New Farm gun

Hi Guys ,

Just picked up a new Howa mini action rifle in 6.5 grendel , going to see what its like as a general use farm gun , hoping to get it running 95gr bullets ? , I know most use the heavier 120-123gr bullets , But 95gr will be more than enough on Mr goatie , now I just need some days OFF & gaps in the rain to run some reloads thru her .
Using XBR 8208 powder & CCI 450 primers , amax 95gr & Lap brass .

Cheers Chris

Attachment 93438

Hornady developed the 123 gr amax and sst for this Calibre and it's velocity window.

I used the 123 sst with 28gr WW748 and a mag primer for 2350fps.

Deadly on the goats to 300m.

Amaxs were just as effective.

The new Sierra 107 TMK might be worth a try. If you want more speed the Hornady 100grain interlocks also do the job.

Cfe223 100gn sierra varminter
32.3gn
Col 2.200”
Lapua brass
Cci br4

Shoots .5 no worries and better if I really concentrate

Quote:

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Originally Posted by 300_BLK

Hornady developed the 123 gr amax and sst for this Calibre and it's velocity window.

I used the 123 sst with 28gr WW748 and a mag primer for 2350fps.

Deadly on the goats to 300m.

Amaxs were just as effective.

The new Sierra 107 TMK might be worth a try. If you want more speed the Hornady 100grain interlocks also do the job.

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How much of a difference does a mag primer make?

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Originally Posted by Max Headroom

How much of a difference does a mag primer make?

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Fuck knows.

Big pile of ball powder usually likes a hot primer to ensure consistent results. But farked if I'm gonna do a comparison.

Look up rifleshooter.com for some articles on compared primer sizes in 6.5 Topknot

Thanks for the reloading tips , OK , my take on the Magnum primers on the 6.5 Grendel , is not to ignite the powder , BUT to handle the high pressure this calibre operates at , similar to the 6.5 CM , and other 308 size cases using a small primer pocket , in short to stop a primer cup being pierched by high pressure gas .
I also think rifles for these cals , should have a smaller dia firing pin , because of small dia of the smaller primer in comparsion to the Large rifle primer .

Any ways , the rifle has is running a ODL QD TI suppressor , and it suits its size , my concern is the plastic stock , I think its touching the barrel , will have to maybe sand the barrel channel bigger as a temp measure , I would like to put it into a laminated wood stock later .

Cheers Chris

Quote:

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Originally Posted by ChrisF

Thanks for the reloading tips , OK , my take on the Magnum primers on the 6.5 Grendel , is not to ignite the powder , BUT to handle the high pressure this calibre operates at , similar to the 6.5 CM , and other 308 size cases using a small primer pocket , in short to stop a primer cup being pierched by high pressure gas .

Your right about why it is used in the Creedmoor,lapua etc. But the Grendel isn't a high pressure cartridge I'm pretty sure it has a fairly load max load of 58000psi.

I also think rifles for these cals , should have a smaller dia firing pin , because of small dia of the smaller primer in comparsion to the Large rifle primer .

Any ways , the rifle has is running a ODL QD TI suppressor , and it suits its size , my concern is the plastic stock , I think its touching the barrel , will have to maybe sand the barrel channel bigger as a temp measure , I would like to put it into a laminated wood stock later .

Those Hogue stocks are teribbly flexible. Might be worth stabilizing the foreend or a boyds if they make them.

Cheers Chris

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How's the action handle? They are a cool little rifle

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Originally Posted by Stocky

How's the action handle? They are a cool little rifle

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My mini is just a synthetic stock not a houge
Awesome set up
Ive got a 20 inch tube on mine and it’s a very compact nice rifle

Quote:

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Originally Posted by ChrisF

Thanks for the reloading tips , OK , my take on the Magnum primers on the 6.5 Grendel , is not to ignite the powder , BUT to handle the high pressure this calibre operates at , similar to the 6.5 CM , and other 308 size cases using a small primer pocket , in short to stop a primer cup being pierched by high pressure gas .
I also think rifles for these cals , should have a smaller dia firing pin , because of small dia of the smaller primer in comparsion to the Large rifle primer .

