Gunsmithing 7wsm Reamer and throating for the new 195VLD

[LEOHUNTER]

So I'm trying to learn here so sorry if this is a simple answer...

I'm on to a new 7wsm build and im trying to guess-to-mate where the new 195VLD hunting Hybrids are going to seat into the lands, so I can make sure I use the right DBM with the guess-to-mate COAL. so it looks like the longest mag is the AW mags at 2.985, which means my OAL should be no more than 2.965 (give a little room since its a hunting rifle)..so how do I work backwards from the OAL of the bullets(planned to be around 1.637).
I Planned on using winchester brass as they are the only factory brass I can find.

I'm using a PTG 7WSM TAC reamer, I'm gonna try and attached the spec

http://s1281.beta.photobucket.com/user/dvickery25/media/7wsmPTGReamerTAC_zps7763b7bc.jpg.html

Anything else you need?

Thanks for your help in advance!

 

[Gray]

Re: 7wsm Reamer and throating for the new 195VLD

I really don't think you are going to have any case capacity running a 195 Berger (when they come out)in a short action gun, even if you are using AW Mags or Aplha or whatever. The 195's will be really long, and a 180 Berger is almost max for a s/a 7wsm. Might want to consider a Long Action with 300 WM Mags or C.I.P.

 

[E. Bryant]

Re: 7wsm Reamer and throating for the new 195VLD

The other concern, as I understand things (being a 7mm WSM noob), is that the relatively short neck of the case may not allow the 195gr Berger to be seated deep enough.

Perhaps the 7mm/300WSM would be a better choice for loading long VLD bullets to mag length in a S/A setup?

 

[LEOHUNTER]

Re: 7wsm Reamer and throating for the new 195VLD

I was looking into the 300/7wsm for the longer neck......

Special D: not sure I follow you when you say "I really don't think you are going to have any case capacity running a 195 Berger (when they come out)in a short action gun"

do you mean because of the shorter neck or.......

 

[Jeffvn]

Re: 7wsm Reamer and throating for the new 195VLD

I think he is saying loading to AI short mag length with a 195 gr projectile is a bad combination.

The bullet will eat a ton of your case capacity and you'll not be able to push it fast enough to really justify the heavy bullet. If you have ever shot 180 Bergers from a short magazine you know what I mean; this will be worse, since the bullet will be both longer and heavier.

I agree with this view.

If you go to a long action (or single feed a short action) and push the COAL out to more like 3.200"+, then it changes the world. A good test for the Berger 195s would be the Matrix 190s or possibly the Cauterucio 189s. Go load up a bunch and see how it works. The Berger will be a different design and different length, but the mass issue will come more into focus when you try the Matrix 190s or the Cauterucio 189s.

Even with all that said, these bullets have not yet been put into production. No one has admitted to seeing an active prototype. Berger has not publicly asked for volunteers to shoot them and give feedback, like they did for all the various hybrids. If Berger releases one before the end of 2013, you'll be lucky.

Jeffvn

 

[KYpatriot]

Re: 7wsm Reamer and throating for the new 195VLD

Come on Berger! The hide masses demand this bullet!!

 

[Gray]

Re: 7wsm Reamer and throating for the new 195VLD

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LEOHUNTER</div><div class="ubbcode-body">I was looking into the 300/7wsm for the longer neck......

Special D: not sure I follow you when you say "I really don't think you are going to have any case capacity running a 195 Berger (when they come out)in a short action gun"

do you mean because of the shorter neck or.......

</div></div>

The bullet is more than half the length of the 300wsm case, to justify using this round I would go 7mag at minimum. A 7mm-300 Win Mag or 7STW or 7RUM would push this round like it's supposed to be. The 7/300wsm might work but it's gonna have to be fed from a long action, and is still going to push the round in the 2800ish fps range at most.

 

[OKbow87]

Re: 7wsm Reamer and throating for the new 195VLD

I just talked to litz about this bullet the other day. He said there was lots of uncertainty with this bullet and not to expect it within the next year.

Secondly, it is hard enough to run a 180 out of a short action 7wsm, but can be done. I have done it from my old gun with accurate wsm mags, and my new gun running the seekins wsm bottom metal. I much prefer the seekins for this application, but good luck finding any of it since they have decided not to keep it in stock any more. The 195's out of an ai style mag is a waste of time, and I am a firm believer in running the wsm's in a short action.

If I were really counting on this bullet coming out and wanting to run it well... I would think about something long action with a touch more case capacity. Like a 7mm lrm.

 

[ProudKiwi]

Re: 7wsm Reamer and throating for the new 195VLD

An imporoved .300 Norma Mag necked down to 7mm on a med/long action with the 195 Bergers is my idea of a wet dream.

A WSM or SAUM just aint gonna cut it. I personally think they are pretty much maxed with the 162 A-max. Dont get me wrong, there are plenty of people doing great with 180's out of them but it's to much like hard work to get them running mint.

 

[LEOHUNTER]

Re: 7wsm Reamer and throating for the new 195VLD

An imporoved .300 Norma Mag necked down to 7mm on a med/long action with the 195 Bergers is my idea of a wet dream.

Hmmm....ProudKiwi I'm Listening.......

 

[KYS]

Re: 7wsm Reamer and throating for the new 195VLD

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ProudKiwi</div><div class="ubbcode-body">An imporoved .300 Norma Mag necked down to 7mm on a med/long action with the 195 Bergers is my idea of a wet dream.

A WSM or SAUM just aint gonna cut it. I personally think they are pretty much maxed with the 162 A-max. Dont get me wrong, there are plenty of people doing great with 180's out of them but <span style="color: #CC6600">it's to much like hard work to get them running mint.</span> </div></div>

I don't find that to be accurate at all....
7WSM is easy to get shooting accurately with the 180 Berger Hybrid. Speed is relatively easy to get as well.

 

[LRI]

Re: 7wsm Reamer and throating for the new 195VLD

Whether you end up with a long/short action I would encourage you to consider this:

If the bullets aren't available and your heart is set on running them, wait till you have a box of the little buggers in your hand. Load up samples and try them in the magazine.

THEN start looking at chamber reamers. You can have someone whip you up a custom reamer tailored specifically to your cause, or just get a SAAMI reamer and have it throated to fit the bill.

Point is all the wondering/speculating is a great way to end up disappointed because often times stuff just doesn't come out the way we'd hoped/anticipated when guessing.

Good luck.

C.