Need to keep in mind that when shooting out to 200 or 300 yards with .22LR, supersonic ammo will drop to subsonic velocity at some point before it gets to the target, and that transition can have a negative impact on accuracy. Better to use subsonic ammo, to avoid the transition from supersonic to subsonic.
I agree with that and also think the the way to get to subsonic is with more lead, not just less powder. The draw back? It takes a longer barrel to get the revs up to required levels for best accuracy.
Huh, i never knew they(as in
ammo makers in general ) made anything but 40 gr. Lol
Yep, longer subsonic bullets won’t lose their velocity as quickly as shorter subsonic bullets (better ballistic coefficient).
In .22LR rifles, longer barrels tend to result in lower muzzle velocity - I think 10 to 12 inches is supposed to be where .22LR velocity usually peaks, then drops as you switch to longer barrels.
Best solution would probably be a 1in9 twist .223 barrel blank with a .22LR chamber, but the bore would be a fraction of a hair oversize for the .22LR projectiles.
I’m taking up the .22 PRS game and when I’m testing ammo to find out what my rifle likes best I’ll also get velocities. Sorta important for getting feedback from a ballistic calculator for rough ideas about come ups. But it what the reality is, as seen by actual shooting, that’s important.
I have some of those 60s on hand but I don’t remember them stabilizing. (Pitter patter of feet receding and returning) Yup. 2 of them shot out of the box of 50. I never even completed a 5 round group.
I have some and they will shoot minute of neigbors cat at 50 yards . And they hit like a sledge hammer .
those rounds pattern like a shotgun without the correct rifling twist…
…or a longer barrel. I like the faster twist idea better. With 22lr the longer barrels friction starts to decrease velocity.
Lija has stock 10-22LR barrels that are as fast as1:9.
I use it in my remington 541t with a 24 in barrel and get good results . But not as good as federal gold metal match ammo.
The heavier the bullet does sound sweet but with the predominant ampunt of 22 rifles being of the slower twist rates it seems to me sticking with the 40 gr stuff is still the best overall option due to lack of stabilization and having to buy another gun jist to support a heavier ammo.
I want a 1:9 T shorty for heavy subs…
Barrel is a cheap 16" 1in9 twist heavy profile 5.56 barrel I picked up on sale from somewhere. Gas port was blocked by installing a low profile gas block backwards. CMMG .22LR conversion unit (originally had a Ciener unit in it, but that got moved to another rifle, at some point) and BDM magazines with the metal feed lips. Scope is a Barska that I got on clearance for around $50 (the scope mount was more expensive than the scope).
I got it reliably cycling with the Aguila 60gr subsonics right about the time Sandy Hook happened, then I didn’t see another box of Aguila subsonics for the next couple years, until I saw some at a gun show with a $90 per box pricetag.
Lacking a supply of the ammo I pretty much built the rifle for, the rifle got put away and almost forgotten about. Earlier this afternoon, I was digging around in my ammo cans and found a box of Aguila 60gr subsonics, so I loaded up a mag and other than a stovepipe on the first round, it seemed to function just fine on the pistol range behind the house.
Clearing the rifle range to test it for accuracy is going to be a bit of a project (I really could use a bushhog).
My thought also. The 22 PRS game I’m moving to I told myself that I will NOT be buying another gun to play it. I had to buy the 'scope and minor stuff, but no more guns in the safe. I’ll try the 60s again, but I don’t have high hopes.
I did ask at the LGS where I bought the 60s if anyone was getting them to stabilize and the answer was the Ruger .22 PR. I have no idea what twist it has. I assume 1:9 but I don’t know.
I thought about that too, but covid came along and changed everything. I may revisit it at some point as a 22LR upper with a 1:9.
Current thinking is still a CZ 457 and eventually a full suite of barrels. I understand @BrianK point about having to draw the line somewhere, but funds draw the line at this point.
The Ruger 22 PR is 1:16 in LR with a 18" Barrel. The 22 mag ver is 1:14 with a 18".
Yeah, I didn’t think it had a fast twist.
Re: more guns in the safe… I’ve actually been selling guns off. I’m getting older and guns that I don’t use much anymore? No need to hold onto them. I hate to see old friends leave, but that’s the way it is. On to new homes for them where hopefully they’ll get the same care that I gave them.
I also have more than I will use at this point in life and health and need to get rid of some.
That was part of my reasoning for the build.
The lower was originally for another upper that I put together, then got hung up on the $800 price of the scope I wanted for it and the long drive to a range that had enough room to actually make use of that scope and the upper’s 24" barrel.
I think I had most of the parts on hand for the upper for this particular build, other than the barrel, and I saw the barrel on sale for less than I had previously seen similar barrels.
And if it didn’t work out, I could just take the upper apart and put the components in the spare parts bin. It’s not an ideal solution, since the barrel’s bore is one or two thousandths larger than needed, and the conversion units themselves can have a small negative impact on accuracy, but It’s something that could be thrown together to try out, without ordering a custom barrel.