Any ways , the rifle has is running a ODL QD TI suppressor , and it suits its size , my concern is the plastic stock , I think its touching the barrel , will have to maybe sand the barrel channel bigger as a temp measure , I would like to put it into a laminated wood stock later .

Cheers Chris

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The difference between Mag and normal primers is how much spark they produce to ignite the powder, not how thick the primer cup is.

You will find cup thickness is different between brands.

This article looks at the difference between primer sizes, small are understood to be more consistent than large and therefore produce smaller groups. Large produce better velocity and are more reliable in cooler temps.

https://rifleshooter.com/2018/05/doe...ss-comparisons

Also, for a given pressure force = pressure * area. So for a smaller primer there is less force trying to push it out.

Yeah ,

Nice little rifle , so far accuracy so so , its about 1.25 inches at 100yds , holds 2 then throws 1 out , hope its the touching stock , its early days its only had 17rds thru it so far , its the No6 contour HB barrel , so 20 inche & threaded from factory .
A guy in the US has dropped one into a wood stock & modied the std flush trigger guard to fit , ie he has buffed the magazine & plastic housing out , looks real nice .
The new 223 Howa's are meant to all have 1-8 twist barrels from mid this yr on , maybe Howa will make a flush fitting trigger guard for the Mini ? , as a option .
CZ also have brought out a sporter weight & a HB barrel CZ527 in 65gren , I think a CZ527 Varmint , with laminated stock & in 6mm Grendel would be a neat varmint gun .

If its a houge stock @ChrisF you’ll need to stiffen that foreend
Houge stocks have to much flex in the barrel channel and contact the barrel when you grip the stock this is the Cause of howas with accuracy issues or shooting flyers

Easy fix though just epoxy in some more support

With the 4 ive seen fixed or fixed myself
Just ali arrow sharfts long ways up the barrel channel and the hole channel filled with epoxy
To just below barrel level so the barrel is free floating still

Mine shoots like this
Attachment 93492

And from my experience with howas yours will to
Get that stock sorted mate trust me

Confusion regarding cup thickness results from the fact that Remington introduced the 7-1/2 primer with a thicker cup, due to pierced primers in hot .223 Remington (and probably .222 Remington Magnum) loads. That, in and of itself, should not have caused confusion BUT lazy ‘gun writers’ have developed the habit of calling the Remington 7-1/2 primer a magnum primer, whereas, in fact, it contains exactly the same primer mixture as the Remington 6-1/2 and THE ONLY DIFFERENCE between the two Remington primers IS THE THICKER CUP. OF THE 7-1/2 PRIMER.

Quote:

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Originally Posted by ChrisF

Yeah ,

Nice little rifle , so far accuracy so so , its about 1.25 inches at 100yds , holds 2 then throws 1 out , hope its the touching stock , its early days its only had 17rds thru it so far , its the No6 contour HB barrel , so 20 inche & threaded from factory .
A guy in the US has dropped one into a wood stock & modied the std flush trigger guard to fit , ie he has buffed the magazine & plastic housing out , looks real nice .
The new 223 Howa's are meant to all have 1-8 twist barrels from mid this yr on , maybe Howa will make a flush fitting trigger guard for the Mini ? , as a option .
CZ also have brought out a sporter weight & a HB barrel CZ527 in 65gren , I think a CZ527 Varmint , with laminated stock & in 6mm Grendel would be a neat varmint gun .

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@ChrisF 22 PPC AKA 22 Grendel maybe a good one? similar ballisitics to a 22-204 Ruger, 75 amax @ 3100 from sub 30 grains...

That would be a neat gun

Back on the subject of primers... This is interesting, but could be old news to some. Primers And Pressure