Ideal scope parameters for field competition shooting?

Dobermann

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May 28, 2020
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Given the increasing interest in 'field'-type competitions, what does this mean for rifle scope choices?

Does it change anything from so-called 'tactical benchrest' shooting? If so, how?

I was interested to hear Jacob's recommendation for rifle and scope choice for Assassin's Way, for example: he suggested a hunting-weight rifle, with a 'good scope' ... but what would be a 'good scope' for that kind of event?

While there are a range of 'field' events, with different rules, courses of fire, and so on, let's assume:
  • You'll be carrying your gear for at least a day in a backpack
  • You need to find, range, and engage targets / targets are unknown distances
  • You're competing solo, rather than with a partner or team, so you need to both find your own targets and spot your own shots.
In this context, what are the parameters for an 'ideal' scope, as you see it?

For example:

Mag range: What mag range are you running - more (for target ID, perhaps), or less (so you might get a smaller overall weight/size package)? What max mag range would be necessary? Is 30 too much? Would 18 be too little?

Weight: What would be your maximum weight? Is weight an issue, as you're carrying all your gear? Or not, as the scope is primary to success, and you'd cut weight elsewhere? Or merely relevant in the context of having to 'make weight' for a stated rifle + scope combination?

Does weightt become relevant in the context of balancing a rifle, especially if there won't be 'variations on a barricade' props - for example, is weight relevant to you, in terms of balance, if you are using a tripod? And, while Frank has said tripods are part of what we do now ... what about for those who don't? Is actively using the scope's weight for aiding balance (as opposed to, say, messing with weights in a chassis) a consideration for you? Why/why not?

Reticle: Are you wanting some kind of ranging reticle? If so, why (assuming you're also using a rangefinder/RF binos)? Or would you want it given there's talk of some events disallowing laser rangefinders on some stages (if not altogether)? And what kind of rangefinding reticle - one that simply has a separate 'ruler' (think Nightforce's MIL-R as one example), or one that is more designed for 'dynamic' ranging (such as the ZCO MPCT 3)? Why? And is a 'tree' going to help or hinder for these kinds of events? Why?

Size: Is 30 vs 34 mm tube size an issue here? Why or why not? What about objective lens size? Do we really need 56 mm for more light and FOV, or would 44 mm be enough to get the job done well, and have some size and weight benefits?


In discussing the above, I'm hoping to avoid simple answers of the 'just get a brand/model' suggestion ... I'm more interested in the different design elements, and what you see is more beneficial in field events rather than PRS-style events.

If you do want to discuss brands and models, perhaps it's worth also then providing a comparison from the same maker, and discussing why you'd go one over the other ... three quick examples that give concrete choices for the above, at different price points, would be:

  • ZCO: 5-27 x 63 mm (37.9 oz / 1075 g) or 4-20 x 57 (34.8 oz / 986 g)
  • Nightforce ATACR: 5-25 x 56 (37.6 oz/1066 g), 4-20 x 50 (35.2 oz/998 g), or 4-16 x 42 (30.0 oz/850 g)
  • Bushnell: XRS 4.5-30 x 50 (37.8 oz /1070 g) or LRTS 4.5-18 x 44 (27.3oz /774 g)

[I've also chosen these three as reliability is paramount for me, and this comes with a certain weight penalty ... so, for this kind of event, I personally wouldn't be interested in running some kind of 'ultralight' that may then be more prone to mechanical failure.]

For each of the above, does the increase in mag range and FOV make up for the increase in weight, especially knowing you're lugging all your gear around all day?

Overall, does field shooting lean more on the side of larger mag, better FOV, and light gathering, or smaller size, less weight, but less mag?

What says the Hide Mind?
 
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In my mind and from my experience the scope choices seems to be pretty much the same for "tactical benchrest" and fieldshooting. I would think that some preference changes might be seen in the choice of reticles.

I have been taking part in fieldshooting competitions since 2015 and have used and tried out a few different scopes and rifles since. I have also taken part in some smaller PRS style local matches.
I have found that my absolute favourite reticle for fieldshooting is the MSR. It is absolutely amazing for this. I have used a Schmidt 5-25x56 PM2 with MSR and currently run a Kahles k624i with the MSRk reticle and it is awesome. The fine lined scales in the lower left part of the reticle is a great tool to have when you range targets at unknown distance.
I can get by with less, and have made decent enough results with a regular Mil-Dot reticle but the MSR does everything better, a lot better in fact. Sometimes I have been down to +/- 1m of the actual distance to target. That rocks.

I could probably get by with a lower magnification, 4-16x and up is more than enough. I almost never go above 20x with my scopes no matter which one I have used.

For a dedicated tactical benchrest rifle I guess that a reticle with a tree is better. For stages that demand you to use hold overs and stages with a time crunch. I have stayed away from tree-type reticles as I have never felt the need for them.

As for the weight, when tactical benchrest type rifles seems to get heavier by the day and using small light recoiling rounds like 6br. It is definetely not a set up I would want to lug around on a fieldshooting type event where you walk +20km with all the gear.
My Sako TRG22 is heavy enough as it is at around 16lb. But some tactical benchrest guys bolt as much and more weight to their allready heavy rifles. Its not for me and its clearly two different types of shooting. Tripods are not too common in fieldshooting in Sweden, yet anyways.

Pretty much all mid to top end scopes will be good enough to use. Its all the small stuff that we value and stress as individuals that pushes us to get different set ups. I would not be held back with a 50mm front lens and 16x magnification as long as I have about 13MIL on tap and a good zero-stop to keep me from messing up.
 
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I'll say this.
It's a good set of questions.

But for even a partial response you're asking for someone to devote a decent amount of time to answer.
For a complete response, a respondent might as well reword your questions into an abstract and follow with a dissertation on the topic.

I'm tempted to respond with my opinions on your questions but I really just don't have the time with work and social life. Especially this time of year.

Cheers