Rifle Scopes Help on Velocity info i need to spec out a scopes

[shooter308]

I am sending 2 scopes back to leupold to get one repaired and the reticle changed and the other for the M1 knobs installed and them to spec out and calibrate the knobs for my 308. The can go out to 1k but it will be over a turn ( maybe like a complete turn and a half I THINK! )

scope number one that is getting the custom reticle they offer puts mil type dots where ever needed for you caliber gun (which is a 223 rem for me on this scope) They need a the velocity i will be staying around, bullet weight, BC of bullet, average altitude, Average Temp. My particular 223 likes the 69-75 grain bullets so I ill be telling them probably 69 gr bullet.

MY question is do you think i should give me a max load or stick somewhere in the middle VELOCITY WISE with the 223 and tell them the 69 gr Sierra MK or Hornady 68 gr BTHP match since i use different powders?


Scope #2

VX III also i am gettting Leupold M1 turrets ( elevation and windage) for it put on for my 308 win. I plan on shooting out to 100, 200,300, 500- 800 yards with it what velocity do i need to use to stay out that far i have been using RL_15 42 gr and TAC 44 gr with a 168 gr a-max. But i have heard i will need the 178 to help with the wind at the longer differences which isnt a problem cause i dont have many 168s left???

So I need to know what velocity to tell them 2650, 2700, 2850???? to calibrate it for the long shots and what kind of bullet i should give the BC of???

I know this seems like a lot but basically i just need help on two different calibers velocitys so Leupold can calibrate the M1 turrets for long range accuracy on the 223 ( out to 400 yards ) and 308 ( out to 800 yards ). thanks

 

[prplhaz72]

Re: Help on Velocity info i need to spec out a scopes

My opinion if you are looking for true accuracy bdc reticules are not the way to go. Dialing in and a log book will always get you on target easier.

What if you change your load, or have to change components, or change elevation, etc, etc. Or worse off if you had to change all those variable at once. Then you BDC reticle is not up to much anymore. Those always sound great, but never seem to work as good as the claims.

Just my opinion

 

[Outsydlooknin75]

Re: Help on Velocity info i need to spec out a scopes

BDC reticles seem great for shooting factory ammo.

Handloaded stuff can change too much and too easilly I would think.

 

[Red_SC]

Re: Help on Velocity info i need to spec out a scopes

If you're going to have a BDC set up for those scopes, you are going to have to sit down with your rifles and pick a bullet for each. Work up a load, chronograph it, and then stick to that load. THEN, you can get your BDC made. BDC's can be made to work for different bullets and loads- but if you're going to need a cheat sheet anyway you might as well just use a mildot. I'd rather just stay with the TMR anyway, but that's me.

 

[exhogflyer]

Re: Help on Velocity info i need to spec out a scopes

I totally agree with what's been said, calibrated knobs are too inflexible...you're locked in.It's cheaper and more flexible to simply have a "cheat sheet" for your come-ups for ranges/ammo.

 

[shooter308]

Re: Help on Velocity info i need to spec out a scopes

so what you all are syying is get the M1 knobs installed and ditch the calibration Leupold offera??? and maybe just get a etched mildot glass reticle instead of spending the money the other way????

 

[exhogflyer]

Re: Help on Velocity info i need to spec out a scopes

Now you're talkin' !

 

[shooter308]

Re: Help on Velocity info i need to spec out a scopes

well thatll work too then and be a lot cheaper. thanks for the help fellows

 

[LoneWolfUSMC]

Re: Help on Velocity info i need to spec out a scopes

A good mil reticle will be more accurate than a BDC reticle.

BDC reticles are great if you only shoot one load, through one rifle at specific ranges. If your conditions vary a bit your BDC will be off. It could be anything from temp to powder manufacturers changing formulas. Then you will be stuck with a reticle that doesn't match.

If they have a mil turret option, then go with Mil Turrets and TMR reticle and you will be miles ahead of any BDC setup.

 

[shooter308]

Re: Help on Velocity info i need to spec out a scopes

Well which reticle TMR or mildot then? What's the pros and cons of each

 

[LoneWolfUSMC]

Re: Help on Velocity info i need to spec out a scopes

I have been using a GAP for a few months and really like it. It's most like the TMR although Mildots are extremely accurate as well once you confirm an know the reticle.

It will really come down to personal preference. I like having the 1/2 Mil hash marks.