Anybody have any luck with this? How much more velocity are you picking up? Any thoughts?
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+P Throating
- Thread starter chetraguse
- Start date
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A method of chambering used by Defensive Edge
Idahoallen
Active Member
- Joined
- Nov 8, 2015
- Messages
- 35
I think Weatherby was one of the first to try it back in his day. I just had Shawn build a +p.... I like it fast!
Hawkeye Pierce
Well-Known Member
I did the 260 terminator with it and with 139 scenar i was over 3k fps easy.
Just make sure you want it to be that chamber forever because you can't change it. The remer bushing will bounce around because material is missing.
Learned that when I tried to bump it up to 6.5 wsm.
Just make sure you want it to be that chamber forever because you can't change it. The remer bushing will bounce around because material is missing.
Learned that when I tried to bump it up to 6.5 wsm.
Nomosendero
Well-Known Member
I would like to see all the pros and cons of +P throating, the good and the bad.
I wonder about barrel life.
I wonder about barrel life.
That's kind of what I'm looking for also
gillettehunter
Well-Known Member
Go over to Long range only. Do a search and you'll find some info there.
Bruce
Bruce
jasent
Well-Known Member
Yeah I've seen that video. I'm just curious on how people like it after they have done it.
I love it on my 300 PRC, I think I've gained 100fps pretty easy. On my 6.5PRC I can't seem to see much gain.
RUFFIAN R - NY
Well-Known Member
back in the 60's when I built my 25-06 AI and 6mm-06 AI , Parker A had the throat opened some on these two guns and I gained apx 135-165 FPS between the two and now it's called +P great to know that !!!!!!
Danehunter
Well-Known Member
A similar thing happens with HBN (Hexagonal Boron Nitride) powder coated bullets. Bullets tumbled in HBN need MORE powder to get the same velocity as un coated bullets because they are so slippery. (yeah, counterintuitive, I know.)
But from a cold bore they give you the SAME point of impact as the rest of your shots! David Tubb sells both the powder and HBN coated bullets should you just want to they them without buying a tumbler and the HBN powder.
I suggest this approach with a "regular" chamber to get more accuracy and proven longer barrel life.
No, this is nothing like "Moly" coating. It is far superior for several reasons. Go to Tubb's site and read why.
But from a cold bore they give you the SAME point of impact as the rest of your shots! David Tubb sells both the powder and HBN coated bullets should you just want to they them without buying a tumbler and the HBN powder.
I suggest this approach with a "regular" chamber to get more accuracy and proven longer barrel life.
No, this is nothing like "Moly" coating. It is far superior for several reasons. Go to Tubb's site and read why.
Nomosendero
Well-Known Member
I watched the video. I saw it is not the same as freebore at all. I just wonder if that area of the rifling that is just a little smaller, maybe not but then again with your increase in powder to gain more velocity would mean a hotter burn, like moving up to a slightly hotter cartridge which should mean less barrel life, but maybe not enough to matter.
