I assumed this was common knowledge, whether they admit it or not.

 

There is no feed ramp in an HK type roller gun, so there's nothing to miss.

 

Yes you're correct there is no feedramp, I shouldn't have said that. But do you think its ok for a round to slam into a flat wall and get deformed and marked up? I don't. If I bought ammo that had crushed tips and cuts in it I'd return it, would you not? Aerodynamics are affected by this obviously.

I assumed this was common knowledge, whether they admit it or not.

I've searched all over for threads about it and there's really not much out there about it. If its so common, ptr should have told me from the beginning don't you think? Its been sent back to them multiple times already. Would be nice if someone could tell me if actual HK's do the same? I find it hard to believe such brilliant engineers would decide that deformed bullets should be a feature. If that's the case maybe they aren't as smart as I thought.

 

I’m waiting for hundreds of PTR owners to pop up here claiming their PTR’s do exactly the same thing. My JLD PTR91 has been perfect for many years. GARY.

 

I guess I’m lucky. My PTR 9KT has been flawless. My MKE AP51, which I had huge doubts about… works flawlessly as well.

 

My PTR91 doesn't have that problem. It will shoot match ammo at 1.5 MOA at 100 yards, consistently, and rarely malfunctions.

My new Portuguese CA-3 (produced by PTR) had some issues, but that wasn't one of them. It fed numerous M80 rounds without any issue as well.

What ammo have you been using?

 

New CA-3 owner here, my very recently out of the box rifle has been perfect from the start. Ammo is Winchester 308 white box. A frequently cleaned barrel and some parts lube is my approach, especially during the first 200-300 rounds.

 

I have owned a PTR91 since 2014 and have never encountered this type of issue ? I will say I have had feed problems with non HK mags but never with Steel HK mags 10 or 20 rounders.I feel it even runs better with steel case.
Accuracy is what I expect from a battle rifle.
not as good as maybe an HK but it was not intended to be a sniper rifle.
Do you run all PTR internal parts or a mix ?
Just interested in the knowledge. I have friend that would not throw a dime at clones but with three kids in collage I was pretty lucky I was able to pick up this one.
I will say I have always had feeding issue with my PTR 9c clone even with HK mags and 145 grain ammo. Maybe one day I can afford a HK but there so many other HK's I would rather spend that type of cash on.
And yes including a real G3

 

It's disappointing that there seems to be almost no option other than to buy a pre-ban HK or a custom build if you want a roller delayed gun. If there were decently made guns that were at a decent price point then I would already have a G3K and a 33K.

At least now I know to never risk it on a PTR unless I got one for almost nothing. Thanks for the post!

 

I just did a G3K conversion on a PTR K3P, and have not experienced this problem at all. I've had a few PTR's and it's the nicest and most accurate (sub MOA) yet.

 

This is due to the magwell being out of spec, it's a common issue on almost all PTR's. If the magwell sits too low, or the magazine catch is not at the right height (or something else is off with the geometry inside) it can cause the magazine to sit too low. If you inspect the front of a G3 magazine, both steel and aluminum (though the aluminum design is more obvious and refined) you will see the "ramp" you are looing for. Essentially the front lip of the magazine ramps the cartridge up, though very slightly, into the G3 trunnion/chamber. This can be fixed, either by futzing with the geometry of the magazine catch or by welding and re-maching...yada yada...it's not ideal. I would say the easiest option is to modify the geometry. It's not fun, and it's time consuming, but it can be done.

 

This does explain an issue I've seen on some earlier PTR's, which usually manifested as an intermittent last-round feed issue.

 

Thats too bad. I'm a H&K guy but when the SP5 and K came out at $3,000.00 plus it opened up companys like PTR and MKE who if they held the standard of quality the H&K SP89 had they would have done great.

 

Peep 9 Hole Reviews channel for a video on this exact thing shortly, in a week or so. Yours truly has some thoughts and shows some examples of Poor Trash Rifle parts as well.

 

Peep 9 Hole Reviews channel for a video on this exact thing shortly, in a week or so. Yours truly has some thoughts and shows some examples of Poor Trash Rifle parts as well.

This Nine-Hole Reviews video including the PTR91 (5:00) seems to be pretty positive, with no mention of trash rifle parts -

What's changed?

 

My PTRs have been great ¯\(ツ)/¯

 

When I was researching PTR info Garand Thumb stated in his PTR review video that when they're good they're good, and when they're bad they're bad.. He stated he wouldn't recommend them. He used 3 in his video and I think I recall that he had problems with all three. I know what I went through with mine. Waisted so much money I should have just bought a real HK91. Im glad to hear yours worked for you.

 

Glad to hear this as I am always looking for a deal on one. Now it's back to JDL or nothing.

Brad

 

There is a saying. It goes like this.

Friends don't let Friends PTR.

