Defiance XL Bolt Knob Mods

[rijndael]

I really like the Defiance XL bolt knobs, specifically the knurling on the XL Tactical. The problem is they're hollow, and as a result - too light. It changes the feel of cycling the bolt. The hollow one weighs 32 grams and the regular XL knob is 82 grams.






I opted to fill mine with lead and then cap it off with some JB. I used JB so I wasn't always touching lead.



(Yes, I have two of them ... I'm testing out the process on the 1st one). This is the JB capped one next to the regular one.



I'll hit it with some paint when it's all dry. It's not as fancy nor as elegant as some of you would probably do, but it'll do just fine for me, and it saved me some money. I was just hoping to give some others an idea if they were in the same situation. The modified one weighs 94 grams.

Pre paint:

 

[nmkid]

If it would fit, I would've been tempted to cut the base of a case and JB welded to the bolt.

 

[rijndael]

The hole is about .647", so you'd probably want some ELR type cartridge.

The 375 EnABLER, it has a .6398" case head, according to this:

The 375 & 338 EnABELR Cartridges - Applied Ballistics

appliedballisticsllc.com

There are probably parent cases that fit too.

 

[clowdis]

Whew! For a minute there I thought you were going to use JB bore cleaning compound!