JCSC
Member
I’m shooting some lower power loads in 1911 45 and noticed that out of 100 shots, I had 2 that sent a little spray of dust, grit (powder)? Back towards my face.
Gun issue or a reloading issue?
Gun issue or a reloading issue?
Blowback when shooting
- Thread starter JCSC
- Start date
Riomouse911
Member
Upon firing, the case probability isn’t sealing against the chamber all the way. Are your cases all sooty on the exterior?
Stay safe.
Stay safe.
OP
OP
JCSC
Member
I have been reading on the subject and that makes the most sense.
The cases are a sooty mess, but I’m running HP38 and it’s bad anyway.
I guess this is the price you pay for mousefart loads.
The cases are a sooty mess, but I’m running HP38 and it’s bad anyway.
I guess this is the price you pay for mousefart loads.
Dave DeLaurant
Member
Along with the above, try making a video of your gun as you fire off a magazine. Even without slo-mo, you can get some idea of what's happening at the ejection port and how often.
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LiveLife
Member
If you are getting soot on case and getting powder in face with mouse fart loads, your charges are too low to properly seal case mouth/neck with chamber and high pressure gas is pushing unburnt powder granules back.
Incrementally increase your powder charge until powder granule to face stops.
When I was loading 230 gr X-Treme plated RN (sized .451") and W231/HP-38 at 1.240" referencing lead load data, I got unburnt powder granule to face out of Sig 1911 until charge was over 5.0 gr. Accuracy improved with 5.1 and 5.2 gr so I kept 5.2 gr for lighter target load.
- 45ACP 230 gr Lead RN W231 COL 1.200" Start 4.3 gr (699 fps) - Max 5.3 gr (834 fps) - https://www.hodgdonreloading.com/reloading-data-center
- 45ACP 230 gr Lead RN W231 COL 1.240" Start 5.1 gr (794 fps) - Max 5.6 gr (853 fps) - https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/handgun/45_Auto_230_LRN.pdf
My favorite 45ACP mouse fart load is 200 gr LSWC with 4.0 gr of Promo (Referencing Red Dot load data per Alliant). Very accurate 2" groups at 25 yards and no unburnt powder to face.
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epags
Member
Yep. Too light a load and brass is not expanding to seal the chamber. I have experienced it with rifles when trying to fire form without using too much powder. Doesn't work.
For you, use mid range reloading data for comfortable recoil and OK accuracy.
For you, use mid range reloading data for comfortable recoil and OK accuracy.
OP
OP
JCSC
Member
Thanks Murf
I’m not ready to make a switch on powder. I just switched over to HP38 from Tightgroup.
LiveLife
Member
While W231/HP-38 is very suitable for lighter target loads, faster burning powders are even better suited for mouse fart loads.
Yep, At 2 cases per 100 it doesn't sound like much of a problem.
Trying shooting those loads through a suppressor. The added back pressure sends back a surprising amount of debris. Glass are a must, but then again they always are when shooting.
someguy2800
Member
You are #39. I would suggest using something between #7 and #18. My preferred would be bullseye, 700x, or red dot. Flake shotgun powders do better at low pressure than ball powders
OP
OP
JCSC
Member
Murf
Can’t say I did have an issue with TG, but I didn’t do any experimenting. I ran around 1000 rounds of 230 FMJ with TG without issue.
I was just using the last of my stores before I started load workups with HP38.
My LGS has other options, but HP38 seemed like a good one stop shop for 380,9,45. I’m due to restock soon.
Can’t say I did have an issue with TG, but I didn’t do any experimenting. I ran around 1000 rounds of 230 FMJ with TG without issue.
I was just using the last of my stores before I started load workups with HP38.
My LGS has other options, but HP38 seemed like a good one stop shop for 380,9,45. I’m due to restock soon.
LiveLife
Member
Yes, W231/HP-38 is a great powder for 380Auto, 38Spl (Hence the name), 9mm and 45ACP ... And not too bad for 40S&W and 45Colt too.
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