 

So when I worked at a large firearm company, I asked one of the old R&D Engineers about projectiles being deformed by insertion into the breech, and he said that he’d actually investigated the effects of this phenomenon. His findings were that essentially it was negligible, as the rotational velocity and spin drift had greater effect on accuracy than tip deformation.
What’s more likely the case is their barrels are whack(dimensional issues with leade, throat, bore/groove, and the crown concentricity/perpendicularity). All barrels are not created equal, as all M80 ball ammunition is not created equal. A rebarrel with an RCM barrel or a German 91 barrel pulled from a pre ban, will likely fix your accuracy issues.

 

I'm not defending PTR by any stretch of the imagination but I would love to see the statement they made... at least to understand the context. I cannot imagine a company would actually state "we make em all screwed up... yolo"

 

Never an issue with my g3k or hk 51 ptr clones. Both needed about 2 mags to break in and then awesome. I use lower angle locking pieces to reduce recoil and flow through suppressor but that’s the only change from stock configuration.

If you want to help eliminate issues use 7.62x51 not .308. This is true for HK or PTR. See comparison below.

 

Never an issue with my g3k or hk 51 ptr clones. Both needed about 2 mags to break in and then awesome. I use lower angle locking pieces to reduce recoil and flow through suppressor but that’s the only change from stock configuration.

If you want to help eliminate issues use 7.62x51 not .308. This is true for HK or PTR. See comparison below.

View attachment 487355

What are these cases?

Specs show .308 and 7.62 x 51 case length to be almost identical - or at least not enough difference to be significant.

I did ask the OP what ammo he was using, but haven't got an answer.

 

My PTR91 is from about 2020, and hasn't had any issues.

I thought I had heard that even some JLD PTR91s had issues.

Something about the chambers not being correct, possibly.

 

My PTR91 is from about 2020, and hasn't had any issues.

I thought I had heard that even some JLD PTR91s had issues.

Something about the chambers not being correct, possibly.

They were tight, made for commercial 308, not surplus 7.62. So surplus had troubles. After that they caved, knowing people were going to shoot the cheapest **** ammo they could find vs expensive commercial stuff, they loosened up the chambers a bit to make surplus more reliable.
It's what I seem to remember, anyhow. Remember, back in the day JLD's PTR stood for Precision Target, Rifle.

 

My friend Henry just released a great video talking about his negative experiences with PTR, including gunsmith testimony and plenty of examples.

 

My friend Henry just released a great video talking about his negative experiences with PTR, including gunsmith testimony and plenty of examples.

Which is already linked 7 posts before yours.

But it's good enough to be linked again...

 

Never had a problem with my ptr 91 except for a extractor spring replacement. I've got two hk 91's from 1986 that it functions exactly like. My ptr was made in Connecticut and I do have an hk steel trigger housing and Bill Springfield trigger.

 

Look, I have had three PTRs purchased going back to JLD up to and including their current iterations. No luck. Sold all three. No more non custom clones. The only "clones" that ever worked were built by actual HK gunsmiths using Hk, Malaysian and RCM parts. Anything less and you will be wasting time and money IMO.

 

Got two HK's I bought new in '86 and one PTR 91. Never had a problem with any of them. The PTR has had 4000-5000 rounds through it without an issue. It's the one I shoot most of the time. When I bought my HK's they were 649.00 each from Interarms made by HK in Germany. Now they are ridiculously priced.

 

I don't trust my PTR, had to send it back twice and continue to have issues with it.

PTR Issues (Youtube)

 

If PTR couldn't figure that issue out they truly are lost. That's not to say it should never have left the factory like that to start with.

 

Never an issue with my g3k or hk 51 ptr clones. Both needed about 2 mags to break in and then awesome. I use lower angle locking pieces to reduce recoil and flow through suppressor but that’s the only change from stock configuration.

If you want to help eliminate issues use 7.62x51 not .308. This is true for HK or PTR. See comparison below.
View attachment 487356
View attachment 487355

Yep, .308 in your top pic and 7.62 NATO in your bottom pic. Shoulder of the .308 case is just floating around in there when it goes off. Hence, no flute marks on the shoulder of the .308. Also why 7.62 chambered DRB's break .308 cases in half.

This explains why you shouldn't shoot .308 win in a DRB Hk Platform. Its not just the nuisance of maybe broken cases but it's also the bolt head impacting the breech of the barrel, which eventually will reduce gap measurements on an empty chamber, faster than shooting a diet of 7.62 NATO.

It's disappointing that there seems to be almost no option other than to buy a pre-ban HK or a custom build if you want a roller delayed gun. If there were decently made guns that were at a decent price point then I would already have a G3K and a 33K.

At least now I know to never risk it on a PTR unless I got one for almost nothing. Thanks for the post!

I've had a chance over the past few months to take a close look at five of the MKE built 91 clones now... I'm pretty impressed so far with how close everything is to being in spec. Almost as good as I build, but a hell of a lot cheaper. I won't build one that cheap. But I also don't live in Turkey. I still haven't had a chance to check any of them out after any significant round counts, so the jury is still out for me on metallurgy of the parts.