Got this around Thanksgiving. Sig P220 Legion. First time shooting a 10mm and it isn't the beast many people make it out to be even with 220gr Underwood loads.
I use 165g SST's in my Savage 10FP. I reload them but I'm sure someone puts them into a factory cartridge. In my gun they hold 0.3-0.6 MOA at 100y and 1-1.2 MOA out to 400y.
The following are all 5 shot groups. Measurement is in MOA.
.223 RRA Elite CAR A4 w/ 1:8 twist
100y .873 Hornady 55g FMJ
200y .873 Hornady 60g VMax
300y .947 Sierra 69g MatchKing
400y .836 Sierra 69g MatchKing
The following are all 4 shot groups. Measurement is in...
Extended mags are supposed to be available this month on Beretta site. Not holding my breath but we should see them soon.
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I haven't had that experience. My 55g load w/ H335 is 24.5 at 2.24" OAL.
Hodgdon load data for a Speer 55g SP is 23.0 to 25.3g with 2.20" OAL.
Maybe try a shorter OAL? Can you create to much pressure by being too close to the lands? Don't know for sure just asking.
I tried 100y for the first time in June. Using a bipod on a bench.
3 groups of 5 shots each. Groups were 1.75", 1.61" and 2.06".
I guess theoretically they should get smaller at 50y.
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