However, finding a safe place to just practice shooting 1,000 is the real challenge
I think this is really worth restating - as it drives two variant opinions of folks who haven’t ever done it, at opposite ends of the spectrum.
1) The overly confident newbie has never laid eyes on 1,000yrds, so he is certain his $400 16” S&W M&P-15 Sport with a $150 Nikon 3-9x can punch milk jugs all day at 1,000yrds with cheap surplus ammo.
2) The overly cautious newbie who has never fired at 1,000yrds convinced himself he can’t reach any target at 1k without a $5000 custom rifle and a $2500 optic on top - out of reach for their budget.
So one believes too much is possible, the other believes too little... Neither are right, but there’s a lot of happiness for a lot of shooters in the middle between their perceptions.
My first 1,000yrd shooting experience as a kid was a standard Ruger M77 MkII 30-06, running a 7lb factory trigger, with a Tasco World Class 4-16x44mm, and shooting factory Winchester Supreme Ballistic Silvertip 150grn, with a low to mid-0.4 BC and only 2950fps and an ES of 40. Didn’t know any of that back then, didn’t have a ballistic calculator or a chronograph, nor a laser rangefinder. I just knew how to watch for splash and make corrections on my scope to bring the hits onto target (which had to be done with a coin). It has a new scope, new trigger, and a new stock, but I still shoot that rifle to 1,000, over 20yrs later.