Jump to content
Brian Enos's Forums... Maku mozo!

Going from 38sc to 9mm


Dfehr401

Recommended Posts

  • 7 months later...
  • 2 weeks later...

I converted two guns from 38 Super/SuperComp to 9 Major.   One with a cone comp and the other a bull barrel.  I bought new barrels and comps and had them fitted.  Since both guns had the Aftec extractor they both ran fine after being fitted.  My SVI mags run either caliber and the STI mags needed spacers.

 

As to cracking slides, yes, both guns did crack slides at some point, and STI gave me a new slide for one and balked on the other a couple years later.  I replaced both with Caspian Slides, and had my smith fit those to both barrels.  The real expense was getting the Slides cut down to fighting weight and Hard Chromed.  I used a precut Brazos slide and that saved some money but everyone thinks my Franken gun is a Brazos now.

 

At 75 I have no love for shagging brass at a match, that said if I had more money than sense I would just shoot 38SC, easier to load and you can re-load the brass till it splits.   

 

 

 

 

 

Link to comment
Share on other sites

Let's assume it costs a nice round $500 to re-barrel. Starline 38SC brass is $188/k and bulk 9mm brass is $50/k. Let's further assume you get an average of 3 uses out of the 38SC brass before losing it, and the 9mm you use once and leave it. We'll also assume you shoot 5000 rounds a year. Adjust all of these assumptions as desired, some of them are very arbitrary.

 

Your baseline 38SC brass cost will be $188 times 5 (batches of 1000) divided by 3 uses -> $313

Your alternative 9mm brass cost would be $50 times 5 -> $250

Savings is $63 per year plus the saved wear & tear on your back from picking up brass. You may also spend a tiny bit less on powder but we'll ignore that.

In pure monetary terms it will take you 7.9 years to earn back the rebarrel cost (ignoring Time Value of Money)

 

If you shoot more than that, pick up your 9mm brass, or get "free" 9mm brass the payback period is shorter. If you get more uses from your brass it's longer. If you really really really don't want to pick up brass the math is kinda irrelevant.

 

Edited by MoNsTeR
initial post erroneously said picking up your 9 brass makes the payback longer
Link to comment
Share on other sites

6 hours ago, CocoBolo said:

 

 

At 75 I have no love for shagging brass at a match, that said if I had more money than sense I would just shoot 38SC, easier to load and you can re-load the brass till it splits.   

 

 

 

and your gun will probably last longer and work better. seems dumb to me to spend 5-10g on a gun and then use cheap crappy mismatched overpressured 9mm brass.

Link to comment
Share on other sites

On 8/26/2023 at 2:44 PM, MadBomber said:

You shouldn't need a new slide.  Just rebarrel the gun you have.  Might need to get a new comp.  500-700 dollars should get it done.

That’s way too cheap.

Link to comment
Share on other sites

Coco, there are some strange opinions here.  You are 75 and don't want to do the brass chicken dance after every match.  I didn't either.  That's why I went 9 major.  Once you rebarrel, you will never shoot 38SC again, unless you have a little left over.

 

Buy a one piece barrel/comp from Brazos and have a good smith fit it to your existing slide.  It will last longer than you and you'll never have to re-Loctite a comp.  As far as 9mm being hard on the gun, I see no evidence of that.  My major load was 10.8gr SWMP under a 115 JHP for 175 PF.  I have no idea how many I've shot, but it is a lot.  Just recently I ran out and substituted AA7.  I had none left from last year, so I hurriedly loaded some up with 10.8gr.  After two matches I'm wondering why the dot is jumping so much.  I chrono's and found the 115 JHPs were going 1600fps, 184 PF.  No damage to the gun at all.  I'll be pulling the remainder and loading softer.

 

I buy fully processed, once fired, roll sixed, resized, swaged, polished same HS brass for 5.5 cents each.  I generally buy 6k at a time.  I was down to 5k primers and had the opportunity to buy 5k new Win+P HS brass primed with lead free primers for 14.4 cents each delivered.   My SDs for 10 and 20 round strings are always less the 6.  There is absolutely no reason to use mixed HS, range pickup brass for major.  I'll admit I do just that for 132 PF minor and 100 PF sub-minor.

