allow more metal and beef up the design to handle the additional stress of the larger cartridge. however if memory serves me right(which it rarely does) the SR45 is identical in dimensions to the earlier SR9 and SR40, leading me to think that the SR45 may not be the most robust of the currently available 45ACP pistols.
with the number of KaBooms I read about with guys double charging their handloads I would not recommend a Glock either, just an overattachment to keeping my fingers intact. I would suggest probably a springfield XD/XDM or a 1911 of some type myself if you are dead set on this but really, an auto is a little anemic for what you want it to do. I pack my 45 autos for bear and cats but our blackbears out here max out at about 300 pounds, most are closer to 200. if you have large bears like grizzlies or brown bears then you need to upgrade to something in the 460/480 range of revolver cartridges.
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Kosmo K said:
The KKM in my G21 comes in at 5", it's a stock length plus threading which brings it to 5". I use the stock Gen4 recoil spring assembly, it does very well even with stout loads, nothing aftermarket here, just stock but keep in mind for the warmer stuff I screw on the compensator, it's a must!
Although not directed at me nor SR45 specific, here's the chamber support difference between a stock G21 barrel and the KKM G21 barrel:
275gr:
Can get 1150 fps from the 300gr hardcasts (880ft-lbs):
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. Doesn't 45 super operate at around 28,000? What pressure does .40 S&W generate?tahunua001
New member
as much as 35K, but it also has more room for bulking up design inside the slide. 45 doesn't have much room as a lot of space concessions have to be made just to accommodate the cartridge.