I want something that will run 50gr bullets for several reasons.
1. 50-55gr bullets are about all you can find for factory ammo. Plus then i can buy 53gr v-max in bulk and reload the 250 and 223 ammo with them.
2. The devastation of a v-max at 4000fps is amazingly fun when shooting prairie dogs. The heavier bullets are great for long range, but don't have the same affect a v-max does.
3. the light bullets are so fast they don't have much drop, so within 300 yards i don't need to worry about hold over.
The reason I wanted the fast twist is I also have my own 1000 yard range which i enjoy shooting at, and a 22 call bullet is about the cheapest round you can send down range. Plus its a fun challenge to get out to that distance. I would like to get as fast of twist as possible to also run some heavier bullets when shooting steel, but primarily I will shoot the lighter bullets for hunting.
Thus why i was wondering if anyone has ran 50 or 55gr bullets through a twist like 1:9, as most of what I'm seeing that will over speed the bullets. I called hornady but the guy i talked to didn't have any general guidelines as far as RPM the v-max can handle. I don't want to buy a barrel then not be able to shoot the ammo I want, so looks like i need to get a slower twist rate. Now wondering if 1:10 will work for me. Won't really work on the heavier bullets but should be okay on 50gr and larger I think.
You're trying to make one rifle do the job of two, somewhere there's going to have to be a compromise or you may end up with a build that does nothing well.
There's not a plethora of data out there for what your seeking, in fact it's extremely limited. There's a lot of data with 14 twists, and other than that the other data out there is fast twist (1:8, 1:7) for the 80's-90's as that's what people tend to go for. I have my doubts about 1:10 even working well for 69gr.
You have your own 1000 yard range, do you already have a rifle or rifles that you shoot at this range that are capable?
Do you have a rifle already that's flat shooting for that tasks that you seem to want as one of this rifles duties?
Ask yourself those questions and then turn this into the rifle your lacking, if you're not lacking either, turn this rifle into the one that you'd rather have another of, then build a second rifle if you really want another to do the same thing as the others.
There's 22 cal bullets that are economically priced in all varieties so I wouldn't use that as a justification. Also consider that a 22-250 isn't the best choice as far as barrel life compared to some others, and you're burning more powder than others. A couple cents more or less for a bullet shouldn't play a huge roll. Also you're already loading for another rifle with different data, powders, brass, and even primers... Consolidating bullets for this reason is also small potatoes.
If lighter bullets are more of a priority for this build and you want to run the 53gr Vmax (great bullet choice for a light bullet), I'd just do a 1:12 and call it a day. 1:12 will ensure the 53gr is stable at 22-250 velocities since its a little longer, I actually had a 1:14 22-250 that wouldn't stabilize it. You'll also be able to run the even lighter bullets just fine. Heavier bullets aside from the 60r Vmax will probably be a no go and that bullet won't be worth it due to the pretty terrible BC.
There are plenty of heavier bullets that are very explosive at 22-250 velocities and they're still really flat at close range but no, not as flat as the light bullets. Close though and they don't just absolutely fall on there face like the light bullets do either. Another solution something even faster like 22-243. It will run a 75gr bullet almost as fast as a 22-250 will run the 53gr. It gets you the flat, the super explosive impact, and long range capability but the trade off here will be barrel life and more powder.
Another option is to pick up any one of a number of the factory rifle options that are available for less than the cost of good barrel blank and threading. $500 will get you a Vanguard which are very accurate rifles, top it with a standard optic that has serviceable glass and will hold zero. You don't need wiz bang features for a gun that your shooting a laser beam out of to 300 yards so you can be under a grand total. Then build your action into the dedicated long range rifle and you'll have a dedicated rifle for each type of shooting.
I know none of this is what you want to hear but I don't think anyone can definitively tell you that X twist rate is definitely going to run great with light and heavy bullets. If you want certainty you're going to have to chose where to compromise.
