175gn 180gn projectiles in 7mm

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175gn 180gn projectiles in 7mm

Post by Member-Deleted » 08 May 2019, 8:08 am

just chasing some info for my 7mm mag is there anybody on here with a 7mag that has a 1-9.5 twist barrel shot or has any idea whether they can be stabilised with that twist the laws of averages say they won't but I've got onto some info from America and some of the benchrest crowd are shooting 175-180gn from a 1-9 twist barrel if they are pushed over 3000fps I have shot 168gn VLDs but they can be shot form a 1-9 /1-9.5 twist i'd like to find some info on them before I buy some i'm wanting to break some boredom by plinking way out till I come good thanks in advance :thumbsup:
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Re: 175gn 180gn projectiles in 7mm

Post by SCJ429 » 08 May 2019, 10:02 am

I tried 175 Grad Slams in a 1:9.5 Rem Mag but couldn't get it to group. I dropped back to 160 and it groups well. The 175 went through the target straight but wouldn't group better than 3 inches. The 160 groups at an inch or just under. I would think longer VLD would have less of a chance to stabilise, could you use something a bit lighter? I have used 150 Sierra Match Kings and they shoot 1/2 inch groups out of a light weight hunting barrel.
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 08 May 2019, 12:37 pm

Yes SCJ429 at present I am running 154gn with very good success but always wanted to run a heavier bullet but because of their expense I thought i'd get peoples opinion on them first but it's probably too much to ask from the 1-9.5 twist thanks for the input mate :thumbsup:
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Re: 175gn 180gn projectiles in 7mm

Post by bladeracer » 08 May 2019, 6:15 pm

just chasing some info for my 7mm mag is there anybody on here with a 7mag that has a 1-9.5 twist barrel shot or has any idea whether they can be stabilised with that twist the laws of averages say they won't but I've got onto some info from America and some of the benchrest crowd are shooting 175-180gn from a 1-9 twist barrel if they are pushed over 3000fps I have shot 168gn VLDs but they can be shot form a 1-9 /1-9.5 twist i'd like to find some info on them before I buy some i'm wanting to break some boredom by plinking way out till I come good thanks in advance :thumbsup:


Order a sample pack from ProjectileWarehouse and find out if they work in your rifle.
https://projectilewarehouse.com.au/collections/284-7mm
I have some 175's and 196's but haven't tried them yet.
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 08 May 2019, 7:54 pm

Thanks bladeracer that might be the best way to go for me cheers
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Re: 175gn 180gn projectiles in 7mm

Post by bladeracer » 08 May 2019, 8:13 pm

Thanks bladeracer that might be the best way to go for me cheers


Short blunt bullets are advantageous when you're getting up in weight. A soft-point will be shorter than a hollow-point, and both will be shorter than ballistic-tips of the same weight.
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 08 May 2019, 8:30 pm

Right -O bladeracer yes I think i'll use a round nose as I only want it for no more than 400yds and just a hunting bullet i'll use them for plinking as well but mostly wild cattle along with my 154gn which I use for everything thanks mate
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Re: 175gn 180gn projectiles in 7mm

Post by bladeracer » 08 May 2019, 8:49 pm

Right -O bladeracer yes I think i'll use a round nose as I only want it for no more than 400yds and just a hunting bullet i'll use them for plinking as well but mostly wild cattle along with my 154gn which I use for everything thanks mate


Woodleigh do the 175gn Protected-Point, Speer Gradslam 175gn is a flat-base SP, Sierra SBT 175gn is a boat-tail so will be longer. And Hornady do the 175gn ELDX but it's a BT which might be troublesome in a marginal twist-rate.
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 08 May 2019, 9:39 pm

Thanks BR I actually was looking up Woodleigh but didn't know what to look for so tar
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Re: 175gn 180gn projectiles in 7mm

Post by deye243 » 10 May 2019, 11:41 pm

I shot the 180 vld berger out of a 1:9.5 out to 1600y on a regular basis but once the temp got below 16-17* forget it and this was at 110' above sea level , might work at altitude but I doubt it ......
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 11 May 2019, 4:03 am

Thanks deye243
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Re: 175gn 180gn projectiles in 7mm

Post by deye243 » 11 May 2019, 3:04 pm

Most hunting pills are shorter and all barrels are different so you just have to suck it and see ......
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 11 May 2019, 6:22 pm

Yeah deye243 I've shot up to 168 vld bergers haven't gone any further I've got the load I want to use in 154gn but i want a heavy pill as well and i'm getting bored so now's the time to play with it
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Re: 175gn 180gn projectiles in 7mm

