Powder Burn Rates and Felt Recoil Test

Discussion in 'Reloading' started by George Kaplan, Jan 25, 2020.

  1. sciolist

    sciolist On the Border

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    PF is always important as a metric, regardless of rules. I think WST/320 is very resilient for sub-major 9, 9 major being a pretty specialized load.

    Most practical pistol is inside 30 yards. Occasionally we have 40 or 50 yard targets, but they are pretty rare.

    Loading production ammo down from 130 to 120 PF with 147's, I'd say the big drop is past 50 yards. But at 20 yards it's not a problem at all.

    And if you keep your production charge constant and go from 147's to 124's, you can drop down to sub-minor and get good hits at 50 yards.

    Cycling the gun depends on using appropriate springs. If you're going to drop into sub-minor with 147's, malformed bullets may not cycle.
     
  2. SARDG

    SARDG Florida's Left Coast

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    Cannot change springs in any gun I shoot except my racegun(s) - which are a low percentage of my total competition, so have to adjust load.

    As for bullets, I use MG jacketed exclusively.
     

  3. xdmikey

    xdmikey

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    OP, I killed my gun time yesterday by breaking down 40 cal ammo loaded with AA#2.

    I’ll try to get pics up of the brass it jacked up
    I have a buddy from another forum that is a commercial reloader and he told me #2 and 40 are not friendly. More like 380 or light light 9mm.
    Be careful with #2.
     
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  4. George Kaplan

    George Kaplan emeritus

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    I started reloading to keep my wife shooting. I am on a mission to develop the lightest recoiling .38 Special in existence. Every round I have loaded thus far have all been starting loads.

    I'm experimenting with different powders, all starting loads, and have observed that each have their own recoil characteristics. AA2, even at minimum published loads, has disagreeable recoil compared to the minimum starting loads of either the Sport Pistol and the VV I compared them to even though SP is not much slower than the AA. AA might be the greatest powder ever, but is off my list.
     
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  5. Ricky baby

    Ricky baby

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    Another thing that Lowers felt recoil is a longer oal. You do of course have to bump up the powder but is worth it.
     
  6. Lagamor

    Lagamor

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    I loaded up 148 wadcutters with 2.5 grains of Clays last night. Recoil was real soft and Clays always burns clean.
     
  7. Taterhead

    Taterhead Nightshade

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    Were they overloaded? If not, I'm afraid that you did work unnecessarily. Powders in the burn speed and quicker are fine for modest velocity 40 S&W. Don't push No. 2, for sure. It meters so well that drops won't vary much.

    Western Powders lists load data for several powders that are even quicker burning than No. 2.

    There is almost perfect overlap of suitable powders for 9mm and 40. Almost certainly, if a powder is good for 9, it has similar utility in 40. I'm struggling to think of exceptions.
     
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  8. HAMMERHEAD

    HAMMERHEAD

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    Hard to beat W231 for soft recoil and soft report from 38 spl or 9mm.
     
  9. FlyfishermanMike

    FlyfishermanMike

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    I've loaded 2.8 gr. Red Dot behind a 158 SWC for my wife.

    Sent from my SM-G973U using Tapatalk
     
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  10. George Kaplan

    George Kaplan emeritus

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    That's going to be my next powder experiment. Old school powder for an old school cartridge. I like it.
     
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  11. Rusty Gun

    Rusty Gun Brass picker

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  12. fredj338

    fredj338

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    The bullet has to go just fast enough to be stable. I can run 110pf 147 with 2"/25y accuracy but my 1911 wont cycle reliably.
     
  13. fredj338

    fredj338

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    That is just not a true statement. I can make any pistiol powder run in any caliber. Its just about what level of performance. Sure AA#2 isnt appropriate for full piwer 40, but 40 minor, sure no problem. Just llok it up on their data site.
     
    Last edited: Jan 27, 2020
  14. fredj338

    fredj338

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    Reddot is a real sleeper for service rds, particularly with lead bullets, very accurate if not a bit dirty.
     
  15. sciolist

    sciolist On the Border

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    110 PF is really low for 147. With gen3 Glocks and #10 spring or Stock 2 and #8 spring, I think 120 PF is 100% with 147. But that's the ragged edge.

    If you want to go lower, should use a lighter bullet.
     
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  16. SARDG

    SARDG Florida's Left Coast

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    ...and that's the fine line I have to walk - accuracy v. reliability in a semi-auto, and a soft-shooter. And I can't change springs w/o moving out of stock.

    My racegun(s) use different loads and RSAs. Just about different everything except the basic frame.

    So I should ask about your accurate 110pf, 147 load. Maybe I can get a racegun to run with that.
     
  17. fredj338

    fredj338

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    I runmy own cast/coated 147gr RN over 3.1gr of wst for a 120pf in my g26, about as soft as it will go with an old stock recoil spring. Its accurate enough to hit 8" plates offhand at 30y. I've shot a few slw fire 2" 25yd groups just testing. Its really soft shooting in a heavy gun like a 1911 or cz. It will just run in my 1911 w/ 11# spring.
     
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  18. SARDG

    SARDG Florida's Left Coast

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    120pf from a 26 probably means 126-127 from a 17, which is just about where I'm at. I'm a fan of old springs as well.
     
  19. FlyfishermanMike

    FlyfishermanMike

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    Agreed! An ideal revolver/lead bullet powder. I don't shoot many 200 gr. in 45 ACP but when I do I use Red dot.

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