 

 

Link to comment
Share on other sites

oh cmon, stick with 38 super, it's cool!  just buy new brass.  powder ain't spilling over.  believe the longer 38 feeds a slight bit better than 9 (so i've heard).

Link to comment
Share on other sites

The only benefit to shooting a 9 open gun is brass availability.  Everything else a SC will do as well or better.  

 

You can decide if that's 'worth it' for you.  These days I do a lot of practice shooting with 9s and switch to the SCs before major matches.

 

 

 

Link to comment
Share on other sites

I only tried out a 9 major gun once and the dot was dancing all over the place.  SV and Limcat sell guns with 2 top ends but at thousands extra when will you ever break even?  Considering you’ll need a 2nd toolhead which for a mark7 ain’t cheap either.

 

A few guys up here have a match 38 and practice 9.  That’s a lotta $$$$

Link to comment
Share on other sites

Oh, okay... wait! When did most (any) of us obsessive (to quote my wife) shooters ever worry about breaking even?

Is that why we have a 'race gun' and a spare? Or 2 or 3 spares?

It's more like, "I saw it. I want it. Now I got it... Hey, what's that? I want one of them too!"

I keep thinking maybe I will sell off some of my wore out guns. Maybe then I could break even?

Naa.

Link to comment
Share on other sites

1 minute ago, Dr. Phil said:

Oh, okay... wait! When did most (any) of us obsessive (to quote my wife) shooters ever worry about breaking even?

Is that why we have a 'race gun' and a spare? Or 2 or 3 spares?

It's more like, "I saw it. I want it. Now I got it... Hey, what's that? I want one of them too!"

I keep thinking maybe I will sell off some of my wore out guns. Maybe then I could break even?

Naa.

Yup, we be like yada yada yada ..............SQUIRREL!!!!!!!!!🤣

Link to comment
Share on other sites

5 hours ago, MikeyScuba said:

I only tried out a 9 major gun once and the dot was dancing all over the place.  SV and Limcat sell guns with 2 top ends but at thousands extra when will you ever break even?  Considering you’ll need a 2nd toolhead which for a mark7 ain’t cheap either.

 

A few guys up here have a match 38 and practice 9.  That’s a lotta $$$$

 

Breaking even? I think about saving money but... In this sport people will spend thousands for any advantage, perceived or otherwise, lol... 😀 I try to get sucked in to that mindset as little as possible... lately without much success! First world problem for sure...don't tell my wife.

Link to comment
Share on other sites

I'm sure the attempt to educate me on 9 major was with good intentions, but after 14 years of 9 Major I already learned most of it.   To be to the point if you have a 38Super shoot it, pickup your brass, and be happy you have a s#!t load more powders you can shoose from, and the $2000 you didn't spend on converting to 9 Major you can use for Brass or your next Open Gun.

 

Shooting wise 9 maj and 38 SC are about the same, but you do have to work up the load to fit the gun.  My 38SC worked best when I pushed the PF up to @178, and  the 9 Maj settles in nice @172.   I always use a timer to test if one load is better than the other, it may feel good, but did you accomplish the mission, are you faster now?

 

I miss smelling Dykem in the morning, maybe I'll go back to 38SC, but if I did I would miss the powder slinging of 9 Maj and those annonying crimped primer pockets of 9 mm, along with the occasional 380 case. 

 

 

 

Link to comment
Share on other sites

Despite my math arguing for sticking with 38SC, and I agree super is better "on paper", I only shoot 9 major. I load same-headstamp brass, pick it up, and get 3+ uses. No one here picks up brass at matches anymore so if I shot super my loss rate would be around 80% and I can't stomach that.

Link to comment
Share on other sites

3 hours ago, Dr. Phil said:

Dude!

I'm pretty sure your wife knows!

my wife talked to the open gms around here and insisted in 38sc for her open gun. to her credit, she does help pick up brass and works a couple majors every year where we scavenge hordes of brass. so far we have never had to buy brass.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...