Help me decide which 22LR bolt action

On rimfire central some were saying to shoot 50-75 rounds of the same brand before testing groups.

1mechanic said:

On rimfire central some were saying to shoot 50-75 rounds of the same brand before testing groups.

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I have 700 rounds down this barrel now and have been shooting Norma TAC22 for the past 400+ rounds now.

To your point, the serious rimfire benchrest guys at my local club (one who places in the nationals every year) have said similar things about at least 20rounds if you switched ammo to settle in due to different lubricants and lead composition.

When I was testing different makes and RN verses HP of 22 RF ammo. I found the quickest way to change shells, Use Kano Kroil on patch wait a few minutes, The bronze brush and then patches. About 5 rounds and barrel was happy with next batch of ammo.

There's some really good information in this thread, thanks to all for sharing.

I run a bore snake thru the barrel when I switch ammo during a range session

I haven't read all of the posts, in fact - very few!

I see that you folks have some remarkable shooting rifles and I hope that the OP is very happy with his decision.

I realize that I'm very late to the party, and it appears that the rifle I was going to mention,is no longer produced. The Ruger 77/22 in 22 LR.

We bought a pair of them about 20 years ago. We got the SS, teflon coated, laminate stocked version. They shot pretty fair with bulk 22 LR in the Remington HP version….5 shots @ 100 a bit larger than a quarter.

We had a specific purpose in their purchase…..to do a lot of shooting inexpensively. They're fairly heavy rifles, and we wanted a rifle that would fairly closely replicate our hunting rifles, Winchester Model 70's……in weight and safety operation. The original trigger was awful, but a aftermarket trigger assembly remedied that.

They can't match or haven't shown the accuracy of some of the rifles shown here. While we don't shoot them as much as we should……wouldn't sell them for 3 times the amount we paid for them! memtb

I have a CZ 457 with a 24 1/2 " barrel. I cannot get it to shoot with my CZ 452 Varmit. The 457 shoots the CCI sub sonic slower than my 452 Varmit. I am wanting to start by cutting the barrel to 20", Try it and go to even shorter if I have to. It sometimes takes shorter barrels to get the speed right for barrel twist and ammo to shoot good.

LoneTraveler said:

I have a CZ 457 with a 24 1/2 " barrel. I cannot get it to shoot with my CZ 452 Varmit. The 457 shoots the CCI sub sonic slower than my 452 Varmit. I am wanting to start by cutting the barrel to 20", Try it and go to even shorter if I have to. It sometimes takes shorter barrels to get the speed right for barrel twist and ammo to shoot good.

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Both my CZ452 and CZ457 like SK Standard Plus 22LR ammo. They do pretty good groups (<0.5 at 50yds 10 rounds) with most quality ammo within 1080 plus or minus 20 fps. Those that stay closer to the 1080 hold at distance too. Normal match ranges are up to 300 yards, but occasional to 500 yards.(this shooter can do 3 out of 5 on 24x24" plate 7 out 10 36x36" with old eyes and a bit shakey, rear bag n bipod) An opinion only - cutting down the barrel, unless damage or bent alone with not improve groups like better ammo.