Post by deye243 » 11 May 2019, 7:10 pm

:thumbsup: :drinks:
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Re: 175gn 180gn projectiles in 7mm

Post by duncan61 » 12 May 2019, 11:33 am

I would like to see how the 175 Woodleighs go on scrub bull.If you wish to start throwing heavier pills you may need to look at .300 WM or .338 now you will have to decide which to take when you go out.The quandry!!!!!
.22 winchester .22hornet .222 .243 7mm rem mag cbc 12g
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Re: 175gn 180gn projectiles in 7mm

Post by SCJ429 » 12 May 2019, 12:23 pm

duncan61 wrote:I would like to see how the 175 Woodleighs go on scrub bull.If you wish to start throwing heavier pills you may need to look at .300 WM or .338 now you will have to decide which to take when you go out.The quandry!!!!!


No Duncan, you need a big bore. These guys throw 400 to 500 grain pills around with ease.

If I already had a 7mm magnum I wouldn't bother with a 30 cal.
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Re: 175gn 180gn projectiles in 7mm

Post by duncan61 » 12 May 2019, 2:54 pm

Totally agree.Its claimed the 338 federal packs a punch.I cant see how but who knows GDB has the opportunity to take out scrub bull so it will be interesting to see the results
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 12 May 2019, 8:59 pm

I knock them down now with the 7mm mag with a 154gn I was just thinking of trying heavier to pass the time if you can't knock a bull down with a 7mm you've missed it all these blokes that buy those big bore rifles to shoot scrub cattle do so because they can and fair enough but they shot buffalo with a 308 for commercial meat for years :thumbsup:
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 17 May 2019, 1:02 am

Up date on the 175-180gn projectiles I've got onto a site and found a person that has tried stabilising them he has to a certain point by pushing them hard but the downside was he shortened the barrel life by half around 460 shots the barrels had major erosion at the lands and cracking and completely shot out around 600 his hunting rifles using average loads and to 160gn projectiles got over 1500 and were still good for hunting this is weighing on my mind and am now very reluctant to try heavy bullets as I can't afford a new 7mag right now if the info is correct so thank to those who helped with their info and i apologise for wasting their time cheers
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Re: 175gn 180gn projectiles in 7mm

Post by SCJ429 » 17 May 2019, 7:51 pm

I am not sure your barrel will be shot out at 600 rounds without very long strings. I have a 300/378 Weatherby which shoots 220 grain pills fast and I did not notice any degradation in accuracy until 1200 rounds. It is far more overbore than a 7mm. I did polish the throat regularly and kept the barrel cool.
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 18 May 2019, 12:32 am

Yeah SCJ429 it sounds iffy to me too but it's too late once the barrel is shot I tried to find that site again but couldn't i'll try again tomorrow I don't know your caliber so are those projectile weights heavy for that caliber same as 175-180gn in 7mag ? I also clean my barrels on all my rifles after shooting be it 1 shot or 50 makes no difference and always kept cool during shooting
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Re: 175gn 180gn projectiles in 7mm

Post by TassieTiger » 18 May 2019, 8:41 pm

Tikka .260 (Z5 5x25/52)
Steyr Pro Varmint .223 - VX 3
CZ455 .22 & Norinco .22 (vtex 4-12, bush 3-9)
ATA 686 U/O 12g & Baikal S/S 12g.
Adler a110 reddot
Sauer 30-06 - VX 3
Howa 300 win mag. SHV 5-20/56
Marlin SBL 45/70
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Re: 175gn 180gn projectiles in 7mm

Post by SCJ429 » 18 May 2019, 10:57 pm

There are a number of things that can help with barrel life but for me using slower cooler powders helps along with using JB bore paste to polish up the throat every 50 rounds.
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 18 May 2019, 11:57 pm

Thanks for that Tassie Tiger good read mate
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Re: 175gn 180gn projectiles in 7mm

Post by Member-Deleted » 19 May 2019, 12:11 am

Also thanks SCJ429 I run 68gn 2217 for 154gn projectile @ 2950fps I've never shot anything any faster than that I chase accuracy not speed I wasn't too worried about the barrel wearing out in a normal period of time for 7mag but was worried by cutting that time in half by shooting heavy for caliber projectiles and this is what I think the post was pointing out but now i'm a little spooked so I will err on the side of caution and stick with the lighter projectiles ie 150-162gn thanks again
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