PDA

View Full Version : Question about a scope and base


Prc329
08-16-2007, 9:38 PM
I picked up a Nikon Buckmaster scope with a mildot. It has 50MOA of internal adjustment. I am putting it on a Savage 10FP in 223. I do not plan on shooting this rifle past 600 yards. My question is should I go with a 20 moa base?

PistolPete75
08-16-2007, 9:58 PM
why not. slight overkill, but who cares huh? i did the same with my remmy 700 sps in .223 only had a chance to shoot to 400yards with it. i used a warne base mount, and figured a one piece will hold better than a two piece base. at 600 yards, a 77gr bthp will drop around 102 inches travelling at 2750fps which is about 16moa, so you really don't need it. but again who cares, get the 20moa base.

Prc329
08-16-2007, 10:05 PM
My only concern is 100 yard performance. Will I be to high to get a good 100 yard zero

PistolPete75
08-16-2007, 10:21 PM
i had no issues at all with the ss i bought off you, medium rings, and the warne base. i just put everything together, and bore sighted the old fashion way by taking the bolt out, and looking through the barrel. got on paper the first shot i took. and zeroed in within a few shots. holds really well at 100yards. .223 has no kick to me, and is super easy to shoot and alot of fun to do the 100yard groupings. has great performance for me.

Prc329
08-16-2007, 10:23 PM
I got some 69g SMKs I need to load up for my rifle in preparation for it getting out of gun prison.

PistolPete75
08-16-2007, 10:26 PM
your lucky to shoot the higher grainage bullets. mine can only go to 62gr. i just shoot 55gr sp for now.

Prc329
08-16-2007, 10:33 PM
The savage is a 1-9 twist. It should stabilize 75g. I have some wolf gold 75 grain I am going to try in it. I have shot 77g with some success (read, no keyholes) from a 1-9 as well.

PistolPete75
08-16-2007, 10:37 PM
try out the 69gr hpbt with reduced charges. i know you like to load hot, but it might make the bullet a little speradic

Prc329
08-16-2007, 10:41 PM
I need to look in my sierra manual because I may just go with the "accurate" load and see what happens. I am going to play with the stock barrel and see if I can run the 77s. I may eventually go with a 1-7 barrel on the bad boy.

PistolPete75
08-16-2007, 10:49 PM
.223 bolt is definitely fun, and less expensive to shoot then .308

if you get the 1:7 can you shoot the 90gr hpbt? that'll be sweet for a .223

the bc is crazy high on it, .504

Prc329
08-16-2007, 10:55 PM
That's higher then the 175 SMKs running 2700fps (.496 I believe)

PistolPete75
08-16-2007, 10:57 PM
nevermind, you need a 1:6.5

i just looked it up

rksimple
08-16-2007, 10:59 PM
i had no issues at all with the ss i bought off you, medium rings, and the warne base. i just put everything together, and bore sighted the old fashion way by taking the bolt out, and looking through the barrel. got on paper the first shot i took. and zeroed in within a few shots. holds really well at 100yards. .223 has no kick to me, and is super easy to shoot and alot of fun to do the 100yard groupings. has great performance for me.

But the SS has 100+ MOA internal adjustment. He's worried, and its a valid concern, that with only 25 MOA of up or down adjustment (from center) he won't be able to get a 100 yard zero. Its cutting it close. For 600 yards and under, you won't need a canted base using high BC bullets.

Prc-I have a 12fv in 223 that I shoot 75 grain A-Maxes through. The A Maxes are waaayyy longer than the 77 gr matchking. I push them about 2750-2800 with Varget and they stabilize fine. Remember, its not the weight of the bullet that determines whether or not it will stabilze, but the length and bearing surface. Out of the Savage, they do fine.

PistolPete75
08-16-2007, 11:01 PM
just checked out the 90gr ballistics, and it seems from jbm it's effective range is from 100-300yards. but at least the wind won't effect it too much. it would be a great 100-200yard shooter

PistolPete75
08-16-2007, 11:09 PM
But the SS has 100+ MOA internal adjustment. He's worried, and its a valid concern, that with only 25 MOA of up or down adjustment (from center) he won't be able to get a 100 yard zero. Its cutting it close. For 600 yards and under, you won't need a canted base using high BC bullets.

Prc-I have a 12fv in 223 that I shoot 75 grain A-Maxes through. The A Maxes are waaayyy longer than the 77 gr matchking. I push them about 2750-2800 with Varget and they stabilize fine. Remember, its not the weight of the bullet that determines whether or not it will stabilze, but the length and bearing surface. Out of the Savage, they do fine.

but he has 50moa internal adjustments, shouldn't that be fine? the most he would be adjusting at 600 or less is like 20moa.

rksimple
08-16-2007, 11:29 PM
but he has 50moa internal adjustments, shouldn't that be fine? the most he would be adjusting at 600 or less is like 20moa.

Yep, that means if the scope is centered, he has 25 MOA up and 25MOA down. Put on a 20 MOA base and now he has to dial down 20 MOA to counteract the canted base. That leaves only 5 MOA of adjustment to account for "slop" in everything to get zeroed.

With a zero cant base, he should have plenty to get to 600 yards.

PistolPete75
08-16-2007, 11:41 PM
that is cutting it close. it would sux if he couldn't zero in at 100yrds.

Prc329
08-16-2007, 11:43 PM
I went ahead and bought it anyway. I'll return it if I have problems.

PistolPete75
08-16-2007, 11:48 PM
you can always buy another rifle to put it on!

rksimple
08-16-2007, 11:56 PM
Will you have this scope at the ranch shoot? I've been thinking of that same scope for a precision AR I have. All reviews have been positive...

Prc329
08-17-2007, 12:02 AM
Yeah. I have it right now.

Mute
08-17-2007, 8:27 AM
I don't see a need for the sloped base.

Prc329
08-17-2007, 8:47 AM
I actually called midway this morning and changed it to the 0 moa base.

Fjold
08-17-2007, 9:19 AM
I actually called midway this morning and changed it to the 0 moa base.

Good choice, for 600 yard shooting you don't need the 20 MOA base.

On my 6.5x284 I put a 20 MOA Farrel base and wound up not being able to zero at 100 yards. The gun was shooting over a foot high at 100 yards and I had to buy the Burris Insert Rings with the .020" offsets. The gun now hits 2" high at 100 yards with the scope adjusted 2 clicks off the bottom stop.

I can shoot out to 1,000 yards without getting to the middle of the adjustment range of my scope.

PistolPete75
08-17-2007, 12:34 PM
i guess i am the only one with a .223 that has a 20 moa base. guess the super sniper paid off.

Prc329
08-17-2007, 11:00 PM
looks like you guys were right on the money. According to JBM it should tale me 59.5 clicks to get to 600. Rounding up to 60 we are looking at 15 moa. So assuming I don't need much MOA adjustment to zero I should still have 5 to 10 moa left without the 20 moa base. i don't think 223 will be doing much out to 1000 so I should be good.