10mm Hornady 155 gr XTP and Longshot Data

[TXCOONDOG]

G20, Gen 4, Factory Recoil Spring with 4.60" KKM Barrel

No signs of pressure, got me between 1124-1381fps and group sizes were 1" @ 25

Bullet: Hornady 155 gr XTP HP
Case: TopBrass .985"
Primer: WLP
Powder: Longshot 7.5 gr
O.A.L: 1.260"
Velocities: Average 1124fps
.........................................................................
Bullet: Hornady 155 Gr XTP HP
Case: TopBrass .985"
Primer: WLP
Powder: Longshot 8.5gr
O.A.L: 1.260"
Velocities: Average 1285fps
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Bullet:Hornady 155gr XTP HP
Case: Remmington .985"
Primer: WLP
Powder: Longshot 9.5gr
O.A.L: 1.260"
Velocities: Average 1381fps

 

[fanninland]

Thanks for posting - I hope to use it in the near future. We have the same exact gun/barrel. I finally put together all the equipment & components to start reloading, with exception of suitable powder for 10mm. I found some W231 locally, and read that it probably isn't good for hotter stuff but is ok for plinking loads (so maybe that is a good one for me to start with). Been keeping an eye out for Longshot, Power Pistol, Blue Dot but to no avail.

 

[TXCOONDOG]

Those were 5 shot groups using a pistol rest.

Haven't tried power pistol or blue dot since it hasn't been stocked locally. Longshot and AA#9 are recommended for 180gr and heavier, but I'm happy enough with the results to use them for 155 & 165 grainers too.