Ok so i built a savage axis with a match 7.62x39, 22" mcgowen barrel in the proper 310 bore. Shoots better than most here would ever take my word for.
That said im shooting 123g HP Barnaul (packaged as wolf). I zeroed at 100 yards. ammo on a cold barrel 3 shot group stays 1" or less. Now today i decided it was a good day to stop simply holding over and start learning MOA and scope dialing. At 200 yards i hit just under 4 3/4" low. Am i correct that comes to 2.25 MOA. I was busting normal sized water bottles repeatedly after dialing up 2.25 on my swfa 10x.
Probably boring to most here but i felt 7.62x39 would be an awesome practice rifle due to it having recoil (lighter rifle with no brake). TO ME the recoil feels very close to my heavy 300PRC with a brake. It's just a LOT cheaper to shoot than 300prc. When i have time i'll invest in some ar500 steel gongs instead of just buying bulk packs of water bottles at sam's lol.
All of this said, i need to invest in a ballistic chronograph. I know nothing about them so i figured the hide would be a good place to start asking. I know my custom 22" match barrel and tight headspace is producing faster speeds than the 16" test barrels used in all the data charts that could be found online. Everywhere i look says i should be 6-7" drop at 200 yet im less than 4.75". I'm still learning but that seems like a big difference to me. Anyway without a chronograph, any and all ballistic calculators are more of a guessing game. This is going to be the same for my 300PRC except would have cost me 200 times more today to figure that out lol.
Im shooting on my own private property, was a perfect day as there was absolutely no wind. Not even enough to disturb my brothers cigarette smoke.
Rifle im messing with in its current state
factory bull barrel stock with sporter profile barrel (boyds pro varmint on the way)
PTG bolt head with stock savage 223 parts
.310 mcgowen barrel 1-10 twist 7.62x39 MATCH
Headspaced to the ammo being used as it's pretty consistent and will be the only ammo used.
Vortex rings on egw 0 moa base
SWFA SS 10x42 MOA-Quad
That said im shooting 123g HP Barnaul (packaged as wolf). I zeroed at 100 yards. ammo on a cold barrel 3 shot group stays 1" or less. Now today i decided it was a good day to stop simply holding over and start learning MOA and scope dialing. At 200 yards i hit just under 4 3/4" low. Am i correct that comes to 2.25 MOA. I was busting normal sized water bottles repeatedly after dialing up 2.25 on my swfa 10x.
Probably boring to most here but i felt 7.62x39 would be an awesome practice rifle due to it having recoil (lighter rifle with no brake). TO ME the recoil feels very close to my heavy 300PRC with a brake. It's just a LOT cheaper to shoot than 300prc. When i have time i'll invest in some ar500 steel gongs instead of just buying bulk packs of water bottles at sam's lol.
All of this said, i need to invest in a ballistic chronograph. I know nothing about them so i figured the hide would be a good place to start asking. I know my custom 22" match barrel and tight headspace is producing faster speeds than the 16" test barrels used in all the data charts that could be found online. Everywhere i look says i should be 6-7" drop at 200 yet im less than 4.75". I'm still learning but that seems like a big difference to me. Anyway without a chronograph, any and all ballistic calculators are more of a guessing game. This is going to be the same for my 300PRC except would have cost me 200 times more today to figure that out lol.
Im shooting on my own private property, was a perfect day as there was absolutely no wind. Not even enough to disturb my brothers cigarette smoke.
Rifle im messing with in its current state
factory bull barrel stock with sporter profile barrel (boyds pro varmint on the way)
PTG bolt head with stock savage 223 parts
.310 mcgowen barrel 1-10 twist 7.62x39 MATCH
Headspaced to the ammo being used as it's pretty consistent and will be the only ammo used.
Vortex rings on egw 0 moa base
SWFA SS 10x42 MOA-Quad
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