Thread: Grouping

Originally Posted by deer243

When i said sighting in at 100m is perfered i still stick by that. But that doesnt mean you have to sight it bang on at 100m. My 243 is sighted 1.5 inches high at 100m and my 308 2 inches high and both are good at 200m. Like Matty P said it cuts out alot of variables sighting at 100m rather than 200m. And cant say ive missed any animals from 0-100m in the bush sighting like that

sighting in and zeroing are two different things i still like to bang a few at our 200m

the 25yrd zero worked with open sights.......look at ballistic app eg "pointblank" and 60ish is more like what is needed for 1.5-2" high at hundy, with scope. for what its worth my .270 sits ABOUT 2" high at a hundred and that is where it stays.

Originally Posted by Micky Duck

the 25yrd zero worked with open sights.......look at ballistic app eg "pointblank" and 60ish is more like what is needed for 1.5-2" high at hundy, with scope. for what its worth my .270 sits ABOUT 2" high at a hundred and that is where it stays.

I am looking at a ballistic app lol

Originally Posted by veitnamcam

I am looking at a ballistic app lol

best add in realistic scope height then LMAO had an old .303 with see through mounts one time they were really high so scope sat about 4" above bore....that thing drove me nuts trying to work out zero range for it as it was up and down like a whores drawers..... sighted in 2" high at hundy and we missed over or under most of time..chucked mounts and went back to iron.....

Originally Posted by Micky Duck

best add in realistic scope height then LMAO had an old .303 with see through mounts one time they were really high so scope sat about 4" above bore....that thing drove me nuts trying to work out zero range for it as it was up and down like a whores drawers..... sighted in 2" high at hundy and we missed over or under most of time..chucked mounts and went back to iron.....

Yes that is with a typical scope hight of 1.5-1.65inch c/c thanks.

I've found this good value Cam . Lots of differences but all relevant . Slowing absorbing it in

IMHO any typical deer caliber in a non dial or hold situation should be zeroed(that means on at that range not high or low) in all but the most peculiar situation at 200-250y.
This will put you bang on at typical bush ranges also.
No more than 3 inches high worst case at 125 (7.62x39? )
Point and shoot to 300, if it looks a bit far aim a bit higher !

amazing the difference if you change sight in zero range. 25 yards works out with .270 with 130 grn for a 300ish yard zero but has mid range of over 5"
drop zero range back to 150 yards and first crossing is around 50 yard mark.that is bullet is low till 50yards then above until 150.
(went and had a peek at two different sources before typing that)

Originally Posted by Micky Duck

amazing the difference if you change sight in zero range. 25 yards works out with .270 with 130 grn for a 300ish yard zero but has mid range of over 5"
drop zero range back to 150 yards and first crossing is around 50 yard mark.that is bullet is low till 50yards then above until 150.
(went and had a peek at two different sources before typing that)

Yes but you are going about it all wrong, a slight varience in scope hight or velocity or bc will at 25y will result in a large difference in zero.

Zero actually and in the program at 200-250y ande any varyiance in velocity bc etc will be a matter of a few yards of 25-30 zero

Originally Posted by Munsey

What grouping would you expect from a hunting rifle . At 200 mts and 300 and 400 ? . Talk English pls not moa 's

Grouping only shows the potential of your gun, Its not so important what you'v got as what you do with it !

How many hunters could take their gun out of the bag any random day and put their first 5 shots into a 20Cm Circle at 200m? Ability to sight it in and stay sighted in and Knowing where to aim at each range is the decider .

This is accuracy I'm talking about.

SO, don't stress too much about group size . 5 shots into 5cm @100m is fine for deer . Spend your time and money sighting in and establishing your trajectory out to 3Oom ..A challenging goal would be to get all shots to hit a 10 cm target at 100m, 20 CM target at 200 m and 30cm at 300 m . This is hits not grouping .

Seeing the results at events like the Hihitahi challenge and Ruahine biathlon , among self selected hunters with an interest in shooting, hit rates are around 50% at 300 m .

checking my rifle day before going for 1 week shooting trip, red square is 6cm or 2.25 inches . ..MOA of angle rifle/ load and thats what i expect from the bench, shooting anywhere else i have different expectations . . . R

checking my rifle day before going for 1 week shooting trip, red square is 6cm or 2.25 inches . ..MOA of angle rifle/ load and thats what i expect from the bench, shooting anywhere else i have different expectations . . . R

That's excellent accuracy Rossi.
Not much of a group shown but you already know its grouping capability so can deduce the mean point of impact will be nearby each shot.

Yes very good for a Rossi

Well fuck me. I'm doing it all wrong AGAIN!!. Here's silly me sighting in bang on at 100. And it doesn't matter the calibre, I'm not using or including bricks like a 30-30 etc and the .22 with subs has a 25 metre which is on again at 50 zero which has it four inches low at 75.

And that includes the .223 I shoot rabbits with day in, day out to not much past 200 metres. Now I figure if you start talking about hold over at 300 for deer and other big critters, you better go buy a new rifle. It's fucked. Yes, I'm serious!
Had an apprentice tell me I was doing it wrong too. Said the only way to go was 1.5-2 inches high at 100 so I'm on further out. Funny thing was he shot no more further than me yet missed a few in a bit closer. Go figure. He now runs a 100 zero

As for this getting more accurate further out, that's pretty simple. At three hundred you don't over think it (so long as you don't have the scope wound right up). Put the cross hair on target, yank trigger, in close you can over think it and pontificate around so fucking yourself up. Same goes for high powered scopes.
Which leads onto.....