tp555 300 whisper barrels

[SwampF0X]

Hello, I'm thinking of getting one of tp555's 300 whisper barrels. I would like to hear from anyone who has one.

How's accuracy at subsonic speeds?

Special tips and load data? I want to use heavy subsonic projectiles with a suppressor.

thanks,
swampf0x

[oregonshooter]

Can't help now, but give me a few months and I'll be doing exactly that. I decided to build a dedicated subsonic gun and shoot only 240 SMK, but I did get his 3way block for options.

This is a slow forum, but maybe someone will help us both out on the learning curve. :)

[Spook]

I still have one he built for me from a stainless Brux blank I sent him a long time ago....shoots subs very,very nicely.
I dont think anyone has any worries dealing with TP555, the guy knows his stuff.

[rv10flyer]

I have been very pleased with my barrel and 3-way gas block. I’m still working up loads so I don’t know the ultimate accuracy potential but I am happy with the results so far.

His response to emails and questions were always prompt and helpful.

If you order one of his gas blocks I would recommend ordering a gas tube from him as well. The adjustable gas block requires a gas tube a little shorter (5.75” OAL IIRC) than a standard pistol length gas tube. It is a PITA to shorten and bend a pistol length gas tube (at least it was for me and I didn't have the tools to properly flare the end).

[oregonshooter]

and a case guage! I've been very happy with his CS and willingness to answer newb questions. From the name of the company he is a machinist first and gunsmith second. Machinist are by nature perfectionists, gunsmiths not so much.

[SwampF0X]

He said he would assemble my upper for me for a modest $20

Why do I need a case guage? What is a case guage?

swampf0x