Buffalo Bore 10mm Overpressure with FN 510

nighthawkf-117

Lil-Rokslider
Joined
May 27, 2024
Messages
158
Hello everyone!

I didn’t want to have to post this, however I’ve attempted to contact Buffalo Bore about this issue and haven’t received a response via email or phone. That’s pretty unacceptable to me. I understand issues and failures happen but a company needs to be reachable and especially when it comes to something that could be a safety issue.

With that out of the way I wanted to share an overpressure issue I experienced with Buffalo Bore 10mm 220gr outdoorsman hardcast ammunition. I previously had good luck with Buffalo bores 9mm hardcast in my Glock 19 of course for bear defense. I had no issues with accuracy, function, or pressure with those rounds. This year I purchased an FN 510 to carry as a buddy will be using my Glock on an upcoming hunt. I’ve since shot several hundred rounds of blazer 180gr FMJs through it with zero failures. The gun has shot tremendously well for me. The ergonomics of that pistol just seem to work with my technique and I shoot it much better than my Glock despite the higher recoil.

I’m about to head out for a spring bear hunt and finally got around to testing the Buffalo bore in my FN 510. I purchased a box of 20 rounds. I planned to shoot 4 to verify function and carry the rest. Upon shooting the first round I noted a pretty substantial recoil and failure to feed. I cleared that and fired the remaining 3 rounds with no malfunction but still with a much larger recoil than i experienced with the blazer FMJs. I wasn’t too concerned about the recoil as these are a heavier bullet and higher powered charge. However upon inspecting the spend brass I noticed all 4 rounds blew the primers out and deformed the primer pockets, as well as significantly deformed the cases.

Following this I inspected the pistol and found no obvious damage, and then fired 50 rounds of blazer FMJs with no function issues and the same accuracy I was used too. To me these buffalo bore rounds are loaded too hot and clearly show over pressure. Buffalo Bore states “Item 21C is designed for all 10mm pistols that are in ordinary working condition.” On the product page for this ammunition.

Am I correct to be this concerned about this? At the very least I wanted to warn other owners of FN 510s that this could be an issue. Unfortunately as previously stated I have not been able to reach Buffalo bore so I’m not able to get their take on it. Let me know what you think and if you have any suggestions on other hard cast 10mm rounds to try.

Thanks!
 

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Yikes. Trash those. Maybe try underwood. Their coated hard cast is a sweet setup. Was cooler when it was 50 rd boxes but I digress. I threw away half a case of black hills 9mm last month. After shooting half a mag and having 2 cases rupture and them not responding. Glad I was shooting my m9 and not a Glock as it might have rapidly disassembled.
 
Wow, looks like that barrel is a little light on the case support as well. Definitely wouldn't shoot anymore. I'd keep trying to contact BB to at least comp you that box.
 
Wow! I shoot those same loads and have never seen anything like that! Good luck in getting a response.
 
Have you had any issues with other ammo brands?

Buffalo Bore is a company ran/owned by an absolute dipshit, FYI. Customer service and QC will always reflect company principles and values, for which they have none.

Move to Underwood or Grizzly and don't look back.
 
Definitely look significantly over pressure, but out of curiosity, can you pull out your barrel and post a picture of your barrel chamber with a Buffalo Bore round chambered? Like @Samson7x said, the case support looks like it may be making the issue even worse.

Regardless, case support should have little or nothing to do with primers pockets opening to where primers falls out.
 
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