HW100S Warm Vs Cold Temperature Test

[@davidpaylor5666]

I was aware that this happens, especially on a long walk around outdoors in the cold, but never seen it so well illustrated. Nice one.

[@OutdoorsBritain]

@@davidpaylor5666 Thank you for your comment. 👍🇬🇧👍

[@Lonewoodsmandan]

That makes a lot of sense now. I took my hw100 out shooting in the cold the other day and it was shooting low. And got lower and lower the longer I was out. I will do some more testing now and see what results I get. Cheers for that my friend 👍🏕🔥🇬🇧

[@OutdoorsBritain]

@@Lonewoodsmandan Thank you for your comment. Mine kept shooting lower and lower the colder it got the other night, I rezeroed and went back out and the POI dropped even lower so I did this experiment. Your welcome. 👍🇬🇧👍

[@Lonewoodsmandan]

@@OutdoorsBritain I couldn’t understand why. But watching your video the other day and seeing how yours was doing the same and the experiment you just done makes sense now. Thanks again mate. See you in the next 1. Cheers 🍺🇬🇧

[@OutdoorsBritain]

​@@Lonewoodsmandanthank you for your reply. 👍🇬🇧👍

[@Lonewoodsmandan]

@@OutdoorsBritainthank you for replying and sharing with us. Stay safe buddy 👍🇬🇧

[@rapalaron6348]

Great video buddy 👍 One of the reasons i shoot HW springers. Cheers!

[@OutdoorsBritain]

@@rapalaron6348 Thank you for your comment, I'm looking at potentially investing in a HW95 or HW77 or HW97 for winter use. 👍🇬🇧👍

[@rapalaron6348]

@@OutdoorsBritain Good choice buddy. I own six different HW springer models and all are extremely accurate. You have to learn how to control them but i prefer them above my S410. Cheers!

[@charlieriddock2531]

Confirmation shown, just going by whats shown on video, did that first shot after you swapped cylinder already had warm air in from previous cylinder? You didnt show if you purged the air for a shot or 2 to acclimatise the regulator before the 3 degree shots. Great video 👍

[@OutdoorsBritain]

@@rapalaron6348 Thank you for your reply, it's been a while since I last shot a springer at a good distance but I would certainly put in the range time to get back into it. 👍🇬🇧👍

[@OutdoorsBritain]

@@charlieriddock2531 Thank you for your comment, yes I dry fired it a few times before shooting the "cold group" I'm pretty sure that first shot was a flyer. 👍🇬🇧👍

[@DogmanBarrance]

Loving the channel ❤ Down to earth and straight to the point! I’m in the process of pricing up a Weihrauch HW99S in .22. I really enjoy back garden target shooting with springers, but my old Cometa 220 has seen better days. Cheers 👍

[@OutdoorsBritain]

@@DogmanBarrance Thank you for your comment, I'm looking at investing in a springer for winter. I like the look of the HW99 and also the HW95 although there is a bit of a price gap. 👍🇬🇧👍

[@malcolmplowman3172]

Great video that explains some strange fluctuations with the air pressure in my Lyra recently. I thought it was leaking air, but on some occasions I'd check it to find that the pressure had climbed rather than dropped. Cheers 👍

[@OutdoorsBritain]

Thank you for your comment, pressure can also increase in very warm weather too. 👍🇬🇧👍

[@MINI-4X4-RADIO]

Good Demonstration... Cold air is denser and heavier, that is why Ballistic Calculators, and some Scopes have a place for Temperature, to compensate for it. Then there is Humidity, Humid(Damp) Air is denser, again why Ballistic Calculators, and some Scopes have a place for Humidity, to compensate for it.

[@OutdoorsBritain]

Thank you for your comment. 👍🇬🇧👍

[@dconner13]

Myself and some club members understood that the cold and heat affects the pressure in pcp's so we waited until the summer around 27'o celcius left the rifles for an hour or so in direct sunlight.Oh boy be very careful every single one of them tested on the chrono in that heat was over 12 ftlb and i mean way over the legal uk limit,so in a nutshell a 11.5 ftlb shooting .177cal 10.34 grain pellets in winter is fine,but in summer time you could end up in deep trouble if caught.Keep up the good work.

[@OutdoorsBritain]

@@dconner13 Thank you for your comment. I only really shoot in either very early mornings or late at night so I generally avoid the hottest part of the day but that said I'm looking at investing in a decent springer for the coldest and hottest times of year. 👍🇬🇧👍

[@MyMonkey1973]

barrel at room temp on first set. barrel cooler on second set, due to being outside? pellets at room temp on first one? pellets colder due to being outside on second one? Different cylinder type used on second set(rat works aluminum, what is HW orginal made of?) Like george also says below maybe try with a chrono, cold air is going to increase pellet drop over range due to thermal current, when its warmer the warm air rises so must how ever small decrease drop. There seems to be a lot more things that could effect the drop.

