Need some help. I've got a 300 winmag I had built by a local smith and good friend that I'm having issues with. It doesn't seem to care for any factory ammo I've tried and I've tried a lot. So far it's favorite ammo was factory 150gr core-lokt that had an es of something like 150fps. Shot that about ¾" go figure.
Feed it any quality ammo and it's about a 1½ moa gun.
A little background on the rifle.
It started out as a model 700 bdl in 300 winmag. I purchased it from my friend who then pulled it apart, trued the action and rebarreled it with an older shilen 8 land, #7 contour barrel with a 1:10 twist that he'd had for some time but never used. As stated above it just never shot factory ammo well.
Chamber was cut with a saami spec reamer to the best of my knowledge.
After about 150 rounds of load development I found a load with a 180 nosler ballistic tip it liked but it only liked it at around 3300 fps. That was on the ragged edge of what the action could stand. Cases were good for about one firing. Next closest node was around 2800 fps. Which I cared nothing for.
I primarily wanted to shoot heavier bullets and I had my heart set at the time on shooting the 208 amax. I had a good load with an SD less than 5 that ran right at 2900 with 71.0gr of imr 4831 and a 215m but you could only shoot it if it was less than 75 degrees outside.
So by this time I'm thinking I want to try another barrel but my friend has retired from the rifle building business. His brother however built rifles as well and has built some good ones. He was well known and highly regarded over on LRH. He'd built a few rifles for members over there and no one had anything bad to say about them.
So I contacted the guy and we ordered a 1:9 lilja mk13 mod7 contour and he chambered it with the same reamer that had been used on the first barrel. Got the same results also. Hates factory ammo and is extremely pressure sensitive when loading heavier bullets.
My last attempt was 78.0gr of magpro under a 215 berger hybrid. Book says that's 4.0gr under max and speed was just over 2800 iirc. Pretty much locked it up when I pulled the trigger. Extremely difficult bolt lift and I had to tap the bolt back to extract the fired case.
Was it a fluke ? I don't know let's try another one. Nope, wasn't a fluke. Think I've got a pic of the cases. I'll attach them if I do.
I've used H1000, imr and h4831, h4831sc and imr 7828. And reloader 22 I think. Can't remember for sure on that one. It's been off and on for about eight years with this gun.
So who can can I talk to about setting it back and rechambering for running the longer bullets?
I've never had any custom work done outside of the two gentlemen mentioned here.
Feed it any quality ammo and it's about a 1½ moa gun.
A little background on the rifle.
It started out as a model 700 bdl in 300 winmag. I purchased it from my friend who then pulled it apart, trued the action and rebarreled it with an older shilen 8 land, #7 contour barrel with a 1:10 twist that he'd had for some time but never used. As stated above it just never shot factory ammo well.
Chamber was cut with a saami spec reamer to the best of my knowledge.
After about 150 rounds of load development I found a load with a 180 nosler ballistic tip it liked but it only liked it at around 3300 fps. That was on the ragged edge of what the action could stand. Cases were good for about one firing. Next closest node was around 2800 fps. Which I cared nothing for.
I primarily wanted to shoot heavier bullets and I had my heart set at the time on shooting the 208 amax. I had a good load with an SD less than 5 that ran right at 2900 with 71.0gr of imr 4831 and a 215m but you could only shoot it if it was less than 75 degrees outside.
So by this time I'm thinking I want to try another barrel but my friend has retired from the rifle building business. His brother however built rifles as well and has built some good ones. He was well known and highly regarded over on LRH. He'd built a few rifles for members over there and no one had anything bad to say about them.
So I contacted the guy and we ordered a 1:9 lilja mk13 mod7 contour and he chambered it with the same reamer that had been used on the first barrel. Got the same results also. Hates factory ammo and is extremely pressure sensitive when loading heavier bullets.
My last attempt was 78.0gr of magpro under a 215 berger hybrid. Book says that's 4.0gr under max and speed was just over 2800 iirc. Pretty much locked it up when I pulled the trigger. Extremely difficult bolt lift and I had to tap the bolt back to extract the fired case.
Was it a fluke ? I don't know let's try another one. Nope, wasn't a fluke. Think I've got a pic of the cases. I'll attach them if I do.
I've used H1000, imr and h4831, h4831sc and imr 7828. And reloader 22 I think. Can't remember for sure on that one. It's been off and on for about eight years with this gun.
So who can can I talk to about setting it back and rechambering for running the longer bullets?
I've never had any custom work done outside of the two gentlemen mentioned here.
