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About al503

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    muffin top
  • Birthday 03/21/1971

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    Portland, Oregon
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    Al Suh

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  1. JP. GMR with 16" bbl. Haven't shot it much but it ran my test loads from 115 to 147 grain bullets (blue, sns, xtreme plated, MG and zero jhps) from 104 to 156 PF without a single failure. 5 shot group ~.4" at 25 yards with the load I settled on.
  2. I'm not sure there is a benefit to having it expanded and flared in two different stations. When set correctly, the tip of the expander keeps the case down in the shell plate while the swager pushes up. It would definitely help with the wear and tear on the shell plate from the swager pushing the case upwards and it might also help the case rims from being dented/deformed as well.
  3. I only have the 21 rounder but they work just as good as the glock mags in my GMR.
  4. They do have a smaller diameter than the competition. However, I've found them to be the most accurate in the majority of my 6 different limited pistols (both 9mm and .40) and .45 in my single stack. Other coated bullets I've tried: Eggleston (both .356, .357 and.401, .402) Precision SNS BBI Bear Creek Acme The Bear Creek and Precision bullets were on par with Blue bullets but they smoke a lot more.
  5. While certainly not optimal, my guess is that it wouldn't affect the performance. In all of the hybrid builds I have (I have 3 and will get one more shortly), the barrel rib doesn't touch the slide at all throughout the cycle. They're very close but there is no contact. So, all the fitting is between the slide and barrel, minus the ~1/2" on top where the rib is.
  6. I'd try sample packs. The larger diameter bullets might force you to load short due to insufficient freebore.
  7. 9.1 grains, 3n38 with 125 grain Zero conical HP at 1.2" out of a 4.5" bbl with 4 small bbl holes gets me 170PF A different pistol with 4.5" bbl with no bbl holes is 171 PF. Loading that long reduces the initial pressure spike (even though 3n38 is one of the safest powders, it can't hurt) and with the compressed load, you don't have to worry about bullet set back.
  8. Just a suggestion. I load ammo with 3n38 very long. No issues with ammo growing. If you're chamber has enough freebore, that might be another option to consider.
  9. al503


    I couldn't get PD's to group well for me but that was a little after they first came out and things could have changed since then. MG's are slightly undersized and are a little slower but they are very accurate. Zero's are still my favorite, though.
  10. Sorry I wasn't more clear. I didn't mean that it would be enough in and of itself but as an option that would get him closer, Dan. Stock STI GR: ~1.57 oz Drilled STI GR: ~ .86 oz Dawson Aluminum: ~ .58 oz A drilled steel rod will get him ~3/4 of the way there and he wouldn't have to worry about having another consumable/something that might fail.
  11. You can also have someone bore/hollow out a steel guide rod and not worry about it wearing out.
  12. I like to load 9mm (whether minor or major) as long as possible for a couple of reasons. 1. It lowers the initial pressure spike. Not a huge concern in minor. More important in loading major, though. 2. In mags without spacers, longer rounds will most likely feed more reliably than shorter rounds. Load a few dummies out to at least 1.17" Pull the barrel and check to see if they plunk completely into the chamber without any resistance. I've loaded 147 RN bullets out to 1.245" without issue. In terms of charge, every bbl is different. The only way to reliabl
  13. I'd get it reamed. The longer the OAL, the lower the initial pressure spike. It would probably be hard to quantify but your pistol will probably last longer with a longer OAL. I load 124 MG JHP's at 1.2", which is almost 38 super/SC length.
  14. Do you have some of the previous batch to measure? Differences in temp can make a difference. Not sure if it would make .002-.003" but it might account for some of it. I shot a lot of Bear Creek moly way back when that had the same casting flash/seams. Didn't seem to affect accuracy one bit. They were very accurate.
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