[@OutdoorsBritain]

Thank you for your comment, some very good suggestions. I'll be looking at getting a chronograph in the near future for a couple of experiment type videos iv got lined up in the pipeline. 👍🇬🇧👍

[@MyMonkey1973]

@@OutdoorsBritain subbed anyways hope the channel goes well

[@OutdoorsBritain]

@@MyMonkey1973 Thank you for your reply and thank you for subscribing. 👍🇬🇧👍

[@georgesfishingadventures3974]

Maybe a good idea to do this test with a chronograph to see if it makes any difference in the speed of the pellet I’ll imagine so if the pallet is falling lower in the colder conditions

[@themarksmanABP]

Just subbed mate, cool channel. Thinking of grabbing a HW30 or 99 for target and plinking fun. Does air temp affect springers?

[@OutdoorsBritain]

Thank you for your comment, if you're interested in the HW30 then check out the video I did on one if you haven't already, the HW30 is a junior sized rifle and produces less power, the HW99 is an adult size rifle and produces around 11.5ft/lb of power. Thank you for subscribing, as for cold temperatures affecting springers if it does then I wouldn't have thought it would be by as much as it does PCPs. 👍🇬🇧👍

[@themarksmanABP]

@OutdoorsBritain ill check the channel again, i didnt see hw30 vid. Thanks for the reply bud

[@OutdoorsBritain]

@@themarksmanABP thank you for your reply, if you go to my channel and look in the "Air Rifles Kit And Gear" playlist you'll find it in there. 👍🇬🇧👍

[@ADAM-qr7bi]

👍

[@OutdoorsBritain]

Thank you for your comment. 👍🇬🇧👍

[@eskimojulie]

I am guessing that the first shot from the cold cylinder was not as low as the rest because the reg had already replenished itself from the warm cylinder before yo fitted the cold cylinder ?

[@OutdoorsBritain]

@@eskimojulie Thank you for your comment, I'm pretty sure the first shot from the cold cylinder was a flyer, the air in the regulator on the HW100 drains out instantly when the cylinder is removed and when I put the cold cylinder on I dry fired it a few times just to make sure too. 👍🇬🇧👍

[@crazycressy7986]

Should have left the whole rifle outside as the barrel would need to be cold as well as this would of also made a difference

[@OutdoorsBritain]

@@crazycressy7986 Thank you for your comment. 👍🇬🇧👍

[@philipbooth9755]

I’ve similarly known PCPs increase in power in a hot sunny summers day, by up to 2 ft/lbs when set up on a cold day , reg/hammer spring etc . Not many folks realise this.

[@OutdoorsBritain]

@@philipbooth9755 Thank you for your comment, I've had many discussions on the forums/Facebook groups about this and I was surprised by how many people don't realise this downside to PCPs. 👍🇬🇧👍

[@Chris_the_Muso]

A little more than a 2 MOA drop at (was it 20 meters?). The first one went high because the air in the regulator/metering system was still warm. I didn't hear you clear the first shot. The gun itself being cold on the night would also have had an effect, so It's a shame you didn't leave the entire rifle outside to cool down. I'm thinking the reason is the same as the reason for the speed of sound in air being higher at higher temperatures. Heat is energy so higher temperatures result in higher velocities. It's counter intuitive because cold air being denser, you'd think it would result in higher velocity for both but it does not. I'd like to see it replicated with other designs of PCP to confirm that it's not something specific with the mechanics however. Maybe something like a Gamo Coyote which uses a balanced cylinder system rather than a conventional regulator. (It's an excellent engineering solution which is not inferior to a regulator, just different) The more you learn...

[@OutdoorsBritain]

@@Chris_the_Muso Thank you for your comment, the air immediately drains out of the HW100 regulator when the cylinder is removed also I dry fired the rifle a few times when I put the cold cylinder on. But like you said I would like to do a few more experiments with different types of systems like different regulators etc. 👍🇬🇧👍

[@hawkslayers1]

Magpie in the background noise 😂

[@OutdoorsBritain]

Thank you for your comment, I'll get it one day lol 👍🇬🇧👍

[@chrisgreenwood271]

Next test on a springer.

[@OutdoorsBritain]

@@chrisgreenwood271 Thank you for your comment, there is a springer test video planned for the near future. 👍🇬🇧👍

[@Steve_7867]

BTW, the opposite happens with springers.

[@ADAM-qr7bi]

only for GAS RAMS not METAL SPRINGS. refer to the vid by AMERICAN AIRGUNNER titled PELLET RIFLE AIR GUN COLD vs HOT TEST. fast forward to 4:50 for results graph.

[@OutdoorsBritain]

Thank you for your comment. 👍🇬🇧👍

[@OutdoorsBritain]

Thank you for your comment. 👍🇬🇧👍

[@johnpollock4072]

It would be better to leave the full rifle with the same cylinder ...do your room temp group and then get the full rifle down to the outdoor temp and use a thermometer direct on the cylinder...would be even better if you could get the outdoor temp a bit lower that 3

[@OutdoorsBritain]

@@johnpollock4072 thank you for your comment. 👍🇬🇧👍

[@gavinwilln7571]

It is not the pressure that causes the drop in power in a regulated gun as the reg pressure remains the same, it is a drop in the volume of air when released. Just being a Nerd.😜😜😜

[@OutdoorsBritain]

@@gavinwilln7571 Thank you for your comment. 👍🇬🇧👍