Anyone own a 7mm 300 Win Mag?

[mrb1982]

Is there any chance anybody would be willing to share their plans for the reamer for this caliber? I am wanting just a straight up 300 win mag with the same shoulder angle, just purely necked down to the 7mm. I am a little bit beginner and this wildcat stuff so I am trying to learn a little. I don't really want to have my reamer built for a specific bullet, as I would like to shoot the 180 berger, but then possibly shoot the 195 when it comes out. We'll see if I even have it built by then. hahaha Just curious if anybody would email me their spec sheet so I can try to learn a little. If so, PM me and I will give you my email address. Thanks

 

[Petersen]

Is there any chance anybody would be willing to share their plans for the reamer for this caliber? I am wanting just a straight up 300 win mag with the same shoulder angle, just purely necked down to the 7mm. I am a little bit beginner and this wildcat stuff so I am trying to learn a little. I don't really want to have my reamer built for a specific bullet, as I would like to shoot the 180 berger, but then possibly shoot the 195 when it comes out. We'll see if I even have it built by then. hahaha Just curious if anybody would email me their spec sheet so I can try to learn a little. If so, PM me and I will give you my email address. Thanks

Call PTG when you order and tell them that is what you want and they will fix you up - I imagine the freebore will be around .220. My reamer freebore is .180 and it shoots the 180 bergers well but they are seated a bit deeper in my case than I like.

Also, if you plan on the 195s later on I think the twist needs to be 1:8.

I do have an excel doc of the reamer print if you feel this will help.

 

[cockcroft]

Fire formed 20 pcs of brass yesterday. Shot one round then cleaned for most of them then shot some 3 shot groups cleaning between groups. groups were about 3/8. Fire form load was a little hot, velocities ran from 3267 to 3341 with a 150 SMK. Used 69 gr of RJ 19 and RWS brass. Will drop down to 65 gr or lower for the next fire forming secession.
Going to load some 168 and 180 VLD's with H1000 in the formed cases and work up a load.
For my purposes I think I will hunt with the 168's, deer and hogs mainly.
Want to run the 180's to max and check velocity just for grins.
My PTG reamer print #39452 has .188 free bore and a .316 neck, 30 degree shoulder and described as 7mm Practical.
Recoil with the Harrels brake was mild to say the least. Rifle weighs 13-4 so its not a mountain rifle. Built for Texas stand hunting.
Barrel is 27.5 in to crown plus brake.
Will check back after loads are worked up with velocity info.

 

[Dick Tinsley]

Fire formed 20 pcs of brass yesterday. Shot one round then cleaned for most of them then shot some 3 shot groups cleaning between groups. groups were about 3/8. Fire form load was a little hot, velocities ran from 3267 to 3341 with a 150 SMK. Used 69 gr of RJ 19 and RWS brass. Will drop down to 65 gr or lower for the next fire forming secession.
Going to load some 168 and 180 VLD's with H1000 in the formed cases and work up a load.
For my purposes I think I will hunt with the 168's, deer and hogs mainly.
Want to run the 180's to max and check velocity just for grins.
My PTG reamer print #39452 has .188 free bore and a .316 neck, 30 degree shoulder and described as 7mm Practical.
Recoil with the Harrels brake was mild to say the least. Rifle weighs 13-4 so its not a mountain rifle. Built for Texas stand hunting.
Barrel is 27.5 in to crown plus brake.
Will check back after loads are worked up with velocity info.

Very impressive!!!! Glad to see that you are having good results! I've got a question though, I've heard ( to some existent ) both side of the SMK story about hunting with them. That being said, I'm setting my 7/300 up to shoot 180's! Is the 180SMK good for hunting? I'm really kinda parcel to Sierra, so I'm just asking! Thanks!!

DT

 

[cockcroft]

I should have been more clear. I fire formed with SMK because they were laying around not being used for anything. My reamer has .188 free bore for Berger VLD's that I plan on hunting with. Also plan on trying AccuBond 160 gr in this rifle. My son has killed all kinds of deer and hogs with the accubond in his 7 ultra mag.
Really don't want to comment further and change this thread from the 7x300 to a bullet argument thread.
Mike

 

[Dick Tinsley]

Hey! I understand Mike! Thanks for the replie anyway! Guess I wasn't thinking straight! Anyway good shooting to ya! (I'll send ya a pm!)

 

[calib]

Nice groups. Lets hear about the 180's

 

[Dick Tinsley]

Nice groups. Lets hear about the 180's

With respects to all!!!! Got to agree with Cockcroft!! Lets just keep it bout the 7/300. Sorry to all for the question!!!


DT

 

[calib]

With respects to all!!!! Got to agree with Cockcroft!! Lets just keep it bout the 7/300. Sorry to all for the question!!!


DT

since the 7 practical is pretty much the 7-300 win asking him to report the performance of his 180's out of his gun and comparing to my 7-300 win would not be off topic.

if there is info that he has on loading the same bullet i am using in these cartridges i think others on here will agree it is ok? if not then i can pm him

 

[Dick Tinsley]

since the 7 practical is pretty much the 7-300 win asking him to report the performance of his 180's out of his gun and comparing to my 7-300 win would not be off topic.

if there is info that he has on loading the same bullet i am using in these cartridges i think others on here will agree it is ok? if not then i can pm him

I've got to agree with that also!! Got to apologize to all out there for today!! This ADHD stuff is kickin my tail today!! Calib! You are spot on with your post!! Think I'm just gonna sit back the rest of today an keep my big mouth shut an learn!! With respect to all!!!

DT

 

[cockcroft]

Calm down everyone. I just didn't want to get into the arguments about which bullet kills better on this particular thread. That subject has been worn out elsewhere. Which bullet shoots better in your or my rifle is good info for all to share. Tinsley was referring to a PM he and I had going.
Mike

 

[fmajor]

This is all great dialogue! I've about 350 new Winchester cases (all same lot #) for 300 Win mag and would like to one day do a 7/300 build as well.

Wildcatting is all new to me so having a reamer made up with all the related specs is kinda mind boggling. So, is a 300 Win Mag case with a 30 degree shoulder necked down called a "7/300 Practical"?

My original performance hope for this general chambering is to use 160gr hunting bullets and be over 3,100fps with a moderate length tube of maybe 27" including a brake (more of a mountain hunting rifle than a strict stand-hunter).

Application is for 500-600 yds max on elk and about any distance I'm comfortable with for antelope or mulies. I'm sure the chambering is capable of longer ranges with elk (my primary quarry) than I would take. For hunting elk from 600 yds and further to my personal comfort max. distance, I'm more inclined toward a fast 338 (300gr pills @ ~ 3,200 fps).

 

[300stw]

id take a 100 of the 300 win cases,,,

anyway I am shooting the 168 lrab nosler lately with rel 25, 73 grains, my pro chrono set at 20 ft is reading 3178 with this load, shot to 400 yards with it its maintain .5 moa for 5 shot groups pretty easily,, I don't know what to use for a bc to run a program to figure drops , I had a 300 yd zero and about 7.5-8in drop at 400,,,

27in brux barrel,,, .220 freebore standard 7-300

 

[LONGSHOOTER]

Why not just load up those .300 WM cases with 30 cal, and go hunting?

I don't mean to offend anybody, but you must admit, there is so much baloney being spoken here.

You know, like if 7mm isn't good enough, we must jump right to 338 cal.

Everyone knows that the .300 Win Mag is the go everywhere, do everything cartridge for North America.