rbernie said:
Here's what I've found out on the subject, using my chrono and both factory and handloaded ammo shot out of my SKS and 7.62x39 AR and my Marlin leverguns:
- 123gr-125gr 7.62x39 loads hit around 2350-2400fps at the muzzle from a 20" barrel.
- 150gr 7.62x39 loads step out at around 2050-2100fps at the muzzle from a 20" barrel.
- 125gr 30/30 loads move along at around 2500-2550fps at the muzzle from a 20" barrel.
- 150gr 30/30 loads move along at around 2200-2250fps at the muzzle from a 20" barrel.
In other words, the 30/30 brings an extra 150fps to the table for equivalent bullet weights. The 7.62x39 will gain some of that back on the far side of 150 yards due to the better ballistic coefficients of its spitzer bullets, but by 200 yards both are at their practical limit for humane one-shot drops on deer-sized game.
Yes, Corbon advertises a 150gr 7.62x39 load at 2300fps. Based solely on my own loading experiences with 7.62x39 in proper .3105-diameter barrels, I speculate that Corbon is either inflating their velocity ratings or is achieving this speed via moderate overpressure, extra-long open-throated test barrels, and by using undersized (308-caliber) bullets.
Thanks for all the replies. Yeah, I kinda figured that hollow point didn't look like it was worth much. Looked more like the hollow point in a 162 grain .30 caliber match bullet. That's why I asked.
I'll just stick to my 135 grain bullet. It shoots into about 6" at 200 yards, 3" at 100 for five shot groups. That's adequate. I hardly ever use the thing, though. I bought this SKS for 75 bucks from a guy. It had about the best trigger on any SKS I've ever felt, no creep! I used to order a lot of these things when I had an FFL. Seems like 1 out of 10 of 'em had a decent trigger. So, I went crazy buying a chote camo stock, scope mount and scope, case deflector/forend, five round mag, ambidextrous trigger (I shoot south paw), and cut off the bayonet lug. Got it all dressed up and by that time had over $200 in it. So, I wind up with a 9 lbs semi auto deer rifle.
Oh, well, you see this stuff in the catalogs and think "that's cheap! I gotta have one!" and order it. Before you know it, you've spent real money on a toy. All my hunting anymore is with my Remington M7 stainless in .308 winchester, an infinitely better rifle. I've got that SKS sighted in for my surplus stuff now, thought it'd make a good loaner rifle or something, but I've got two other rifles, one is a .257 Roberts old Remington short action M722, the other is a Savage 110 in 7 mag. I don't even need this thing as a loaner, so now it's just a fun range gun that's cheap to shoot.
Those Chrono results pretty much match my own. My 135 grainer is about 2150 fps or maybe it was closer to 2200, got it in my range notes, but too lazy to look it up. I sighted 3" high at 100 and it was on at 200. I wouldn't push that load past 200 cause the accuracy was marginal at that range and it's falling below 1000 ft lbs at that point.
I killed one small spike buck at 80 yards face on in the chest and out the rib cage, was a slight quartering angle. The thing jumped, ran about 150 yards and fell. I start to step out of the blind and it comes a pouring rain for about 15 minutes! So, the blood trail is gone. I gave up and walked back to my dirt bike to ride into camp and the thing is laying about 20 yards from my bike! ROFLMAO. But, I didn't like the fact the thing ran so far with a rather devistating looking lung shot. It wasn't even that large a deer. I've killed deer with the .30-30 that died right there. Maybe it was just a fluke, but I have more confidence in my other calibers.