300WM for varmints, questions

[GrocMax]

A buddy wants to try and vaporize varmints, 110 vmax.

Am I reading the SAAMI print right, 300WM SAAMI chamber is zero freebore, a 'funnel' .007" larger than bullet OD and 1.5 deg?

Can you reach the lands with these short 110-125 class bullets?

What's a realistic velocity to expect? 3700?

 

[crowsnest2002]

I think a major concern will be the bullet coming apart as it exits the barrel. I remember the Speer 125 tnts had a max speed before they would fly apart in the air. You might want to consider looking up 300 wsm varmint rifle. Awhile back a guy had a setup in this and he had to use 125 nobler ballistic tips if I recall correctly.

 

[CatShooter]

I think a major concern will be the bullet coming apart as it exits the barrel. I remember the Speer 125 tnts had a max speed before they would fly apart in the air. You might want to consider looking up 300 wsm varmint rifle. Awhile back a guy had a setup in this and he had to use 125 nobler ballistic tips if I recall correctly.

The "guy" was Richard Franklin, and he used both the 110 V-max and the 125 BT without problems.

 

[fredo]

Yep.
I have Richard Franklin's 'chuckin' video from several years back. One of his big rigs was a 300WSM with a 30" 1:15tw barrel for launching those 110Vmaxs & 125 N-Btips. IIRC, he was gettin' upwards of 4200fps with the 110s. Made for pretty spectacular chuck gymnastics on the video!!!

Think its safe to say that the super slow twist tube was the key to keeping those light for cal. bullets from nuking mid-flight. I doubt they'd play as nice from a more standard twisted barrel...

Good luck & have fun!

 

[pdhntr]

A buddy wants to try and vaporize varmints, 110 vmax.

Am I reading the SAAMI print right, 300WM SAAMI chamber is zero freebore, a 'funnel' .007" larger than bullet OD and 1.5 deg?

Can you reach the lands with these short 110-125 class bullets?

What's a realistic velocity to expect? 3700?

I built this years before the development of the WSM and Richard’s 300 Varminter.

It is a 300 Win Mag using a Winchester M17 action with a Krieger 1-13 twist barrel, and its only use is for prairie dogs.

Early load development with it showed 4000 with the 110 V-max was no problem. I could have gone more, but after scraping the money together for the barrel, I didn’t want to toast it right away. I found a nice load at just above 3800 that didn’t stress the brass at all, and shot that for probably 500 rounds or so. It wasn’t long after that, I started to get blow ups with the V-max. No doubt, the throat was getting rough.

After one of them caught the front of the muzzle break, I quit using them and went to the 125 Nosler BT. It shoots those very well, but I can’t recall what the velocity is with them.

With the 1-13 I can stabilize the Sierra 155 gr. Palma bullet. I use those to shoot at the longer distances, or when there is high wind. They don’t usually open up the pds, but there aren’t many crawl offs either.

All I had at the time was a standard 300 WM reamer. Don’t know free bore or anything else about it. The 110 was just barely in the case when the barrel was fresh. I had to seat them away from the lands to keep some of the bullet in the case. The 125 BT isn’t much better.

I don’t shoot it much anymore, but it sure is fun when I do. It does actually vaporize a prairie dog.

I know Richard uses the 15 twist barrel, and I believe he uses premium brass also, to get to the 4000 fps mark with the WSM.

I kinda’ like the ability to shoot the 155 when I have to. And as the barrel continues to wear, that is certainly an advantage to me.

I guess the only thing I would change now, would be maybe getting a custom reamer that would reduce the free bore.

Jim

 

[GrocMax]

Do the 155 amax's work well on varmints?

 

[mshelton]

If you go with the wsm and the 110 or 125 bullets, n550 will be your velocity friend.

 

[TRG300WM]

I have a TRG-42 300-MW, it has a 27" 11 twist barrel, i ran some 110 v-max through it with 79.4 grs of H4350, and chronograph the load with a CED m2, and got 3650. Then 82.5 H4350, 3792.

 

[Rjencks]

That is one nice looking rifle!

A buddy wants to try and vaporize varmints, 110 vmax.

Am I reading the SAAMI print right, 300WM SAAMI chamber is zero freebore, a 'funnel' .007" larger than bullet OD and 1.5 deg?

Can you reach the lands with these short 110-125 class bullets?

What's a realistic velocity to expect? 3700?

I built this years before the development of the WSM and Richard’s 300 Varminter.

It is a 300 Win Mag using a Winchester M17 action with a Krieger 1-13 twist barrel, and its only use is for prairie dogs.

Early load development with it showed 4000 with the 110 V-max was no problem. I could have gone more, but after scraping the money together for the barrel, I didn’t want to toast it right away. I found a nice load at just above 3800 that didn’t stress the brass at all, and shot that for probably 500 rounds or so. It wasn’t long after that, I started to get blow ups with the V-max. No doubt, the throat was getting rough.

After one of them caught the front of the muzzle break, I quit using them and went to the 125 Nosler BT. It shoots those very well, but I can’t recall what the velocity is with them.

With the 1-13 I can stabilize the Sierra 155 gr. Palma bullet. I use those to shoot at the longer distances, or when there is high wind. They don’t usually open up the pds, but there aren’t many crawl offs either.

All I had at the time was a standard 300 WM reamer. Don’t know free bore or anything else about it. The 110 was just barely in the case when the barrel was fresh. I had to seat them away from the lands to keep some of the bullet in the case. The 125 BT isn’t much better.

I don’t shoot it much anymore, but it sure is fun when I do. It does actually vaporize a prairie dog.

