Home Forums Hunting & Shooting Custom Rifles & Wildcats Defiance issue

Trying to swap scopes on my buddy's gun built on Defiance An-Ti. The built in picatinney rail loses timing between rear and front bridge. If you put a rail along side you see the front and rear aren't in time with each other. If you swap a scope from another rifle it won't go on the Defiance. Very aggravating. Anyone else notice this?

It is likely a 20 moa rail on that action, so it is canted to the front. If you swap a scope on that is zeroed on a 0 moa rail you will be off by 20 moa.

Are you referring to an anTi X where the rails are a machined part of the action:

https://defiancemachine.com/actions/anti-x/

..or an anTi with a picatinny rail installed:

https://defiancemachine.com/actions/anti/

I'd guess if it's the anTi-X that they don't time it specifically to spacing of a full rail but to the starting of the front/rear of the action. I've never thought about that before though so I'm guessing.

I just look at it like a two piece pic base except it’s made into it. I use the Burris 2 piece on several guns. I use them because they accept the good rings. I’ve never expected them to match up with ring spacing from another rail on another rifle.

It's built in rail. Picatinney rails are built to an exact standard. I swap scopes pretty much with impunity. Never had an issue. There is a gap in the built in rail on the An-ti. The slots are off by 50 thou or so from front to rear. Would have been super easy to write the code so they maintained the correct pattern. They screwed the pooch on this one.

Yeah, they could probably have machined it to match standard spacing but I'm guessing they had a reason for the spacing they use.

It's pretty easy to loosen one ring, installed the scope with the other fixed, space the loosened one, then tighten the ring back. I do it all the time playing musical scopes between pic rails and the Burris that Kaleb mentioned. I can understand preferring not to need to do that though.

It's too easy just to grab a mounted scope and slide it on. Usually pretty close to zero for me. Looked at the set up. I can't fathom a good reason for allowing the spacing to deviate. Glen has made a lot of actions for me, he knows what he is doing. I just don't think they thought this one out

I'd bet Defiance sells more actions to guys that aren't afraid to buy a scope for them, than to broke-dicks that have to rob them off'n other rifles......grin

OP - just se we are all on the same page, you are speaking of the anti-X; correct?

Ouch ! But likely true.

Dennis knows I'm being sarcastic.....

Yes. The very action you have depicted.

I'm scope poor but sometimes if there's an issue is nice to slide a known scope on and verify. It's also nice to be able to throw a higher mag scope for load work and then put the hunting scope back on it when done. I know it looks like just two separate bases but why wouldn't they time them together.

One of the first actions i bought from him (A Phoenux machine action) he milled the 8-40 base holes with the wrong spacing. The rail he sent wouldnt fit. I called him to get another base that would
He wanted me to send the action back and he would make me one that had standard spacing. I wouldn't do it, figured i waited long enough for this one. I just put the base in the mill and drilled a new hole and counter bore. It's been on there probably 20 years. Simple mistake but not a big deal.

Do you know if the deviant GA hunter is the same?

Hi Dennis,

The anTi-X is based off our Deviant and Ruckus “GA Hunter” version. When I designed it back in 2013, we discussed keeping the rear mount spacing consistent with the front mount, as if it were one piece Mil STD 1913. All the feedback I received was to make sure there were two slots on the rear. With four lengths of actions, soon to be five, and different lengths of loading ports on all, there is no way to keep the slots consistent. The GA configuration is a close second, of all the configurations we offer, and now with the anTi-X it might be the most popular. I estimate we’ve shipped over 8000 total of the three types and this is the first complaint I know of. Having said that, I recently was having an issue with my new anTi-X rifle and took a scope off one of my Deviants and you are correct. I feel your pain.

Thank you for your continued support,
Glen

Isuspect is not an issue with 98% of the guys but i was sure wanting to swap scopes without moving rings.

Thanks for responding, Glen.