J&B Firearm Sales
HighLine Firearms
Oregon Rifleworks
Southwest Firearms
Sporting Systems
Bear Creek Arsenal
JavaScript is disabled
Our website requires JavaScript to function properly. For a better experience, please enable JavaScript in your browser settings before proceeding.

  • Join the #1 community for gun owners of the Northwest

    We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.

    Free Membership Benefits

    • Fewer banner ads
    • Buy, sell, and trade in our classified section
    • Discuss firearms and all aspects of firearm ownership
    • Join others in organizing against anti-gun legislation
    • Find nearby gun shops, ranges, training, and other resources
    • Discover free outdoor shooting areas
    • Stay up to date on firearm-related events
    • Share photos and video with other members
    • ...and much more!

Bolt Weight needed for a direct blowback action

Z

zomie

Boring Oregon
Messages
230
Reactions
353
Interesting article discussing the weight needed for the bolt of a direct blow back action in various calibers:
10mmautocombat.wordpress.com

10mm Blowback Bolt Weight Calculations (Blowback)

Blowback Firearms: Theory & Practice Below: MAC-10/45 Standard Bolt Assembly Below: MAC-10/45 Bolt with Weight for Katana Reproduced from the Website “Orion’s Hammer” “M…
10mmautocombat.wordpress.com 10mmautocombat.wordpress.com

The chart showing such things as 50 bmg needing a 50lb bolt is kind of entertaining.
Read More
 

Similar threads

Bill Campbell
Re-nickle shotgun bolt
Replies
0
Views
84
Bill Campbell
joken
Help, I lost the bolt stop spring on a Remington 721
Replies
5
Views
280
joken
Bill Campbell
Remove Firing Pin on H&R model 121 bolt
Replies
13
Views
442
Bill Campbell
MymuttBear
Need a gunsmith (WA) for rifle work
Replies
0
Views
194
MymuttBear
Cerberus Group
AR Bolt Cleaning
2 3
Replies
46
Views
2K
Cerberus Group
Copeland Custom Gunworks
Bear Creek Arsenal
Cerberus Training Group
Southwest Firearms Forum
Sporting Systems
Tigard Pawn 4 More
Sidebar Menu

New Posts

Upcoming Events

Kids_SAFE_Fdn
Teen Rifle 1 Class
Springfield, OR
Kids_SAFE_Fdn
Kids Firearm Safety 2 Class
Springfield, OR
hayesti
Arms Collectors of Southwest Washington (ACSWW) gun show
Battle Ground, WA
M
Oregon Arms Collectors May 2024 Gun Show
Portland, OR

New Resource Reviews

New Classified Ads

Support Our Community

If our Supporting Vendors don't have what you're looking for, use these links before making a purchase and we will receive a small percentage of the sale
Aero Precision
Amazon
Ballistic Advantage
Brownells
Cabela's
Chewy Pet Supplies
CrossBreed Holsters
eBay
Faxon
Palmetto State Armory
Primary Arms
Sportsman's Guide
Sportsman's Warehouse
Walmart
Back Top