I know Richard uses the 15 twist barrel, and I believe he uses premium brass also, to get to the 4000 fps mark with the WSM.

I kinda’ like the ability to shoot the 155 when I have to. And as the barrel continues to wear, that is certainly an advantage to me.

I guess the only thing I would change now, would be maybe getting a custom reamer that would reduce the free bore.

Jim

 

[scope eye]

I have a 30" 12 twist 300 WinMag that I shoot 110gr Vmax's, Sierra's, Barnes, and Speer's loaded with 85gr + of RL17 that is good for 4300+ fps, I shot that for a long time and thought it could not get any better than that, until I had my 30" 17 twist 300 RUM built this one is defiantly the king of the hill, the FPS is so high that I don't dare posting it anymore, it gets old being called a liar and arguing, I get stuff like I can only get 3900 fps out of my 26" 10 twist Sendero so there is no way you are getting those speeds "I am a moderator and my word is god" LOL "Not this forum"

Dean

PS: at 4300 Fps in a 12 twist they are only spinning 260,000 rpm which is well under what they are rated for, it is the same RPM as shooting them 3600 FPS out of a 10 twist.

 

[scope eye]

I have 14,15,16, and 17 twist barrels, and as a rule of thumb when shooting ultra high velocity rounds, every increase in twist "slower" is worth 100 + - increase in fps. that and it stops them from vaporizing "the bullets that is not the varmints" LOL
Dean

 

[scope eye]

Hogdon has some load data on there web site, I don't know what chamber they were using but I was able to go almost 10% over there max loads, before the primers began to show signs and never even got a sticky bolt or anything else associated with aggressive loads. Note that they used a 24" 10 twist barrel for there test loads, with new brass I have run loads of 80gr of Varget and 88gr of RL17, speaking of RL17 I find it is the best powder for this application and has a jump on H4350. They have the same burn rate but yet can run more of it before seeing signs of pressure, and it has always given me more fps when using the same amount, so between those two combined there is at least a 200 fps advantage over H4350 with RL17, so what it boils down to is if you had a 26" 12 twist barrel which by no means is a custom barrel, you could easily attain 4000 fps with 110gr bullets and still be able to shoot 168s with out putting any strain on the components.

Dean

PS: A 110gr going 4000 fps drops around 4 MOA + - at 500 Yards, my 300 RUM is less than 3 MOA.

PPS: Barnes 110gr TTSXs are my favorite and attain the highest FPS, I just wish they wern't a buck a piece.

 

[antitactical]

Hey kanuck, how about those speeds. I'm not going to call you a liar. We've been thinking about a 30-338 lapua improved and a 17-19 twist. In a big ol BAT action that can handle the heat and some RWS brass (a step up from lapua) it may get interesting

 

[GrocMax]

Got the barrel 3 weeks ago, 12tw straight 1 1/16" 30 inch Savage. Hopefully have a chance to get it together and loaded for a PD trip end of aug/early sept.

PD's are fat 'n happy in the TX panhandle this year, lotsa rain.

 

[scope eye]

Hey kanuck, how about those speeds. I'm not going to call you a liar. We've been thinking about a 30-338 lapua improved and a 17-19 twist. In a big ol BAT action that can handle the heat and some RWS brass (a step up from lapua) it may get interesting

I say go for it, it's like nothing you have ever shot before, I tell you one thing in the beginning you will be over shooting every thing it takes a while for your brain to adjust to the bullet drop or the lack of, lol I actually have two a 12 twist X-Caliber and a 17twist Bartlien they are both 30" all I will say for now are the speeds are well over 4500 FPS, I tell you the name calling was pretty Ignorant so I am still a little gun shy pardon the pun, some of you might know me I go by Scope eye on other forums, I tell you what if some one has quick load put in 110gr of RL17 and a 110gr Barnes TTSX, and let us know what you come up with it won't be a typo.LOL "click on the pics for larger view"

Dean

http://
http://[URL=http://s1290.photobucket.com/user/jazzygirl44/media/rum334_zps7c039a1e.jpg.html][/img]
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[scope eye]

Got the barrel 3 weeks ago, 12tw straight 1 1/16" 30 inch Savage. Hopefully have a chance to get it together and loaded for a PD trip end of aug/early sept.

PD's are fat 'n happy in the TX panhandle this year, lotsa rain.

Hey Groc feel free to contact me if you want to know more about my approach to this type of shooting, actually that goes for anyone who might be interested, and don't worry about bothering me I can go on about this subject all day.LOL

Dean

PS: 155gr work great on little furballs as well as the big ones.

 

[scope eye]

One good reference I have one this forum is Dennis Haffner, we both shoot 160gr Barnes TTSX out of our 338 EDGE's at over 4000 fps he has a 26" barrel and loads 102gr of RL17, I get 4200 fps I load 107gr and have a 33" barrel respectively. I wish someone would make a12 or 14 twist 338 blank,
this is it as you can see it is a Remage setup. "click on the pics for larger view"

Dean

http://
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[GrocMax]

Now there's some serious splat factor!

 

[scope eye]

I have shot it at 1000 Yards a couple of times and there was only a 14 MOA drop, I had a couple of other shooters try it and they were just shaking there heads trying to get a grasp on the whole thing, the look on there faces was priceless.LOL I already gave you the load the COAL is 3.6"

Dean

PS: This by no means a 1000 yard setup, I just wanted to see if it could be done. that and I was zeroed in at 200 yards instead of 100 not that it makes much of a difference, I just like to disclose every factor.

 

[scope eye]

Hey Groc RL17 and Hybrid HV100 are my go to powders, for they 110gr through 130gr bullets.

Dean