cummin_un_glued
Well-Known Member
I built a 7x300 last year and its an amazing rifle but its a little too much to pack up in the mountains being that its 51" long and weighs close to 17 lbs.
I wanted to use the black/grey/white McMillian stock from the 7x300 and replace it with a tan/grey/black McMillian, which means I have to use another weatherby vanguard rifle to start with. So I ordered another one to those which I got today. I already have one in .257 weatherby and am very happy with it.
I like the wind bucking capability of the .674bc 180gr bergers that I been shooting and I wanted something in the 160ish grain class of bullets in order to be able to take elk at 800y if needed. In order to get the energy I want I need a muzzle velocity of around 3100fps. A 7mm 168gr berger hunting hybrid has a .604bc which is good but realistically getting that bullet up to the 3200 range it would take i'd be back to my 7x300. So then I looked at the 165gr .277 Matrix bullet. It has a .650bc. Now a standard 270 Win is only going to push that bullet around 2900fps. This makes a 270 Weatherby mag come to mind but the factory accumark twist rate is only 1-10 which isn't enough.
Dan Lilja builds .277 barrels in 1-8 twist so I contacted him and ordered up one of his #5 fluted match grade barrels. It will be here in 10-12 weeks. Being that i'm not going with the factory accumark means that I don have to use the weatherby brass. I will be using 7mm rem mag brass and simply necking it down using redding S type bushing dies just like I do for my 7x300
I already spoke with the gun smith that built my 7x300 and he just happens to already have this reamer and a .277 throating reamer so that he can throat it long enough for me to seat the rounds at 3.500" mag length of the vanguard internal box. All I have to do is make up a dummy round and send with the barrel and barreled action and he will ream it to match. I ordered 400 of the matrix bullets but they have not arrived yet so just for fun I necked down a piece of once fired brass and seated a 150gr NBT .277 bullet into it at the 3.530" length just for a visual reference.
Yall know how long a custom build takes so progress will be slow. How ever I do plan to hunt with the 7mm rem mag that I just ordered this fall in WY since this rifle wont be done yet. I will update this thread as parts arrive and progress is made.
Let me know what yall think.
Dustin
I wanted to use the black/grey/white McMillian stock from the 7x300 and replace it with a tan/grey/black McMillian, which means I have to use another weatherby vanguard rifle to start with. So I ordered another one to those which I got today. I already have one in .257 weatherby and am very happy with it.
I like the wind bucking capability of the .674bc 180gr bergers that I been shooting and I wanted something in the 160ish grain class of bullets in order to be able to take elk at 800y if needed. In order to get the energy I want I need a muzzle velocity of around 3100fps. A 7mm 168gr berger hunting hybrid has a .604bc which is good but realistically getting that bullet up to the 3200 range it would take i'd be back to my 7x300. So then I looked at the 165gr .277 Matrix bullet. It has a .650bc. Now a standard 270 Win is only going to push that bullet around 2900fps. This makes a 270 Weatherby mag come to mind but the factory accumark twist rate is only 1-10 which isn't enough.
Dan Lilja builds .277 barrels in 1-8 twist so I contacted him and ordered up one of his #5 fluted match grade barrels. It will be here in 10-12 weeks. Being that i'm not going with the factory accumark means that I don have to use the weatherby brass. I will be using 7mm rem mag brass and simply necking it down using redding S type bushing dies just like I do for my 7x300
I already spoke with the gun smith that built my 7x300 and he just happens to already have this reamer and a .277 throating reamer so that he can throat it long enough for me to seat the rounds at 3.500" mag length of the vanguard internal box. All I have to do is make up a dummy round and send with the barrel and barreled action and he will ream it to match. I ordered 400 of the matrix bullets but they have not arrived yet so just for fun I necked down a piece of once fired brass and seated a 150gr NBT .277 bullet into it at the 3.530" length just for a visual reference.
Yall know how long a custom build takes so progress will be slow. How ever I do plan to hunt with the 7mm rem mag that I just ordered this fall in WY since this rifle wont be done yet. I will update this thread as parts arrive and progress is made.
Let me know what yall think.
Dustin
