5R rifling any thing Better?????

[Reelamin]

We just recently integrated barrel manufacturing at Gunwerks

I'm a little stumped on why they are so popular. I suspect it's the usual marketing loop, where someone reads something somewhere then demands

We will likely never make one...

Not intending to be bashing. Can you say internet and ignorance? Then say 6.5 Creedmoor as the best example of what you are stumped about. Gunwerks is doing and has done the exact same thing to market their products. It is the most effective growth business model currently. Come on man.....look at what is going on all around us.....marketing taking advantage of ignorance and information. .Let's Go Brandon

 

[AaronSkipDavidson]

So, in your opinion, what is the ideal groove count/configuration?

In cut rifling and in chambering, an opposing land is desirable. We've done most of our data analysis with 5 vs 4 groove. We use 4 groove. When you get to 338 and up 6 and 8 may be better options.

There's some next-level secret squirrel stuff in play here. Maybe we'll make a video about it one of these days.

This doesn't mean good results can't be had with other configs, but there's a reason why many custom guns need to have a load workup to find it. We live in a different world. If our gun doesn't shoot our off-the-shelf ammo, we get to start over....

 

[FEENIX]

In cut rifling and in chambering, an opposing land is desirable. We've done most of our data analysis with 5 vs 4 groove. We use 4 groove. When you get to 338 and up 6 and 8 may be better options.

There's some next-level secret squirrel stuff in play here. Maybe we'll make a video about it one of these days.

This doesn't mean good results can't be had with other configs, but there's a reason why many custom guns need to have a load workup to find it. We live in a different world. If our gun doesn't shoot our off-the-shelf ammo, we get to start over....

What's your take on 3G?

 

[GuntherRLII]

At least two. Then the determining factor is mostly the amount of JuJu.

 

[Tac-O]

There was a really good post made be JE awhile back about his experiences with different groove configurations vs caliber and chambering. Not sure what thread it was in, but it's worthy of searching for

 

[GunHawk]

I think PRS and NRL are dominated by 5R (for now). Hawk Hill did win with a 4 groove a couple years ago, if I remember correctly.

 

[Reelamin]

I was intrigued by the possible use by competition shooters. Duck Duck Go'd it and really not seeing much info at all mentioning what count of rifling they use. Only saw in a quick glance the #2 barrel Hawk is a four groove over in 2015-2019. Minimal search and time and I would expect if it was a hugely important thing it would be covered in detail as they covered pretty much everything else.

Best Rifle Barrel – What The Pros Use

Barrels are deceptively simple, yet crucial to the precision required for long-range shooting. I onc...

precisionrifleblog.com

 

[Muddyboots]

So the real question is why so many rifles are very accurate with 5R? I am not saying 5R is better but only their performance seems to be quite good. I've got 2 new builds with 5R only because the barrel mfg'er uses 5R. Both rifles shoot sub 0.5MOA. If whatever you shoot works, how can anyone bash the system?

Did I mention I think Ram trucks are best?

 

[Greyfox]

I have seen excellent accuracy from both my 5R and 4 groove barrels over the years. I will say that the rare, exceptional standouts that come to mind have been Kreiger 4's,

 

[gohring3006]

I have a factory 5r that shoots with any custom. 1/2" or less with several powders, charge weights and bullets, it's the only rifle I have that will do that. Most of my 4 grooves like one or two combos and that's it.

 

[Hugnot]

I have been told that 5R is the way to go and I have shot out 3 barrels tying to verify this over the past 7 years. I remember when Lilja was promoting 3, l-g barrels but I never did try them. Upon peering into one of my 5R barrels for the first time I thought the nice square edges of the lands were worn off. One of my friends had a 2, l-g WWII Springfield that shot as well as many rifles having 2X's the lands & grooves.

 

[quigley257]

Another aspect of the rifling question is land to groove ratios. There are some industry caliber standards for land to groove ratios that just haven't changed over the years that don't make sense with modern bullets and twist rates. I have seen huge velocity differences between two 6mm barrels that were exactly the same bore diameter, but cut with different land to groove ratios. They both shot well but had very different velocities with the same load.

 

[Reelamin]

Another aspect of the rifling question is land to groove ratios. There are some industry caliber standards for land to groove ratios that just haven't changed over the years that don't make sense with modern bullets and twist rates. I have seen huge velocity differences between two 6mm barrels that were exactly the same bore diameter, but cut with different land to groove ratios. They both shot well but had very different velocities with the same load.

Yep one of the reasons smooth bore cannons started being used. I even saw a variation of that being done in rifles back in the early 90's....didnt work out so well with the ones I saw being tested.

 

[loonie]

In the 1000 yd benchrest game where 6 mm Dashers and BRA's dominate and set a pile of world records, 4 grooves rule. 5R 's for some reason dont shoot as good in that game of pure accuracy at 1000 yards. I like 5R in 7mm but not 6mm.