I have touched on this generally in other threads, but I have a more specific question.
So, my GF and I have been invited to go hog hunting, and we presumed we would use my .308. Hunting ammo comes out around 2600-2650fps from my gun due to its short barrel, but I know that is plenty for the <<150yd ranges I expect to see. But, while the GF can *handle* the loads, she doesn't particularly enjoy shooting them and will pretty quickly start flinching. So, how far down can I load to still be effective on pigs under, say, 100lbs? I have read about people taking 75-100lbs pretty successfully at medium ranges using even .30-carbine, and I can easily duplicate those loads using the same bullets and Unique powder, for about 1/3 the recoil of my current loads. Obviously, she wouldn't try taking anything serious with it, and I'd still have the full-power loads for that. Though, from what I've read the average-sized male in Oklahoma is about 130lbs and the average sow is about 110lbs, with rare speciments getting to 300. But again, especially for her, we would only go for the ones on the smaller side.
But yes, as the title states, how light can I go for a reasonably-effective load for smaller hogs inside probably 75 yards using a .30-cal projectile? I want her to be able to hunt with the same loads used in practice because I want her to be completely comfortable with them, and have thus pretty seriously considered the ".30 carbine" approach. She is pretty good with her .22 so I think in a decently-supported position (like kneeling or even prone) she could make a good shot at these ranges, as long as she was comfortable enough with the gun to keep her mind on the basics of good shooting, rather than the muzzle blast or recoil.
Performance seems pretty decent for the goal:
http://www.brassfetcher.com/30carbineFed110grSP.html *edit*
I will eventually try to pick up a .44mag barrel because I think that would do everything but generally with a little less muzzle blast, easier reloading, and slightly-reduced practice costs. I already have the dies, a lot of bullets left for practice loads (RNFP bullets, which I suppose could still be reasonably effective on their own), and much more loading experience with the cartridge. But, until I get around to that, the .308 will have to do!