burger Posted November 23, 2002 Share Posted November 23, 2002 Just double checking. I have read where it is ok to use 9mm bullets (.355) for 38 super reloads. I currently use Hornady 125 gr. jhp bullets which mic at .356. However, I have some Winchester 9mm 115 gr. jhp bullets that I would like to use. These bullets measure .354. Is it ok to use these. If so, will the accuracy suffer. Shooting an STI with a comp. Thanks. Link to comment Share on other sites More sharing options...
Trader Posted November 23, 2002 Share Posted November 23, 2002 I loaded .355 9mm 115 grainers in my super for NRA action. Grouped 2 1/2 at 50 yards. Link to comment Share on other sites More sharing options...
burger Posted November 29, 2002 Author Share Posted November 29, 2002 Looking for load data using 115 gr. jrn and 3n38 powder. Shooting STI comp gun. Have looked at jmaass site. Don't see data for this powder/bullet combo. Thanks. Link to comment Share on other sites More sharing options...
lynn jones Posted November 29, 2002 Share Posted November 29, 2002 burger, i think the 3n38 will produce less compensator flash. lynn jones (Edited by lynn jones at 10:02 am on Nov. 30, 2002) Link to comment Share on other sites More sharing options...
BamBam Posted November 30, 2002 Share Posted November 30, 2002 Sorry to disagree, but with gun powder NEVER compare burn rates to guess at powder loads. Consider every powder to be totally different just for safety's sake, and try to find a tip on the powder you want to use from the group. Everything else being the same my gun runs 0.6 grains more of 3n38 (than 3n37) to reach the same power factor. My tribrid gun in 38 supercomp takes 9.9 grains of 3n38 to make major with 115's. If you don't have any extra holes in your barrel before the comp you should try around 9.5 grains of 3n38 to make major in your gun with the 115 grain bullets. Link to comment Share on other sites More sharing options...
RKooi Posted November 30, 2002 Share Posted November 30, 2002 Bam Bam is right. 3n38 is not that close to 3n37. N350 sits in between them on the burn chart if I am not mistaken. 3n38 definitely has less compensator flash than the other two, a little low light shooting comparison will illustrate that fact. Link to comment Share on other sites More sharing options...
BamBam Posted November 30, 2002 Share Posted November 30, 2002 The comp flash idea makes me think... do you suppose that could be any indication of the effectiveness of a powder/comp combination? Would you want to see more flash to show the fiery gases at work, or less flash to be a sign that most gas has been used? Hmmmmm. Link to comment Share on other sites More sharing options...
2alpha Posted December 1, 2002 Share Posted December 1, 2002 More fire out the comp is better, now if I could just figger out how to put a little nitrous bottle under my grip and pipe it to my comp..... Link to comment Share on other sites More sharing options...
RKooi Posted December 1, 2002 Share Posted December 1, 2002 That is interesting...is the excessive comp flash wasted powder going up or is that what we want the comp to do? I had previously thought the less flash, the more effective the combination. The 3n38 load that I was dealing with feels softer than the other two...I guess that is what matters. Link to comment Share on other sites More sharing options...
Eye Cutter Posted September 27, 2005 Share Posted September 27, 2005 However, I have some Winchester 9mm 115 gr. jhp bullets that I would like to use. These bullets measure .354. Is it ok to use these. If so, will the accuracy suffer. Shooting an STI with a comp. Thanks. the above quote hasn't been answered yet. anybody tried using .354 heads in their .38 super open pistol? can you use the .354 dia. heads safely and reliably in a .38 super schuemann barrel (.355 dia)? Link to comment Share on other sites More sharing options...
GuildSF4 Posted September 28, 2005 Share Posted September 28, 2005 However, I have some Winchester 9mm 115 gr. jhp bullets that I would like to use. These bullets measure .354. Is it ok to use these. If so, will the accuracy suffer. Shooting an STI with a comp. Thanks. the above quote hasn't been answered yet. anybody tried using .354 heads in their .38 super open pistol? can you use the .354 dia. heads safely and reliably in a .38 super schuemann barrel (.355 dia)? <{POST_SNAPBACK}> You can, however accuracy may suffer, and you may have more blow-by and wear of the barrel. (Note: this is very dependent on the actual bore diameter, some guns/ barrels may shoot them better) For jacketed bullets the bullet diameter should be the same as the bore diameter, most (not all) recently built 38 Supers (last few years) have a .355 bore. Link to comment Share on other sites More sharing options...
Eye Cutter Posted September 28, 2005 Share Posted September 28, 2005 thanks GuildSF4! the shop i get my reloads from loaded 200 rds of my .38 super shells using sellier and bellot 124gr fmj heads that measured .354 instead of armscor 124gr fmj heads i normally specify Link to comment Share on other sites More sharing options...
eric nielsen Posted September 28, 2005 Share Posted September 28, 2005 With calipers you have to be careful not to push on the thumbwheel very much or the jaws torque out at a slight angle & give you a false [undersize] reading. I close in on the bullet [cartridge, case mouth, etc] using the thumbwheel and then use my other hand to press the jaws directly across from where they touch the object being measured. Finger, thumb, jaws, object - all in a straight line. Most likely your bullets are .355" or .3555" Link to comment Share on other sites More sharing options...
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