Zeroing a 22 rifle

[tweedledee]

well said Kent .bang on the money as usual

[bear-uk]

These are in a silver box and I think some are grouping and others are flying all over the place. I Thought the 15 yd 1st zero and the 50 yd second zero would give me an idea of the flight trajectory, The rabbit was sat about 10 yds into the field and about 55 yds from me, the bullets were hitting the hawthorn hedge.

[farmer7]

The wind should be less pretty much all subs are 4" at 100 yds FV 10mph, HV shouldn't be more with a std weight bullet I shouldn't have thought.

Actually HV .22 bullets drift more in a crosswind than subsonics. The shock wave around the faster bullet causes more resistance and decreases bc and a partly adheres to the bullet, subsonics have a much smoother, easier flight with less drift in comparison and usually more accurate. Hence the reason target ammo is subsonic.

[kent]

Actually HV .22 bullets drift more in a crosswind than subsonics. The shock wave around the faster bullet causes more resistance and decreases bc and a partly adheres to the bullet, subsonics have a much smoother, easier flight with less drift in comparison and usually more accurate. Hence the reason target ammo is subsonic.

 

That's an interesting theory, Were did you read this? however the reason HV not a common target round is actually the fact that a sub sonic never enters the transonic zone as its already under it as it leaves the muzzle. A bullet fired over the speed of sound has at some point to drop back through it as this critical point nears the bullet de-stabalises even before dropping through. Many HV rounds get their speed (like the stinger) from a lighter bullet with a lower BC- not all but some, my original point. This speed grabbing through lighter bullets is just like a 40 grn bullet from a .223 rem compared to a 69 grn, some users buy muzzle speed blindly unaware of down range losses

[farmer7]

 

That's an interesting theory, Were did you read this? however the reason HV not a common target round is actually the fact that a sub sonic never enters the transonic zone as its already under it as it leaves the muzzle. A bullet fired over the speed of sound has at some point to drop back through it as this critical point nears the bullet de-stabalises even before dropping through. Many HV rounds get their speed (like the stinger) from a lighter bullet with a lower BC- not all but some, my original point. This speed grabbing through lighter bullets is just like a 40 grn bullet from a .223 rem compared to a 69 grn, some users buy muzzle speed blindly unaware of down range losses

Thats not a theory its a fact. Put the numbers in a ballistic calculator for yourself .

 

Also I didnt mean its because subsonics drift less in wind that they're chosen for target work , I meant as you say, that as they dont go supersonic they aren't buffeted and de-stabilised dropping back through the sound barrier and hence usually more accurate.

[kent]

Thats not a theory its a fact. Put the numbers in a ballistic calculator for yourself .

 

Also I didnt mean its because subsonics drift less in wind that they're chosen for target work , I meant as you say, that as they dont go supersonic they aren't buffeted and de-stabilised dropping back through the sound barrier and hence usually more accurate.

I might if I understood what I was supposed to put in we are getting pretty specific here

[farmer7]

I might if I understood what I was supposed to put in we are getting pretty specific here

I thought you were doubting the fact that subsonic .22's actually drift less than HV bullets in a crosswind, was just saying to try running the numbers through a calculator to see for yourself! No offence intended!

 

The BC I'm using is 0.132 with mv of 1330. Try it at 1330 and 1050.

[Sx3 clay breaker]

50 yards for me not much high at less and 3 mild it's at 100

[kent]

I thought you were doubting the fact that subsonic .22's actually drift less than HV bullets in a crosswind, was just saying to try running the numbers through a calculator to see for yourself! No offence intended!

 

The BC I'm using is 0.132 with mv of 1330. Try it at 1330 and 1050.

 

In fairness ballistic calculators are notoriously un-reliable with .22 rf and air pellets, something to do with the drag functions used. I had a long debate with the Chairgun guy in the past on this, I like to test to confirm all such data . I fear the test might not tell the true tale but I will give it a go with equal bullet weights in the field although the BC of each will be different due to brand as I have a few different HV knocking about at present

[jamiedenny]

Does anyone use hv rounds for .22rf ?. Either pest control or target, unless they happen to be more accurate there isn't much to gain.

[Dekers]

Does anyone use hv rounds for .22rf ?. Either pest control or target, unless they happen to be more accurate there isn't much to gain.

 

Back in the day I used an assortment of HV in my .22lr for field work, I seem to recall I got the best overall results with CCI Velocitors (40g HP) and Rem Yellow Jacket (32g/33g? HP).

 

Neither really gave much advantage for the simple reason that what they gained in power they lost in accuracy.

 

I have had the luxury of choice for many years now and both my current .22lr are dedicated Subsonic tools and if I need more I use my HMR or WMR, both of which are much more accurate than a .22lr with HV and deliver more clout as well!

[kent]

Does anyone use hv rounds for .22rf ?. Either pest control or target, unless they happen to be more accurate there isn't much to gain.

 

Subs 99.99% of time, my HV have all been acquired. I now jump for .22 subs to .22 hornet no need for a HMR or WMR

[jamiedenny]

thats what i though.

 

someone mentioned the WMR... i think its a cracking round and real clout over the hmr, always found it easier to shoot but really isn't popular ?. i guess the hmr has all the glam :-).

[kent]

thats what i though.

 

someone mentioned the WMR... i think its a cracking round and real clout over the hmr, always found it easier to shoot but really isn't popular ?. i guess the hmr has all the glam :-).

Worse on wind, not loaded for the same degree of accuracy. Its a Southern girls handbag round for defence