Sig Sauer ASP20

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   Hi Kruza,
I too use holdover/holdunder with mildots at a chosen scope magnification (x16).

I build my Ballistic Charts from 10yds-100yds, at 5yds intervals - eg: 10yds, 15yds, 20yds, etc...

I do all of this manually by moving the targets to the desired range, shooting my groups and then checking through my scope to determine how many mildots above/below I need to holdover/holdunder from zero, at each chosen range.

I'm mentioning this because I believe everyone's scope differs and if you use only Chairgun (or similar) to setup your Ballistics Chart, it won't take into account the specific optics of your specific scope at each range.

Does that make sense?

Not only that but it's also fun discovering your particular gun by walking up and down the range, moving targets 5yds at a time and using your own scope to determine the amount of mildots you'll need to holdover/holdover at each and every range.

It's time consuming but it does give results relevant to your particular gear, rather than relying on generic electronic calculators like Chairgun, etc...

And it's interesting what you find if you do it manually - for example, on my particular scope on my S410 PCP, there's a point (135yds) where the holdover is the same as at 130yds! The holdover (9 mildots) should of course have increased from 130yds to 135yds - but it doesn't! It's just the optics of my particular scope that, after focusing at 135yds, I have to use the same number of mildots holdover as at 130yds!!

Odd but true! And I would not have discovered this if I'd just used Chairgun alone....

Hope this all makes sense?

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Myson Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 06 Mar 2016 Location: Feilding Status: Offline Posts: 182	Post Options Post Reply Quote Myson Report Post Thanks(0) Quote Reply Posted: 05 Jan 2023 at 8:15am
	Hi Kruza, I too use holdover/holdunder with mildots at a chosen scope magnification (x16). I build my Ballistic Charts from 10yds-100yds, at 5yds intervals - eg: 10yds, 15yds, 20yds, etc... I do all of this manually by moving the targets to the desired range, shooting my groups and then checking through my scope to determine how many mildots above/below I need to holdover/holdunder from zero, at each chosen range. I'm mentioning this because I believe everyone's scope differs and if you use only Chairgun (or similar) to setup your Ballistics Chart, it won't take into account the specific optics of your specific scope at each range. Does that make sense? Not only that but it's also fun discovering your particular gun by walking up and down the range, moving targets 5yds at a time and using your own scope to determine the amount of mildots you'll need to holdover/holdover at each and every range. It's time consuming but it does give results relevant to your particular gear, rather than relying on generic electronic calculators like Chairgun, etc... And it's interesting what you find if you do it manually - for example, on my particular scope on my S410 PCP, there's a point (135yds) where the holdover is the same as at 130yds! The holdover (9 mildots) should of course have increased from 130yds to 135yds - but it doesn't! It's just the optics of my particular scope that, after focusing at 135yds, I have to use the same number of mildots holdover as at 130yds!! Odd but true! And I would not have discovered this if I'd just used Chairgun alone.... Hope this all makes sense?
	https://www.youtube.com/watch?v=eq7jVyBfFqE Air Arms S510 US .22 Air Arms S410 .22 Weihrauch HW97KT .177 Weihrauch HW95 .177

kruzaroad Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2284	Post Options Post Reply Quote kruzaroad Report Post Thanks(0) Quote Reply Posted: 04 Jan 2023 at 3:31pm
	That's sweet. Gonna resight sig for 28m (if the wind ever stops) Turns out (according to gun chair) With my weight pellet .67gm and volicity 897fps, it will give me a lot better hold over readings on mildots. .5=37m,1=44m,1.5=50m,2=55m, 2.5=60m,3=65m, 3.5=69m,4=73m,4.5=77m,5=81m Which is awsome for the 50m to 65m range, which is where I need to be for hunting hare here. With 20m and 25m just above the windage line. Lot easier to rember than last sighted zero.

Billbobnz Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 Jun 2020 Location: Ashburton Status: Offline Posts: 867	Post Options Post Reply Quote Billbobnz Report Post Thanks(0) Quote Reply Posted: 03 Jan 2023 at 4:33pm
	Those are great groups for 50m. Not sure on dropping the fps without using slightly heavier pellets. Others may have some ideas.

kruzaroad Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2284	Post Options Post Reply Quote kruzaroad Report Post Thanks(0) Quote Reply Posted: 03 Jan 2023 at 3:02pm
	So just ran sig over chrono with pellets for hunting hi 905fps lo 897fps Ave 897 fps If like to drop that around 850fps, what would be best way to do that with out increasing pellet size.

jwabfrog Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 12 Nov 2021 Location: Thames Status: Offline Posts: 142	Post Options Post Reply Quote jwabfrog Report Post Thanks(0) Quote Reply Posted: 03 Jan 2023 at 11:10am
	Insane 50m groups, well done mercs!

Myson Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 06 Mar 2016 Location: Feilding Status: Offline Posts: 182	Post Options Post Reply Quote Myson Report Post Thanks(0) Quote Reply Posted: 03 Jan 2023 at 7:10am
	Nice one Mercs! Those groups are superb at 50m! I'm still waiting for less wind to continue my testing but I'm hoping my groups turn out like this!
	https://www.youtube.com/watch?v=eq7jVyBfFqE Air Arms S510 US .22 Air Arms S410 .22 Weihrauch HW97KT .177 Weihrauch HW95 .177

mercs Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 24 Apr 2020 Location: Stratford Status: Offline Posts: 272	Post Options Post Reply Quote mercs Report Post Thanks(0) Quote Reply Posted: 02 Jan 2023 at 3:56pm
	Wind disappeared for a few hours so back out with .177 on 50 metre range for some fun. Scope Tasco 3-9x40AO set at x9 Bench rest with rifle on bag instead of bipod. H&N pellets I note the Baracuda variation is vertical but Hunter Extreme variation was horizontal. First shots of the group are tight then deviate so most likely something I am doing. Next time out the first 2 rabbits within 50 metres are in trouble. H&N Baracuda 0.69g OD 37.3mm Well worth working with. H&N Hunter Extreme 0.62g OD 37.8mm Low penetration and or pellets fell out. Edited by mercs - 02 Jan 2023 at 4:02pm

kruzaroad Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2284	Post Options Post Reply Quote kruzaroad Report Post Thanks(0) Quote Reply Posted: 31 Dec 2022 at 8:04am
	Hey mercs just went back to look at your volicities, you are shooting right in the transonic range with your 177. That volicity is the most unstable for pellets. Two of the pellets you mention are smack in worse zone. It could explain the wider spread for the 177.

Billbobnz Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 Jun 2020 Location: Ashburton Status: Offline Posts: 867	Post Options Post Reply Quote Billbobnz Report Post Thanks(0) Quote Reply Posted: 30 Dec 2022 at 7:31pm
	nope, i ditched those and cant find them

kruzaroad Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2284	Post Options Post Reply Quote kruzaroad Report Post Thanks(0) Quote Reply Posted: 30 Dec 2022 at 7:10pm
	Got open sights? Quickest way to check a scope.