.270Win 110gr sierra #1810 ProHunter MV

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.270Win 110gr sierra #1810 ProHunter MV

Post by MtnMan » 19 Jan 2022, 7:33 pm

just wondering if someone could give a ball park figure for MV of this bullet using 35gr of AR2206H in a 24" barrel?

Looking to make a reduced youth load for pigs, goats, fallow sized game. Don't want too high MV as sierra says performance on such game at high velocity maybe too explosive. They say at moderate velocity it performs well on game of this class.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by disco stu » 21 Jan 2022, 9:01 am

There is a free alternative to quick load that might help you here. Called GRTools. I downloaded it a week ago to have a play.

I've talked to one guy who compared quick load to GRTools in a few different powders, cartridges etc and found them close or the same. Obviously both are theoretical, but I'm thinking being a common powder there would have been lots of calibration to chronographs etc so should give you a pretty good idea. Not hard to use I found.

Hope this helps
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by geoff » 21 Jan 2022, 12:30 pm

MtnMan wrote:just wondering if someone could give a ball park figure for MV of this bullet using 35gr of AR2206H in a 24" barrel?

Looking to make a reduced youth load for pigs, goats, fallow sized game. Don't want too high MV as sierra says performance on such game at high velocity maybe too explosive. They say at moderate velocity it performs well on game of this class.


I ran this through GRT and got the following results. Computational estimate only of course, your rifle will vary to some degree, but this is a ballpark estimate apparently:

Image

Reducing smokeless powder loads by a considerable amount can present its own set of hazards, particularly inefficient and unpredicatable burning rates. A certain level of confinement is your friend in a rifle cartridge. You should do some reading on this if you are not familiar with it.

I dont load for 270 and never have so I can't say whether it's a good idea or not but be careful.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by Oldbloke » 21 Jan 2022, 1:17 pm

Find out how to get GRTools here.

https://youtu.be/8uWRwXPKg24

https://grtools.de/
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by bladeracer » 21 Jan 2022, 2:00 pm

MtnMan wrote:just wondering if someone could give a ball park figure for MV of this bullet using 35gr of AR2206H in a 24" barrel?

Looking to make a reduced youth load for pigs, goats, fallow sized game. Don't want too high MV as sierra says performance on such game at high velocity maybe too explosive. They say at moderate velocity it performs well on game of this class.



ADI data is 45gn making 3113fps and 47.5gn making 3215fps, so 100fps difference for 2.5gn, when the case is almost full.
Reducing by another 10gn will drastically increase empty case volume so I would _guess_ velocity will be down around 2200-2500-ish. It's a light bullet so it's still going to be traveling even on 20gn of powder, I doubt it'll be under 2000fps yet. And you are still burning a lot of powder, 50% more than a .223 load.

If you don't have a chronograph, shoot a 5rd group at 100m and 200m and measure the drop, then calculate the _rough_ velocity back from that. If you change the load you will have to re-zero at 100m again before shooting it at 200m. If it's zeroed at 100m, at 200m it'll be about 110mm low at 3000fps, 140mm low at 2750fps, 180mm low at 2500fps, 240mm low at 2250fps, 310mm low at 2000fps and so on. You could try zeroing at 50m and measure 100m drop, but it'll be less precise. 100m drop will be about 38mm at 2000fps, 22mm at 2250fps, 10mm at 2500fps, 0mm at 2750fps, about 3mm high at 3000fps.

You might find it difficult to get good accuracy with so much empty volume though, Trailboss would be a better choice, if you can get it. Or you could try a filler.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by MtnMan » 21 Jan 2022, 5:54 pm

thanks!
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by MtnMan » 22 Jan 2022, 4:08 pm

I played around with my chrono and got it working again.
3 shot average was 2264fps. My barrel is 20" not 24" too by the way.

I will load some more with the aim of getting them up around 2500fps. This will be the same as factory loads in a 6.8SPC.

Must say there is a very noticeable reduction in recoil from my 130gr hot loads. A light recoiling, terminally effective inside 100m hunting round is what I'm after for the lad.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by bladeracer » 22 Jan 2022, 4:47 pm

MtnMan wrote:I played around with my chrono and got it working again.
3 shot average was 2264fps. My barrel is 20" not 24" too by the way.

