Bullet Weight or Power Factor for IPSC Production?

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Supercool

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Quick question for you IPSC guys. Can we use 115 grain ammo for production? Any rule barring us from 115 grain? Any reason why you wouldn't want to use 115 grain?

I was told before I ever read the rule book that 115 was not a good idea, and I'm left wondering why right now.

I was looking at the rule book and the minimum power factor is 125, did a calc and anything 115 grain above 1087 ft/s meets that requirement. It also looks like a lot of the bulk ammo I buy does not drop down to that velocity well outside of 25 yards.
 
For most of the guys reloading the trick setup is to go with heavier bullets that allow a lower muzzle velocity. That heavy bullet and lower speed combo definetly has a much softer snap to the recoil and that makes getting off faster double taps easier.

It's something you can really feel easily for yourself too. Going from 124 to 147 gn loads that both made 130PF felt like night and day.
 
115's are only prohibited in Open Division (no idea why anymore, they are allowed in USPSA with their higher PF in Open) but in all other divisions they are fine. I've played with everything from 147 to 115 factory in a friends M&P and to be honest I like the 115's. I used to be a big fan of the heavy bullets when I shot a Glock 17 in IPSC, but now a days I seem to prefer the lighter faster bullets. It could be that after years of shooting Open I like a snappier gun....
 
Okay thanks guys. I don't reload, so it's all factory fmj for me. I currently use 124. I know recoil is sometimes subjective, but would it be beneficial to switch to either 115 or 147 grain?
 
im with bc rider, i started using 147gr stuff (you can buy it for the same price from custom reloading) and immediately noticed a huge difference. plus its below the sound barrier so there is not crack of pressure wave and its more pleasant to shoot because of that.

actually, i made this video to show 124 and 147 difference
[youtube]psvnAxGmw6o[/youtube]

also, 115s are not prohibited from open, you just cant use them for major, and the uspsa pf is the same 160 as IPSC, its even 160 for limited div as well.
 
heavenIsAlie said:
im with bc rider, i started using 147gr stuff (you can buy it for the same price from custom reloading) and immediately noticed a huge difference. plus its below the sound barrier so there is not crack of pressure wave and its more pleasant to shoot because of that.

actually, i made this video to show 124 and 147 difference
[youtube]psvnAxGmw6o[/youtube]

also, 115s are not prohibited from open, you just cant use them for major, and the uspsa pf is the same 160 as IPSC, its even 160 for limited div as well.
Click to expand...

I suggest you check the USPSA rulebook. PF for major is 165 for all division that use major scoring Pf's
 
US never had 160PF, when IPSC reduced the PF to 160 and 170, USPSA also reduced but made it 165 across the board.
 
They are including the PF's for both IPSC and USPSA

Open Division - IPSC
Standard Division - IPSC
Modified Division - IPSC (now gone)
Production Division - IPSC
Revolver Standard Division - IPSC
US Open Division - USPSA
US Limited Division - USPSA
US Production Division - USPSA
US Revolver Division - USPSA
US Limited 10 Round Division - USPSA

USPSA PF is 165


heavenIsAlie said:
fist link when i google "USPSA open power factor"

http://www.uspsa.org/rules/14th_Ed_US_html/14th_Ed_US_Rules.11.html
Click to expand...
 
If you're running a Shadow or some other CZ product, I'd recommend going with 115s. IIRC, the rifling twist rate in CZs results in 115s having a greater accuracy potential than 147s. YMMV.
 
No accuracy problems with 147s in a Shadow, unless I'm missing something, but they are regulated for 124gr from the factory. To shoot 147s you need a taller front sight.
 
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