Recommendations on bullet for 38 super

[WestTex]

2 hours ago, GrumpyOne said:

That 11.3 must fill the case up completely! 

Yes! Haha. It is almost right up to the top and a pain to load. I also forgot to mention thst i can only load to 1.245" with n105 because it won't compress much beyond that. 3n38 is much easier for me to load without spilling. 

[abigger04]

13 hours ago, GrumpyOne said:

Try 10.5 grains of VV N105 with a MG 115 JHP.  OAL 1.235

 

Seems like a lot of powder! I don’t have any popple holes in my gun, so should I dial down the powder somewhat? 

[GrumpyOne]

11 minutes ago, abigger04 said:

 

Seems like a lot of powder! I don’t have any popple holes in my gun, so should I dial down the powder somewhat? 

I don't have popples in my Trubor either. N105 is a very slow powder. You actually may need somewhere around 10.7 to guarantee major. The benefit to using so much powder is thr gas created. Higher charge weight = more gas to work the comp.

[abigger04]

I'll have to look for that powder to try.  I'm almost out of CFE.

[abigger04]

Just thought I'd update this thread.

 

I finally had a chance to chrono several loads I've been working with:

 

Full length STI 38 sc, T2 comp, no popple holes.  Results are based on an average of 5 shot strings.

 

CFE

7.1 gr

125 HAP JHP

1479 FPS

OAL 1.235

PF = 184.88  (Too hot!!)

 

CFE

8.1 gr

115 Hornady XTP

1418 FPS

OAL 1.235"

PF = 163.07 (Too cold!!)

 

AC

7.3 gr

124 MG JHP

1377 FPS

OAL 1.235

PF = 171 (Just right!)

 

AA7

10.0 gr

115 Hornady XTP

OAL 1.235

1381 FPS

PF = 158.81

 

IMR 4756

7.5 gr

124 PD JHP

OAL 1.235

1295 FPS

PF = 160.58

 

 

[tomjerry1]

I have settled on 10.2 gr of AA#7, HAP 125, gets me right at 174 pf and it does produce enough gas to work the compensator. Super Comp and no popples. I don't find that AA#7 is extremely dirty, not as clean as VV tho.