I will load some more with the aim of getting them up around 2500fps. This will be the same as factory loads in a 6.8SPC.

Must say there is a very noticeable reduction in recoil from my 130gr hot loads. A light recoiling, terminally effective inside 100m hunting round is what I'm after for the lad.


It doesn't require a huge reduction in velocity to significantly reduce recoil and noise, and throat erosion and brass wear. Changing bullet weights, but still pushing them hot doesn't make a whole lot of difference to felt recoil, for me.

The 110gn bullet is not currently listed on Sierra's site, so don't waste them if you don't have plenty, you may not find them anymore.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by MtnMan » 22 Jan 2022, 5:15 pm

Bloody typical!! It's fkn amazing how often that happens. find something that you want only to find out it's no longer made.

Anyway, I tried 39gr AR2206H and a 3 shot average was 2530fps. I'll shoot a few at this to check point of aim vs my normal load and see how they perform.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by bladeracer » 23 Jan 2022, 2:21 pm

MtnMan wrote:Bloody typical!! It's fkn amazing how often that happens. find something that you want only to find out it's no longer made.

Anyway, I tried 39gr AR2206H and a 3 shot average was 2530fps. I'll shoot a few at this to check point of aim vs my normal load and see how they perform.


It is bloody annoying :-)
There are other options though if you decide you like lighter bullets.
Speer do the 90gn TNT for smaller varmints.
Sierra do the 115gn SMK.
Hornady's 110gn VMax is readily available, but may be a bit light for larger beasts, the 120gn SST might be better then. They also do the 110gn BTHP Match which might work okay on smaller beasts. Or their new copper bullet, the 110gn CX looks worth investigating - Cleaver don't list them yet so they're probably a year or so from reaching us yet. https://www.hornady.com/bullets/rifle/270/6.8-.277-100-gr-cx#!/
Barnes do the copper TTSX 90gn and 110gn which should work well on bigger stuff. They also do the 85gn copper TSX.
Nosler do the 100gn and 110gn Accubond - I like Nosler but they're too expensive for everyday usage for me.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by Blr243 » 23 Jan 2022, 6:48 pm

Blade I’m glad u posted the link for the copper Hornsby 100 grainers , Shane they are so far away. I’m currently useing the 90 Speer Tnt
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by bladeracer » 23 Jan 2022, 7:28 pm

Blr243 wrote:Blade I’m glad u posted the link for the copper Hornady 100 grainers , Shame they are so far away. I’m currently using the 90 Speer Tnt


I switched to the 7mm TSX and TTSX just for deer, they're expensive (about $2.50 apiece), but the number of deer I'm likely to shoot probably won't even use a full box of each in my lifetime.

If Hornady has something that works as well as the Barnes, for less money I definitely want to try them. They already had the GMX (no longer) and Monoflex (only in .308" and .458" tube mag) copper bullets. The NTX bullets are non-lead but are not engineered expansion, just powdered copper.

The CX 80gn in the .243 and the 120gn in the 6.5mm should work better than heavier copper-jacketed-lead bullets.

One place had the 150gn 7mm CX for US$67/50, the 150gn GMX at US$60/50, and the 150gn ELDX at US$70/100 (A$78/100 at Cleaver), so they're likely double the price of the ELDM's, around A$1.80 apiece. The 150gn TSX is about $2.20 and the TTSX about $2.25 apiece currently.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by MtnMan » 19 Oct 2022, 8:10 pm

Update with terminal performance report-
Shot a young fallow buck at 20m, quartering on. Entered in front of shoulder finished under the hide at the last rib on the far side. Massive damage inside. Bullet stayed in one piece with good weight retention. Very happy with this load. Shoots dead on at 50m, slightly low at 100m. Very pleasant to shoot.

Just hoping I can find some more somewhere. If you have some you don't want let me know.
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Re: .270Win 110gr sierra #1810 ProHunter MV

Post by 6878mm » 21 Oct 2022, 10:24 am

You have a PM
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