Another 7mm Blaser Magnum

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10-06-2018, 09:15 PM
Kiwi Greg

Another 7mm Blaser Magnum

A customer supplied me with a Rem 700 that had been blue printed & chambered in 7mm Rem mag with a carbon stock, he wanted a bit more performance.

http://i1004.photobucket.com/albums/...ps54gu9rpo.jpg

Its a nice light hunting rifle, with its Bartlein 26" barrel & T2 Terminator muzzle brake & Timney Calvin Elite trigger I supplied.

http://i1004.photobucket.com/albums/...psow4mzcsl.jpg

It has a rail so I popped one of my load development scopes on it, I knew it was a shooter with this group with only 2 rounds through it to get it zeroed beforehand.

http://i1004.photobucket.com/albums/...psu6qrmeeq.jpg

It was only a starting load but extremely impressive, I tried some 195s for fun & it shot better than I expected given the velocity, not bad for 69-70 grains of powder :)

http://i1004.photobucket.com/albums/...psheysf61u.jpg

So all in all I had a pretty productive day at the range yesterday, it was nice and calm unlike last weekend for the bench rest shoot :XD:
10-06-2018, 09:23 PM
300_BLK

Nice @Kiwi Greg!
10-06-2018, 09:27 PM
Tim Dicko

Quote:

Originally Posted by Kiwi Greg

A customer supplied me with a Rem 700 that had been blue printed & chambered in 7mm Rem mag with a carbon stock, he wanted a bit more performance.

http://i1004.photobucket.com/albums/...ps54gu9rpo.jpg

Its a nice light hunting rifle, with its Bartlein 26" barrel & T2 Terminator muzzle brake & Timney Calvin Elite trigger I supplied.

http://i1004.photobucket.com/albums/...psow4mzcsl.jpg

It has a rail so I popped one of my load development scopes on it, I knew it was a shooter with this group with only 2 rounds through it to get it zeroed beforehand.

http://i1004.photobucket.com/albums/...psu6qrmeeq.jpg

It was only a starting load but extremely impressive, I tried some 195s for fun & it shot better than I expected given the velocity, not bad for 69-70 grains of powder :)

http://i1004.photobucket.com/albums/...psheysf61u.jpg

So all in all I had a pretty productive day at the range yesterday, it was nice and calm unlike last weekend for the bench rest shoot :XD:

pretty nice velocitys out of the 7 blaser. excellent accuracy. what is the max load?
10-06-2018, 09:35 PM
Kiwi Greg

Quote:

Originally Posted by Tim Dicko

pretty nice velocitys out of the 7 blaser. excellent accuracy. what is the max load?

Its enough to make this combinations action start to primary extract.

I have built a few now & they go exceptionally well for their size & capacity
10-06-2018, 10:43 PM
Feebz

Awesome set up & performance. What powder are you using in it Greg?
11-06-2018, 06:38 AM
Kiwi Greg

Quote:

Originally Posted by Feebz

Awesome set up & performance. What powder are you using in it Greg?

I use AR 2225, RL 26 & 33
11-06-2018, 06:45 AM
Echo

Quote:

Originally Posted by Kiwi Greg

I use AR 2225, RL 26 & 33

All mixed together?

What powder are you using for the 180 load shot above?
11-06-2018, 07:34 AM
Kiwi Greg

Quote:

Originally Posted by Echo

All mixed together?

What powder are you using for the 180 load shot above?

Yep all mixed together.....:ORLY:
11-06-2018, 10:24 AM
chainsaw

Oh yeah baby ! very impressed to say the least, Greg.
That's one sweet calibre - super efficient for 69 - 70gn powder.
for some reason iphone? ipad? the pix would not view last night, but this morning on laptop they're there, wtf .... IT challenged ?!
11-06-2018, 11:01 AM
GWH

Holy shit that 195gr load must be hot alright, my new 28 Nosler barrel needs 88gr of RE33 to do 3080 fps with a 195gr from 26" I'm thinking one of our chronys is broken.
11-06-2018, 11:39 AM
Kiwi Greg

Quote:

Originally Posted by GWH

Holy shit that 195gr load must be hot alright, my new 28 Nosler barrel needs 88gr of RE33 to do 3080 fps with a 195gr from 26" I'm thinking one of our chronys is broken.

It will run just over 3100 with 9 grains less, it is a little warm, no stamp just a bit of primary extraction.

Your velocities are reasonably consistent with another 26" 28 I know of

I will ask my Labradar if it was having a bad day on Saturday :)

Its a very impressive well designed cartridge.
11-06-2018, 06:00 PM
Friwi

Have you got a 6.5-7 mm version of it?
11-06-2018, 06:14 PM
Tahr

https://www.longrangehunting.com/thr...rience.190052/
11-06-2018, 06:18 PM
Kiwi Greg

Quote:

Originally Posted by Friwi

Have you got a 6.5-7 mm version of it?

In fact I do have a reamer :)

I have built a test rifle, as I do so my customers don't have to pay for initial load development & I can quote real world numbers not made up ones :ORLY:

It goes very well :)
11-06-2018, 06:35 PM
Ryan_Songhurst

Quote:

Originally Posted by Kiwi Greg

In fact I do have a reamer :)

I have built a test rifle, as I do so my customers don't have to pay for initial load development & I can quote real world numbers not made up ones :ORLY:

It goes very well :)

Hmmmm... So in theory you could use the 6.5 reamer to ream the chamber in a barrel with a "slightly larger" bore and just throat it with a "slightly larger" reamer...?
11-06-2018, 06:37 PM
199p

Quote:

Originally Posted by Ryan_Songhurst

Hmmmm... So in theory you could use the 6.5 reamer to ream the chamber in a barrel with a "slightly larger" bore and just throat it with a "slightly larger" reamer...?

#27ispoos :P
11-06-2018, 06:38 PM
Kiwi Greg

Quote:

Originally Posted by Tahr

https://www.longrangehunting.com/thr...rience.190052/

Thanks Tahr, hadn't seen that thread :cool:

This ones pretty good too https://www.longrangehunting.com/thr.../#post-1417368

Getting pretty similar to my experiences, but they don't seem to have tried 2225 or RL 33, I could try N570 but can't be bothered with the cost & its little idiosyncrasies :)
11-06-2018, 06:39 PM
Kiwi Greg

Quote:

Originally Posted by Ryan_Songhurst

Hmmmm... So in theory you could use the 6.5 reamer to ream the chamber in a barrel with a "slightly larger" bore and just throat it with a "slightly larger" reamer...?

Yep just like the other one :D