welcome to thr. and good luck with your 45 super quest.I think every gun will require a slightly different setup of its own to run 45super reliably.
For example, my G30S barrel angles farther than a G21 or G41, which will aid with feeding with higher recoil spring weights. How much higher? Idk. Theoretically, that means a 21 and 41 will have feeding issues with a lower maximum spring weight than a 30.
I can claim that the G30SF will have similar feeding result to a G30S, but the 3oz difference in slide weight will make a major difference in function, especially with a compensator.
Another thing i notice is that most people who get into 45super and 460rowland overbuild the gun with brass landing damn near at the feet. That's good for plinking but not for serious SD, especially when the main talking point of the round is bear propellant.
The G30S, from what I researched, was made for LAPD SIS to run 230gr +p ammunition. The only question i have is, Does the SIS Team train with their duty ammo or standard pressure target ammo?
I check my case ejection distance with both. On my G30S(unmodified), std cases go 6ft, +P go 10ft(or more)
With a 20lbs RSA, 45super 15ft, +P 8ft, std 45acp 3ft
Using that as a benchmark I can do a combination of 3 things to bring 45super case ejection between 6-10ft
Ports or Compensator, RSA weight, Slide weight.
Example: I have a compensator that is so effective that I had to bring the RSA down to 14lbs for function. 45acp brass was lading on my toes, 45super was landing a mere 5ft at the most, recoil was pleasant.
Here and there i would experience failure to go into battery. I installed a 5lb FPS which took care of the problem, but, started getting light primer strikes with Underwood 45super. This setup, because i dont reload, is a no go. Back to the drawing board.
Up to this point in time, the only way i ran 45super for SD is with a OEM barrel 20lbs RSA,6.5lbs FPS and leather gloves. Gloves made it a pleasant shooter cause without, ouch. But, it was 100% reliable. Also, run only jacketed ammo in a OEM barrel.
Anyways, unless you have a machine shop and can build your own compensator, you have to work with whats available.
Last year i found a new .45 comp on ebay. It was $35 and worth for me to test. The seller contact me and asked about what i though. The comp was Lone Wolf Style and didnt fit flush with the slide was my complain. I told him that I wanted a comp similar to a 9mm version "conceal carry" type he also makes, with 2 screws and requires no loctite and fit flush. He asked me for some measurements and 2 months later I have it. I also bought a newer design he came out with that reduces slide speed even more. the best part, the OEM RSA works perfect.
After further investigation, I figured out that the weight of the compensator reduces recoil just as much as ports do. Like adding a heavy suppresor sometimes requires a lighter RSA, any weight on the barrel will reduce slide speed. My previous comp weighed 3oz, the new comps .6oz and .98oz.
Also, since the G30S barrel tilts further, weight on the barrel will have higher effects than that of a G21 or G41. With the new comps brass stays within 3 to 10 feet, acceptable, and the peace of mind of having OEM springs.
Adding an optic will make a small difference in slide weight.
NOTE:
+P RATED GUNS ONLY
When testing 45super in your firearm, examine each case between every shot, make a note of the configuration of the firearm as well as the case ejection distance and pattern. Look for pressure signs but more importantly look at the primer strike, it can tell you alot about whats going on. Compare them to your standard pressure and +P cases.
In conclusion,
My advice is to get a threaded barrel from a reputable manufacturer(do your homework) if you dont already have one.
Without Mods to the gun fire 45acp and +P and note the case ejection margin. Find a comp that will bring 45super case ejection to within that margin. There are universal designs, i would start with one that looks good and cross your fingers. A design that doesn't require loctite is desirable.
With this method, upgraded mag springs should NOT be necessary when achieving the operable slide speed.
For SD, case ejection of 3ft or more. Maybe you will cycle +P and 45super well, but std pressure rounds will be in limpwrist territory.
If you have a really soft shooting 45acp setup already, where cases are landing at your feet, then I'm sure 45super will function fine. But, start off with examining the cases.
Tedious, but it's not rocket science.
my 45 super setup is a glock 30 with a alphawolf barrel, a 21 lb. recoil spring and an extra power (10%) magazine spring. my super loads are at the bottom of the range (230 xtp @ 1070fps) and my brass ejects about 12 feet out.
if a stock glock 29 will take the pounding of full-house 10mm loads, i think my modified glock 30 will take the lesser pounding of the 45 super loads.
luck,
murf
